William M Gaines, MD - Medicare Internal Medicine in Auburn, MA

William M Gaines, MD is a medicare enrolled "Internal Medicine" physician in Auburn, Massachusetts. His current practice location is 385 Southbridge St, Auburn, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 721-1170.

William M Gaines is licensed to practice in Massachusetts (license number 56092) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1184684078.

Contact Information

William M Gaines, MD
385 Southbridge St,
Auburn, MA 01501-2498
(508) 721-1170
(508) 832-0859

Map and Direction




Physician's Profile

Full NameWilliam M Gaines
GenderMale
SpecialityInternal Medicine
Location385 Southbridge St, Auburn, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1184684078
  • Provider Enumeration Date: 03/24/2006
  • Last Update Date: 03/14/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 2062554587
  • Enrollment ID: I20100122000019

Medical Identifiers

Medical identifiers for William M Gaines such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184684078NPI-NPPES
7401287OtherAETNA US HEALTHCARE
9900247OtherFALLON COMMUNITY HEALTH P
042472266OtherONE HEALTH PLAN
3018598MedicaidMA
AA1298OtherHARVARD PILGRIM HEALTHCAR
J06139OtherBLUE SHIELD HMO BLUE
J06139OtherBLUE SHIELD INDEMNITY
042472266OtherHEALTHCARE VALUE MGMT
0400948OtherEVERCARE
26819OtherHEALTHY START
4290501OtherCIGNA HEALTH PLAN
784135OtherMVP HEALTH CARE
J06139OtherBLUE CARE ELECT
042472266OtherPRIVATE HEALTHCARE SYSTEM
1060231OtherFIRST HEALTH
26819OtherCHILDRENS MED SEC PLAN
110175376OtherRAILROAD MEDICARE
J06139OtherMEDICARE B

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 56092 (Massachusetts)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William M Gaines allows following entities to bill medicare on his behalf.
Entity NameReliant Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720017528
PECOS PAC ID: 5597755322
Enrollment ID: O20040708000650

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William M Gaines is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William M Gaines, MD
5 Neponset St Fl St2,
Worcester, MA 01606-2714

Ph: (508) 368-5532
William M Gaines, MD
385 Southbridge St,
Auburn, MA 01501-2498

Ph: (508) 721-1170

Reviews and Comments


Internal Medicine Doctors in Auburn, MA

Dr. Hesham M. A. Hammouda, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 103 Millbury St, Auburn, MA 01501
Phone: 508-721-4100    Fax: 508-721-4124
Chloe Sihua Deng, D.O.
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Medicare: Accepting Medicare Assignments
Practice Location: 489 Washington St, Auburn, MA 01501
Phone: 508-832-9646    
Daniel B Guilbert, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 385 Southbridge St, Auburn, MA 01501
Phone: 508-721-1170    Fax: 508-832-0859
Steven R Rozak, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 489 Washington St, Auburn, MA 01501
Phone: 508-832-9646    Fax: 508-832-7862
Lauren Needell, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 489 Washington St, Auburn, MA 01501
Phone: 508-832-9646    Fax: 508-832-7862
Putcha R Murthy, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 385 Southbridge St, Auburn, MA 01501
Phone: 508-721-1170    Fax: 508-832-0859
Rebecca L Kesman, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 385 Southbridge St, Auburn, MA 01501
Phone: 508-721-1170    Fax: 508-832-0859

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.