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Internal Medicine Providers in Acton, MA

Browse 17 Internal Medicine providers listed in NPPES with a practice address in Acton, Massachusetts.

17 Healthcare Providers

How Acton compares with the U.S.

Acton has 70 clinicians in Internal Medicine per 100,000 residents, about 1.6 times the U.S. rate of 44.

That is 17 active clinicians in Internal Medicine with a practice address in Acton, for a population of 24,155.

The Massachusetts rate is 97 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine in Acton listed in the CMS Medicare file (11 of 11) accept Medicare assignment. That is similar to the Massachusetts share of 96%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

82% of clinicians in Internal Medicine in Acton listed in the CMS Medicare file (9 of 11) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Massachusetts share of 48%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Acton, MA

Source: CMS PECOS
PECOS Enrolled Specialists 12 In Acton, MA
Part B Lab & Imaging Eligible 12 Diagnostic Referrals
DME Ordering Eligible 12 Durable Medical Equipment
Home Health Agency Referrals 12 HHA Ordering Eligible
Showing 1โ€“17 of 17 providers
With recent CMS data first, then Aโ€“Z

Dr. Christine Hardy Brown , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9786358700
NPI Identifier 1588861660
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Dr. Amy Churchill , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1033171749
View Full Profile

Dr. Natalie L. Cohen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9786358700
NPI Identifier 1700179678
View Full Profile

Dr. Peter James Demartino , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
321 Main St, Acton, MA 017203718
Phone: 9782631425
NPI Identifier 1043292360
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Meenakshi Garg

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203799
Phone: 9786358700
NPI Identifier 1497992192
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Dr. Allessandro Girolamo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9786358700
NPI Identifier 1689636300
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Dr. Ingrid Gorman , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1053302158
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Dr. Edwin Brooke Knights , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1801885512
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Dr. Deborah B. Kovacs , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main Street, Acton Medical Associates, Pc, Acton, MA 017203799
Phone: 9786358700
NPI Identifier 1386634772
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Dr. Teli Leung-Galecki , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 017203718
Phone: 9786358700
NPI Identifier 1043363088
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Dr. Amy R Lo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
321 Main St, Acton, MA 017203799
Phone: 9786358700
NPI Identifier 1174783526
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Dr. Narine Sharkhatunyan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
321 Main St, Acton, MA 01720
Phone: 9786358700
NPI Identifier 1518321991
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Dr. Ilia Shlimak , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9786358700
NPI Identifier 1871554964
View Full Profile

Dr. Elliot Steger , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1427047141
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Dr. Claudia Talland , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1184690505
View Full Profile

Dr. Jon Winston Way , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1366431009
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Dr. Thomas Wong , MD

Internal Medicine

Active NPI Status
321 Main St, Acton, MA 017203718
Phone: 9782631131
NPI Identifier 1194715680
View Full Profile

Frequently Asked Questions about Internal Medicine in Acton

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Massachusetts licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.