Internal Medicine Doctors in Groton, MA Accepting Medicare

8 Internal Medicine doctors found. Showing 1 - 8
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Dr. Thomas A Goodman, MD
Internal Medicine - Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Boston Rd, Groton, MA 01450
Phone: 978-448-4300    Fax: 978-448-4040
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Dr. Hilde Hamar Westvik, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1 Forge Village Road, Ste C, Groton, MA 01450
Phone: 978-449-0282    
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Montu Patel, D.O.
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 1 Forge Village Rd, Groton, MA 01450
Phone: 978-449-0282    Fax: 978-449-0289
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Alla R Sarkisyan, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 497 Main Street, 4b, Groton, MA 01450
Phone: 978-449-0471    Fax: 978-784-9982
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Dr. Dorothy M Christiansen, MD
Internal Medicine - Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Boston Rd, Groton, MA 01450
Phone: 978-448-4300    Fax: 978-448-4040
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Mrs. Megan-rose Comeiro, NP
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 120 Boston Rd Ste 200, Groton, MA 01450
Phone: 781-646-0500    
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Dr. Alfred W. Heinser, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 100 Boston Rd, Groton, MA 01450
Phone: 978-448-4300    Fax: 978-448-4040
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Vandana Sahay, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 497 Main St, Suite 4b, Groton, MA 01450
Phone: 978-784-9975    Fax: 978-784-9982
Popular Specializations in Groton, MA:

Internal Medicine
Pediatrics
Family Medicine
Rheumatology
Psychiatry & Neurology
Obstetrics & Gynecology


Internal Medicine: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.


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.