Where to mail an MIB consumer file dispute
To dispute an error on your MIB consumer file by mail, send your letter to MIB Disclosure Office, 50 Braintree Hill Park, Suite 400, Braintree, MA 02184. MIB (formerly the Medical Information Bureau) maintains a database of medical and health underwriting information — codes summarizing things like a past diagnosis or risky activity — that life, health, and disability insurers share with each other when you apply for individually underwritten coverage. Under the FCRA, there is no charge to submit a dispute.
MIB — mail-in disputes
MIB Disclosure Office 50 Braintree Hill Park, Suite 400 Braintree, MA 02184
Disputing inaccurate medical/health underwriting information on your MIB consumer file by mail.
Write it now. We print & mail it for $5.
Type your letter in the browser. We print it, stamp it, and hand it to USPS — usually same business day. No printer, no stamps, no post office.
$5 flat · postage included · no account needed
- You write & pay
- We print & envelope
- USPS, next business day
- Confirmation of Mailing emailed
Your name
Your return address
MIB Disclosure Office50 Braintree Hill Park, Suite 400Braintree, MA 02184
Your letter, printed and mailed for you.
Key facts
- Mailed disputes go to MIB Disclosure Office, 50 Braintree Hill Park, Suite 400, Braintree, MA 02184.
- MIB maintains coded medical/health underwriting information shared between life, health, and disability insurers — not credit accounts.
- Insurers typically check MIB when you apply for individually underwritten life, health, or disability insurance, to help detect undisclosed conditions.
- There is no charge to request your MIB file or to submit a dispute.
- MIB will ask for a signed Request for Reinvestigation form, or you can submit a signed dispute letter with the specifics of what is wrong.
How to send your letter
- 1
Request your MIB consumer file first
Request your file (free) so you can see exactly which coded entries are on record and cite the specific one you are disputing.
- 2
Write a clear, signed dispute letter
State your full name and current address, identify the disputed entry, explain why it is wrong, and sign the letter — MIB requires a signed request for reinvestigation.
- 3
Attach copies of your evidence
Include copies of anything that supports your dispute — a letter from your physician, corrected medical records, or a prior insurer’s statement. Keep your originals.
- 4
Mail it to MIB
Address it to MIB Disclosure Office, 50 Braintree Hill Park, Suite 400, Braintree, MA 02184. A dated proof of mailing gives you a record of when your dispute was submitted.
- 5
Send it without a printer
Write your dispute in PostPal, attach your evidence as PDFs or photos, and we print, envelope, and mail it via USPS for $5 — with a dated confirmation email as your proof of mailing.
Common questions
What is the mailing address to dispute my MIB file?
MIB Disclosure Office, 50 Braintree Hill Park, Suite 400, Braintree, MA 02184. MIB asks for a signed Request for Reinvestigation form or a signed dispute letter with the specific inaccuracy.
What is MIB and why do I have a file there?
MIB (formerly the Medical Information Bureau) maintains a database of coded medical/health underwriting information that life, health, and disability insurers share with each other. You likely have a file because you applied for individually underwritten insurance at some point.
Does MIB charge for a dispute?
No — there is no charge to request your MIB file or to submit a dispute under the FCRA.
Is MIB the same as a credit bureau?
No. MIB is a specialty consumer reporting agency focused on medical/health underwriting information shared among insurers, not credit accounts. Equifax, Experian, and TransUnion are separate agencies that handle credit reports.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.