Massachusetts Billing Rights

Filing a Complaint

Consumers with questions about a surprise bill can contact the Division of Insurance by filling out a complaint form DOI Insurance Complaint Submission Form at www.mass.gov/how-to/filing-an-insurance-complaint, e-mailing CSSComplaints@mass.gov, or by calling 877-563-4467 and selecting Option 2.

State Agency Contact Information

Massachusetts Division of Insurance

Phone: 877-563-4467
Website: www.mass.gov/how-to/filing-an-insurance-complaint

Additional Information

Consumers can also contact the Centers for Medicare and Medicaid Services (CMS) to learn more at www.cms.gov/nosurprises/consumers/complaints-about-medical-billing, or by calling 800-985-3059.