Gallagher Bassett Corporate Office and Rolling Meadows Headquarters 

Gallagher Bassett corporate office and global headquarters are located in Rolling Meadows, Illinois. Gallagher Bassett Services, Inc. is a claims and risk-management company within Arthur J. Gallagher & Co. It administers workers’ compensation, liability, property, and other commercial claims for employers, self-insured organizations, public entities, captives, and insurance carriers. This page provides current headquarters information, corporate and claimant phone numbers, claim-address guidance, company leadership, provider information, and complaint-escalation resources.

Gallagher Bassett Corporate Office and Headquarters

• Legal company: Gallagher Bassett Services, Inc.
• Parent company: Arthur J. Gallagher & Co.
• Gallagher Bassett headquarters address: 2850 Golf Road, Rolling Meadows, IL 60008-4050
• Gallagher Bassett corporate phone number: 1-630-773-3800
• Existing-claim assistance: 1-833-707-6338
• Published claimant-support hours: 7:00 a.m.–7:00 p.m. Central Time
• Official website: GallagherBassett.com
• Parent-company stock symbol: NYSE: AJG

The Rolling Meadows office is Gallagher Bassett’s current headquarters and is also the principal executive-office address of Arthur J. Gallagher & Co. The campus supports corporate leadership, claims management, finance, technology, legal, compliance, human resources, client service, and other business functions.

The headquarters is not a public claims counter, medical-bill drop-off location, workers’ compensation clinic, insurance agency, provider-payment window, equipment-return center, or walk-in complaint office.

Do not mail claim documents, medical bills, reimbursement requests, settlement papers, wage records, legal notices, or protected health information to headquarters unless Gallagher Bassett or another authorized party provides written instructions using that address for the specific claim.

Gallagher Bassett Headquarters Address Update

Gallagher Bassett’s current headquarters address is:

Gallagher Bassett Services, Inc.
2850 Golf Road
Rolling Meadows, IL 60008-4050

Some Gallagher Bassett communications display the street as 2850 East Golf Road. This refers to the same Rolling Meadows corporate campus.

Older directories may continue to identify 1411 Opus Place in Downers Grove as the company’s headquarters. That address remains associated with certain Gallagher Bassett Technical Services, regulatory, branch, and program records, but it is not the company’s current global headquarters.

What is located at 1411 Opus Place?

Gallagher Bassett operating or Technical Services location
1411 Opus Place, Suite 400
Downers Grove, IL 60515

The Downers Grove address may remain valid for a particular technical-services engagement, workers’ compensation program, employer account, regulatory record, or claim instruction.

Its appearance on one claim form, workers’ compensation notice, or professional record does not make it the correct address for every Gallagher Bassett claim. Confirm the destination shown on the current claim correspondence before mailing anything.

Gallagher Bassett Corporate Phone Versus Claimant Support

The corporate and administrative number is 1-630-773-3800. This line is associated with the Rolling Meadows headquarters and Arthur J. Gallagher & Co.

It should not be treated as the first contact for:

• An existing workers’ compensation claim
• A medical treatment authorization
• A missing disability or wage-replacement payment
• A mileage or medical-expense reimbursement
• A provider bill
• A liability or automobile claim
• A settlement payment
• A claim denial or benefit dispute
• A pharmacy card
• A claim-specific mailing address

For an existing claim, Gallagher Bassett publishes:

• Claimant-support number: 1-833-707-6338
• Published hours: 7:00 a.m.–7:00 p.m. Central Time
• Claimant inquiry form: Contact Gallagher Bassett about a claim
• Mobile claim access: GBGO mygbclaim app for supported claims

Have the claim or loss number and date of injury or loss available. The assigned Resolution Manager’s direct telephone number and email may be the fastest route for a claim-specific question.

Is Gallagher Bassett an Insurance Company?

Gallagher Bassett is primarily a third-party claims administrator and risk-management provider. It commonly administers claims for:

• Insurance carriers
• Self-insured employers
• Public entities
• Captive insurance programs
• Commercial businesses
• Nonprofit organizations
• Managing general agents and underwriters

Gallagher Bassett may investigate a claim, communicate with the parties, arrange medical management, review bills, issue payments, negotiate resolution, and perform other administrative work. It is not necessarily the insurance carrier underwriting the risk or the organization ultimately funding the benefits.

The employer, insurer, self-insured organization, public entity, or other client may retain decision-making authority under the applicable policy, contract, law, or claims program.

Gallagher Bassett Claims Address and Mailing Address

There is no single Gallagher Bassett claims mailing address that is correct for every claimant, employer, attorney, or medical provider.

The correct address can vary according to:

• The employer or insured organization
• The insurance carrier or self-insured client
• The claim type
• The state where the injury or loss occurred
• The assigned Gallagher Bassett branch
• The Resolution Manager
• The medical-bill review system
• The applicable workers’ compensation program
• The client’s electronic-document process

Use the mailing, email, fax, portal, or electronic-billing instructions shown on:

• The Gallagher Bassett claim-acknowledgment letter
• The assigned Resolution Manager’s correspondence
• The medical or pharmacy card
• An explanation of review or remittance advice
• A benefit or payment notice
• An employer’s workers’ compensation instructions
• A denial, authorization, or settlement document
• The applicable client or provider portal

When no address is available, call 1-833-707-6338 or use the official claimant form and request the correct destination for the specific claim.

Do not copy an address from an unrelated employer’s workers’ compensation poster or another claimant’s document.

Gallagher Bassett Corporate Mailing Address

The general corporate headquarters address is:

Gallagher Bassett Services, Inc.
2850 Golf Road
Rolling Meadows, IL 60008-4050

This is a corporate and administrative address. It should not be used as a substitute for a claim-specific mailing address.

Before sending corporate correspondence, confirm that the Rolling Meadows office is the appropriate recipient. Certain contracts, subpoenas, formal notices, regulatory matters, and legal-service requirements may specify a different entity, registered agent, branch, or method of delivery.

How to Contact Gallagher Bassett About an Existing Claim

For an existing claim, gather:

• Claim or loss number
• Date of injury or loss
• Employer or insured organization
• Claimant’s name
• Assigned Resolution Manager
• Type of claim
• State where the event occurred
• Latest letter or payment notice
• Specific question or requested action

1. Contact the assigned Resolution Manager using the latest claim correspondence.
2. Review the GBGO mygbclaim app when the claim is supported by the system.
3. Call 1-833-707-6338.
4. Use the official claimant inquiry form when telephone help is unavailable.
5. Request a reference number or written confirmation.
6. Keep copies of documents submitted and note the date and method of delivery.

Do not submit multiple copies of sensitive documents to unrelated email addresses or offices. Ask which secure method is authorized for the claim.

How to Report a New Claim

The correct procedure for reporting a new claim depends on the employer, policyholder, carrier, public entity, or self-insured program that hired Gallagher Bassett.

Workplace injury

An injured employee should generally notify the employer or supervisor promptly and follow the employer’s workers’ compensation reporting procedure.

Automobile or general-liability incident

Report the event to the business, property owner, vehicle operator, insurer, rental company, public entity, or other organization involved. That organization may then provide Gallagher Bassett’s claim-reporting instructions.

Client or policyholder

Employers and insured organizations should use the first-report system, hotline, email, portal, or reporting procedure provided in their Gallagher Bassett service agreement.

The general corporate switchboard should not be relied upon as the universal first-report-of-loss line.

Gallagher Bassett Workers’ Compensation Claims

Gallagher Bassett administers workers’ compensation claims for many employers, insurance carriers, self-insured organizations, and public entities.

After a workplace injury:

1. Obtain emergency assistance when needed.
2. Notify the employer promptly.
3. Complete the required workplace-injury report.
4. Obtain the Gallagher Bassett claim number.
5. Ask whether treatment must use an authorized provider or medical network.
6. Keep work-status notes, medical records, receipts, and mileage records.
7. Confirm the assigned Resolution Manager.
8. Report changes in work status, address, telephone number, and treatment.
9. Review every benefit, denial, and authorization notice promptly.

Workers’ compensation laws, benefit amounts, treatment rights, filing deadlines, provider rules, and appeal procedures differ by state.

Do not rely on a general website article as a substitute for the official state notice, employer instructions, legal advice, or the applicable workers’ compensation agency.

Gallagher Bassett Medical Treatment and Authorizations

Before scheduling non-emergency treatment, confirm:

• Whether the claim is accepted or under investigation
• Whether prior authorization is required
• Whether an approved provider or network must be used
• The authorized body part or condition
• The claim number and payer information
• The process for prescriptions and medical equipment
• The contact for a denied or delayed authorization

Emergency medical needs should be handled through emergency services or an appropriate medical facility rather than waiting for the corporate office or Resolution Manager to respond.

A treatment delay or authorization dispute may also be subject to a state workers’ compensation process. Preserve the written request, medical recommendation, denial, and dates of contact.

Gallagher Bassett Provider Phone Number and Medical Billing

No single current public provider-support number was verified for every Gallagher Bassett account.

A medical provider should use the contact information shown on:

• The treatment authorization
• The claimant’s medical or pharmacy card
• The explanation of review
• The remittance advice
• The electronic-billing payer record
• The assigned Resolution Manager’s correspondence
• The employer or carrier’s provider instructions

Before submitting a bill, confirm:

• Correct legal payer
• Employer or insured organization
• Claim number
• Date of injury
• Patient and claimant information
• Authorization requirements
• Electronic or paper billing format
• Correct mailing address or payer ID
• Required medical records
• Applicable state fee schedule

A provider calling the general claimant line should be prepared to identify the claim so the inquiry can be routed. The number should not be represented as a guaranteed provider-payment department.

Disputed, Reduced, or Unpaid Medical Bills

When a medical bill is reduced, denied, returned, or unpaid:

1. Review the explanation of review or remittance advice.
2. Confirm that the claim number and payer were correct.
3. Check whether authorization or supporting records were missing.
4. Identify the adjustment, denial, or fee-schedule reason.
5. Contact the bill-review or Resolution Manager contact shown on the notice.
6. Submit a corrected bill, reconsideration, or appeal within the applicable deadline.
7. Use the state workers’ compensation medical-fee dispute process when appropriate.

Do not send an entire patient chart or protected health information to the corporate address unless the claim-specific instructions authorize that delivery method.

Wage-Replacement and Disability-Payment Problems

A worker questioning a delayed, missing, reduced, or stopped payment should gather:

• Claim number
• Benefit notice
• Recent work-status note
• Wage records
• Payment history
• Dates of disability
• Return-to-work offer or restrictions
• Any suspension, termination, or denial notice

Ask the Resolution Manager:

• What benefit period was calculated
• What wage information was used
• Whether a payment was issued
• Whether additional medical documentation is required
• Why the benefit changed or stopped
• What review or appeal procedure applies

Workers’ compensation benefit disputes may have short filing deadlines. Contact the applicable state agency or a qualified attorney when formal rights or deadlines are involved.

Gallagher Bassett Automobile and Liability Claims

Gallagher Bassett also administers automobile, premises, product, general-liability, and other commercial claims.

For an existing liability claim, keep:

• Claim number
• Incident date and location
• Police or incident report
• Photographs and video
• Witness information
• Repair estimates
• Rental or transportation records
• Medical bills and treatment records
• Lost-income documentation
• Prior correspondence

Submit documents only through the method authorized by the assigned Resolution Manager. Do not post medical records, photographs of identification, license plates, witness details, or settlement communications publicly.

Claim Decisions, Settlements, and Payments

Gallagher Bassett may administer and negotiate claims under authority provided by its client. The employer, insurer, self-insured organization, public entity, captive, or other client may retain authority over coverage, reserves, settlement, litigation, and payments.

For a proposed settlement:

• Request the terms in writing.
• Identify which claims and benefits would be released.
• Ask whether liens, medical bills, attorney fees, or future treatment are included.
• Confirm who is funding the settlement.
• Review payment timing and required approvals.
• Do not sign a release that you do not understand.

CorporateOfficeHeadquarters.com cannot evaluate whether an offer is fair or interpret a settlement agreement. Formal settlement questions may require qualified legal advice.

How to Escalate a Gallagher Bassett Claim Complaint

1. Contact the Resolution Manager: State the claim number, issue, relevant dates, and requested resolution.
2. Request supervisory review: Ask for the team leader, branch manager, or claims supervisor when the matter remains unresolved.
3. Contact claimant support: Call 1-833-707-6338 or use the claimant inquiry form.
4. Notify the responsible client: Contact the employer, insurer, self-insured organization, public entity, risk manager, or broker that engaged Gallagher Bassett.
5. Submit a written timeline: Include prior contacts, documents, and the requested action without sending unnecessary sensitive information.
6. Preserve deadlines: A complaint to a supervisor does not necessarily extend a workers’ compensation, appeal, lawsuit, or regulatory deadline.
7. Use the applicable outside process: Contact the state workers’ compensation agency, insurance department, ombudsman, court, or other authority when it has jurisdiction.
8. Contact headquarters only when appropriate: The corporate number is 1-630-773-3800, but headquarters may refer the issue to the assigned claim team or client.

Outside Complaint and Regulatory Options

The appropriate outside route depends on the type of claim and the organization responsible for the program.

• Workers’ compensation: State workers’ compensation commission, board, division, ombudsman, or adjudication system
• Insurance-carrier complaint: Applicable state department of insurance
• Self-insured employer: State self-insurance or workers’ compensation authority
• Public-entity claim: Applicable government claim and appeal process
• Medical-bill dispute: State fee-review, reconsideration, arbitration, or administrative process
• Discrimination or employment concern: Appropriate employer channel or government agency
• Immediate fraud or crime: Appropriate law-enforcement or regulatory authority

Not every insurance department regulates every self-insured employer, public entity, or workers’ compensation decision. Confirm jurisdiction before filing.

Privacy and Personal-Information Requests

Gallagher’s current privacy contacts include:

• Privacy email: Gl*****************@*jg.com
• U.S. privacy-request phone number: 1-833-208-9359
• Privacy notice: Gallagher Bassett Global Privacy Notice
• Privacy Rights Request Form: Submit a privacy request

Gallagher Bassett may process claim information on behalf of an employer, carrier, self-insured entity, or another client. Depending on the applicable law and relationship, a privacy request may be forwarded to that client or the requester may be instructed to contact it directly.

The Privacy Office is not a substitute for the assigned Resolution Manager and does not determine benefit eligibility, authorize treatment, issue settlements, or process medical bills.

Gallagher Bassett Locations

Gallagher Bassett is headquartered in Rolling Meadows and operates through a network of offices in the United States and internationally.

A branch address may serve:

• A particular geographic region
• A client account
• Workers’ compensation operations
• Liability or property claims
• Technical and environmental services
• Medical-management services
• Specialty claims
• Administrative or regulatory functions

Use the official Gallagher Bassett contact form when trying to identify an office for a business inquiry.

For an existing claim, use the office or address identified in the claim correspondence instead of selecting a nearby Gallagher Bassett office based only on location.

Gallagher Bassett Ownership and Corporate Structure

Gallagher Bassett Services, Inc. is a wholly owned subsidiary of Arthur J. Gallagher & Co. and forms the principal business within Gallagher’s risk-management segment.

Arthur J. Gallagher & Co. is a publicly traded insurance brokerage, consulting, and risk-management company listed on the New York Stock Exchange under AJG.

Gallagher Bassett does not have a separate public stock listing.

The parent company’s brokerage operation and Gallagher Bassett’s claims-administration operation perform different functions:

• Gallagher brokerage: Insurance placement, brokerage, consulting, and related client services
• Gallagher Bassett: Third-party claims administration, risk control, clinical services, technical services, and related claim solutions

Gallagher Bassett Leadership

• Scott Hudson: Global President and Chief Executive Officer
• Russ Pass: Chief Operating Officer
• Patricia McCall: Chief Financial Officer
• Liz Staruck: Executive Vice President and General Counsel
• Irina Simpson: Executive Vice President, Workers’ Compensation
• Chenoa Daley: Group Vice President, Human Resources
• Joe Powell: Chief Digital Officer
• J. Patrick Gallagher Jr.: Chairman and Chief Executive Officer, Arthur J. Gallagher & Co.
• Thomas J. Gallagher: President, Arthur J. Gallagher & Co.

Executive roles can change. Review the official Gallagher Bassett leadership page and Arthur J. Gallagher executive page for current information.

Gallagher Bassett Careers and Human Resources

Gallagher Bassett does not publish the corporate number as a dedicated general Human Resources line.

• Careers website: Gallagher Bassett careers
• Careers email: Ca*****@*jg.com

Applicants should apply through the official job listing and follow the contact instructions associated with the position.

Current employees should use their manager, Human Resources, payroll, benefits, leave, employee-relations, ethics, safety, or other established internal systems.

Do not publish Social Security numbers, employee IDs, wage records, tax forms, medical information, claim information, background checks, private manager details, or confidential workplace documents.

Gallagher Bassett Reader Reviews and Complaints

No reader reviews are currently visible on this CorporateOfficeHeadquarters.com page.

Future reviews should distinguish among:

• Gallagher Bassett corporate headquarters
• The assigned Resolution Manager
• A local claims branch
• The employer or self-insured organization
• The insurance carrier
• A medical provider or bill-review company
• A pharmacy or medical network
• A workers’ compensation agency
• A Gallagher Bassett Technical Services engagement

A complaint involving one claim, adjuster, employer, insurer, or branch should not be presented as proof that every Gallagher Bassett claim has the same outcome.

Gallagher Bassett Competitors and Related Risk Companies

More direct competitors in third-party claims administration and managed claims services include Sedgwick, Crawford, CorVel, Broadspire, and other commercial claims administrators.

Consumers and business clients researching broader insurance brokerage, consulting, and risk-advisory companies may also review:

• Aon corporate office

Aon is a broader insurance brokerage and risk-advisory company and is not an exact operational equivalent to Gallagher Bassett’s claims-administration business.

Allstate, State Farm, and GEICO are primarily insurance carriers and should not be treated as direct equivalents to a third-party claims administrator.

Readers trying to identify the insurance carrier responsible for a policy or claim may also use the Insurance Company Corporate Offices and Phone Numbers directory.

Official Gallagher Bassett and Gallagher Resources

• Official Gallagher Bassett website
• About Gallagher Bassett
• Gallagher Bassett leadership
• Information and contact form for claimants
• Gallagher Bassett business contact form
• Claims-management services
• Workers’ compensation claims management
• Global Privacy Notice
• Gallagher Bassett careers
• Arthur J. Gallagher & Co.
• Arthur J. Gallagher Investor Relations
• Gallagher parent-company leadership

Frequently Asked Questions

Where is Gallagher Bassett headquarters?

Gallagher Bassett is headquartered at 2850 Golf Road, Rolling Meadows, IL 60008-4050.

What is the Gallagher Bassett corporate-office phone number?

The corporate and administrative phone number is 1-630-773-3800.

Is 1411 Opus Place Gallagher Bassett headquarters?

No. Gallagher Bassett’s current headquarters is in Rolling Meadows. The 1411 Opus Place address in Downers Grove remains associated with certain Technical Services, branch, regulatory, and claim-program functions.

What is Gallagher Bassett’s mailing address?

The general corporate mailing address is 2850 Golf Road, Rolling Meadows, IL 60008-4050. Claim documents should use the claim-specific mailing or electronic address supplied by the Resolution Manager or program.

What is Gallagher Bassett’s claims address?

There is no single address for every Gallagher Bassett claim. Use the address shown on the current claim letter, medical card, remittance advice, benefit notice, or Resolution Manager’s correspondence.

What is Gallagher Bassett’s workers’ compensation address?

The correct workers’ compensation address depends on the employer, carrier, state, branch, and claim program. Do not automatically use the headquarters or Downers Grove office without claim-specific instructions.

What is the Gallagher Bassett claimant phone number?

Gallagher Bassett publishes 1-833-707-6338 for existing-claim assistance from 7:00 a.m. to 7:00 p.m. Central Time.

What is the Gallagher Bassett provider phone number?

No universal public provider line was verified. Providers should use the contact on the authorization, explanation of review, remittance advice, payer record, or claim correspondence. The claimant-support line may help route a claim-specific inquiry.

Where should a provider mail a medical bill?

Use the payer ID, electronic-billing route, or mailing address supplied for the specific employer, carrier, and claim. Do not send medical bills to headquarters unless the claim instructions expressly require it.

Is Gallagher Bassett the insurance company?

Gallagher Bassett is usually the third-party administrator handling the claim for an employer, self-insured organization, public entity, captive, or insurance carrier. The actual insurer or funding organization may be another company.

Who owns Gallagher Bassett?

Gallagher Bassett Services, Inc. is a wholly owned subsidiary of Arthur J. Gallagher & Co.

Is Gallagher Bassett publicly traded?

Gallagher Bassett does not have a separate public stock listing. Parent company Arthur J. Gallagher & Co. trades on the New York Stock Exchange under AJG.

Who is the CEO of Gallagher Bassett?

Scott Hudson is Gallagher Bassett’s global president and chief executive officer.

Who is the CEO of Arthur J. Gallagher?

J. Patrick Gallagher Jr. is chairman and chief executive officer of Arthur J. Gallagher & Co.

How do I contact my Gallagher Bassett adjuster?

Use the direct telephone number or email in the latest claim correspondence or the GBGO mygbclaim app. Claimants may also call 1-833-707-6338.

How do I complain about a Gallagher Bassett adjuster?

Contact the Resolution Manager first, request a supervisor or branch manager, use the claimant-support line, and notify the employer, carrier, or organization that hired Gallagher Bassett. Preserve any state appeal or complaint deadline.

Can I mail claim paperwork to Gallagher Bassett headquarters?

Only when written claim instructions specifically direct it there. Use the claim-specific address, email, fax, portal, or Resolution Manager contact whenever possible.

Can I visit Gallagher Bassett headquarters about a claim?

No public source reviewed identifies the Rolling Meadows office as a walk-in claims or complaint center. Use the assigned claim team and official claimant-support process.

What is Gallagher Bassett’s email address?

Gallagher Bassett does not publish one universal claim email. Use the assigned Resolution Manager, official claimant form, or claim-specific email. Privacy questions may be sent to Gl*****************@*jg.com.

What is Gallagher Bassett’s HR phone number?

No public general HR telephone number was verified. Applicants should use the official careers site and current employees should use internal Human Resources channels.

Why Trust CorporateOfficeHeadquarters.com?

CorporateOfficeHeadquarters.com reviewed Gallagher Bassett’s official headquarters statement, current Rolling Meadows corporate address, Arthur J. Gallagher’s 2025 annual report and 2026 filing information, corporate telephone number, parent-company structure, current claimant-support number and hours, claimant inquiry system, GBGO mygbclaim information, claims-management services, workers’ compensation resources, leadership, privacy contacts, careers information, current Downers Grove records, QueryHunter search data, existing image, internal risk and insurance resources, and the live review section.

We distinguish Gallagher Bassett’s corporate headquarters from the Downers Grove Technical Services and branch location, claim-specific mailing addresses, Resolution Managers, medical-bill review, insurance carriers, self-insured employers, public entities, providers, workers’ compensation agencies, and Arthur J. Gallagher’s brokerage business.

CorporateOfficeHeadquarters.com is independent and is not affiliated with Gallagher Bassett Services, Arthur J. Gallagher & Co., any Gallagher office, employer, self-insured organization, insurance carrier, captive, public entity, Resolution Manager, medical provider, pharmacy, bill-review company, regulator, attorney, or government agency.

Page Update Note

This page was substantially revised on July 28, 2026. The update replaced 1411 Opus Place as Gallagher Bassett’s headquarters with the current 2850 Golf Road Rolling Meadows address; reclassified the Downers Grove location as a continuing Technical Services, branch, regulatory, or program-specific office; confirmed 1-630-773-3800 as the corporate number; added the current 1-833-707-6338 claimant-support line and published hours; clarified that Gallagher Bassett is a third-party claims administrator rather than necessarily the insurance carrier; explained why there is no universal claims, workers’ compensation, provider, billing, or medical-bill mailing address; added claim-specific mailing and routing guidance; expanded workers’ compensation, treatment-authorization, wage-benefit, provider-billing, medical-fee, automobile, liability, settlement, privacy, regulatory, careers, and complaint-escalation guidance; added current ownership, public-company, leadership, office-network, and service information; confirmed that no reader reviews are currently visible; removed the inaccurate headquarters image from the revised HTML; removed insurance carriers from the direct competitor list; retained Aon only as a broader risk-services comparison; and added current official resources and search-focused FAQs.

Disclaimer

This page is provided for general corporate-office, claims-administration, workers’ compensation, insurance, risk-management, contact, and consumer-feedback information. CorporateOfficeHeadquarters.com does not represent Gallagher Bassett Services, Arthur J. Gallagher & Co., an employer, insurance carrier, self-insured entity, public agency, captive, Resolution Manager, medical provider, pharmacy, bill-review service, regulator, attorney, or government agency.

Addresses, telephone numbers, executives, claim assignments, provider networks, billing procedures, mailing instructions, benefit rules, office locations, appeal rights, and regulatory processes may change. Verify time-sensitive and claim-specific information through the current claim correspondence, employer, insurance carrier, Resolution Manager, official company resource, or applicable regulator.

Nothing on this page is legal, medical, insurance, workers’ compensation, employment, tax, privacy, financial, claim-settlement, provider-billing, or regulatory advice. Claimants and providers should preserve filing, appeal, authorization, and billing deadlines and seek qualified assistance when formal rights are involved.

CorporateOfficeHeadquarters.com cannot access a Gallagher Bassett claim, authorize treatment, change a provider, issue a payment, approve a settlement, locate a check, decide compensability, correct a medical bill, file an appeal, submit a privacy request, or contact a Resolution Manager on a reader’s behalf.

Share Your Experience

Readers may share a firsthand Gallagher Bassett experience in the comments. Helpful submissions identify whether the matter involved the Rolling Meadows headquarters, Downers Grove office, a Resolution Manager, workers’ compensation claim, automobile or liability claim, medical authorization, provider bill, wage payment, reimbursement, settlement, employer, insurer, self-insured organization, public entity, privacy request, or employment inquiry; the general state and claim type; the contact route used; the approximate response time; and whether the issue was resolved.

Do not publish full claim, policy, medical, pharmacy, provider, invoice, payment, settlement, bank, employee, Social Security, workers’ compensation, legal, or account numbers; dates of birth; diagnoses; medical records; prescriptions; wage records; tax forms; bank information; passwords; verification codes; home addresses; precise treatment locations; private telephone numbers or email addresses; photographs of identification; signed releases; confidential correspondence; children’s information; or private employee and adjuster details.

Do not identify individual Resolution Managers, medical providers, supervisors, attorneys, employees, or claimants unnecessarily. Do not publish unsupported accusations that an identifiable person or company committed fraud, theft, bad faith, discrimination, retaliation, a crime, or intentional misconduct. Describe firsthand events, documents, and the requested resolution without presenting an unverified legal, medical, insurance, or regulatory conclusion as established fact.

Spam, threats, doxxing, impersonation, discriminatory content, retaliation demands, unsupported criminal accusations, privileged communications, confidential settlement material, protected health information, private employee information, and sensitive financial, medical, employment, claim, or personal information may be edited, withheld, or removed.