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Internal Medicine Providers in Northampton, MA

Browse 21 Internal Medicine providers listed in NPPES with a practice address in Northampton, Massachusetts.

21 Healthcare Providers

How Northampton compares with the U.S.

Northampton has 68 clinicians in Internal Medicine per 100,000 residents, about 1.5 times the U.S. rate of 44.

That is 21 active clinicians in Internal Medicine with a practice address in Northampton, for a population of 30,962.

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 Northampton 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.

27% of clinicians in Internal Medicine in Northampton listed in the CMS Medicare file (3 of 11) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower 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 Northampton, MA

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Northampton, MA
Part B Lab & Imaging Eligible 13 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“20 of 21 providers
With recent CMS data first, then Aโ€“Z

Dr. David B Alpern , MD

Internal Medicine

Active NPI Status
90 Conz Street, 101, Northampton, MA 01060
Phone: 4135821847
NPI Identifier 1568422608
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Dr. Elizabeth A Armstrong , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
325b King St, Northampton, MA 010602370
Phone: 4133874100
NPI Identifier 1881626786
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Dr. Christine D. Baker , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
190 Nonotuck St, Northampton, MA 010621911
Phone: 4135849511
NPI Identifier 1518946359
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Dr. Paul George Cheriyan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust St, Northampton, MA 01060
Phone: 4135822792
NPI Identifier 1568720357
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Dr. Edward M Dean , MD

Internal Medicine

Active NPI Status
264 Elm St, Suite 10, Northampton, MA 010602857
Phone: 4135861100
NPI Identifier 1376528638
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Dr. Peter Andrew Elsea , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
22 Atwood Dr, Northampton, MA 010604267
Phone: 4135842178
NPI Identifier 1699731182
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Katharine Ewall

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust St, Northampton, MA 010602052
Phone: 4135822792
NPI Identifier 1922217751
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Dr. Diana Israeli , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust St, Northampton, MA 01060
Phone: 4135822792
NPI Identifier 1245541929
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Dr. Shasta A Kielbasa , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust St, Northampton, MA 010602052
Phone: 4135822792
NPI Identifier 1245486901
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Dr. Howard Douglas Klein , MD

Internal Medicine

Active NPI Status
421 N Main St, Northampton, MA 010605302
Phone: 4135844040
NPI Identifier 1063456325
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Dr. James A Most , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust St, Northampton, MA 010602052
Phone: 4135822792
NPI Identifier 1518982933
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Dr. Mark Novotny , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Locust Street, Northampton, MA 01061
Phone: 4135822792
NPI Identifier 1427072479
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Dr. Henry W. Rosenberg , MD

Internal Medicine

Active NPI Status
76 Carlon Dr, #b, Northampton, MA 010602373
Phone: 4135842178
NPI Identifier 1801859152
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Dr. Margaret A. Russo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
49 Columbus Ave, Northampton, MA 010604252
Phone: 4133201139
NPI Identifier 1558338533
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Dr. Heather Wark , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
548 Elm St, Northampton, MA 010602832
Phone: 4135863150
NPI Identifier 1063422749
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Dr. Bruce M. Weinraub , MD

Internal Medicine

Active NPI Status
76 Carlon Dr, #c, Northampton, MA 010602373
Phone: 4135850700
NPI Identifier 1447225099
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Dr. Peter J Betjemann , MD

Internal Medicine

Active NPI Status
Cooley Dickinson Hospital, 30 Locust Street, Northampton, MA 01601
Phone: 4135822480
NPI Identifier 1598804387
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Dr. Tara J Dumont , MD

Internal Medicine

Active NPI Status
325b King St, Northampton, MA 010602370
Phone: 4133874100
NPI Identifier 1467515163
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Dr. Andrew F. Hall , MD

Internal Medicine

Active NPI Status
264 Elm St, Suite 12, Northampton, MA 010602857
Phone: 4135861100
NPI Identifier 1073593679
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Dr. Anne Mckinnon , MD

Internal Medicine

Active NPI Status
264 Elm St, Stes. 10&12, Northampton, MA 010602857
Phone: 4135861100
NPI Identifier 1255311452
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Frequently Asked Questions about Internal Medicine in Northampton

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.