Billing & Insurance

Important Phone Numbers

Call your... If you have questions or information about... Call number...
MGH Patient Financial Services Your account 415-925-7070
Social Security Administration (SSA) Lost Medicare card, address change, Social Security benefits, Medicare enrollment, Medicare premium amounts 1-800-772-1213
State Health Insurance Advisory Program Medicare bills, information on Supplemental Insurance Policies & long term care insurance, payment denials and appeals, Medicare rights and protections, treatment complaints, and help choosing Medicare health plan 1-800-548-9034
Medicare Carrier Part B coverage and bills, medical services, and recognizing fraud and abuse 1-800-633-4227
Fiscal Intermediary (FI) Part A coverage and bills, hospital care and skilled nursing care 1-800-633-4227
Health Care Financing Administration (HCFA) Regional Office Local seminars and health fairs on your new Medicare health plan choices 1-312-353-7180
Medicare Hotline Ordering other Medicare publications 1-800-633-4227
Medicare MSA
Information Line
Medicare Medical Savings Accounts 1-800-633-4227
Office of the
Inspector General
How to report Medicare fraud and abuse 1-800-447-8477
State Insurance
Medicare Supplemental Insurance Policies available in your area 1-217-782-4515
Medicare Helpful
Contact List
Medicare related questions Click here to access the list
State Medical
Assistance Office List
State Specific Medicare Questions Click here to access the list