How To Submit Claims To Mass General Brigham Health Plan

Coverage: Massachusetts Mass General Brigham Health Plan; the verified filing guidance is for commercial and MGB ACO billing, not every Medicare, One Care or SCO product.

Mass General Brigham Health Plan claims guidance from the reviewed sources: Paper or electronic claims through the applicable product-specific submission route. Confirm the member plan and claim type before using a payer ID or paper address.

At a glance

Use the claims page’s product and provider-location decision path before submission.

Submission channels

Paper or electronic claims through the applicable product-specific submission route.

Electronic claims payer IDs

Not clearly published in the researched sources.

Paper claims addresses

Not clearly published in the researched sources.

Corrected claims and follow-up

Not clearly published in the researched sources.
No direct topic-specific link was captured in the current research set.

Caveats

Confirm whether direct plan billing or another administrator applies. No universal payer ID or postal address is asserted. Provider portal access requires credentials.

Provider resources

Sources

Fact	Value	Source	Confidence
Official policy review	Use the claims page’s product and provider-location decision path before submission.	Official	high

Update notes

Last updated: 2026-10-30.

Verified official claims and authorization pages and their linked filing guidance. Limited the 90-day rule to the identified billing scope and retained contract exceptions.
The filing PDF is hosted on the plan-linked HubSpot document service. Medicare, One Care, SCO and out-of-state employee-plan routes need separate confirmation.

Last reviewed: October 30, 2026

Sources used: 1 official