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Internal Medicine Providers in Natick, MA

Browse 22 Internal Medicine providers listed in NPPES with a practice address in Natick, Massachusetts.

22 Healthcare Providers

How Natick compares with the U.S.

Natick has 60 clinicians in Internal Medicine per 100,000 residents, about 1.3 times the U.S. rate of 44.

That is 22 active clinicians in Internal Medicine with a practice address in Natick, for a population of 36,873.

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.

92% of clinicians in Internal Medicine in Natick listed in the CMS Medicare file (11 of 12) 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.

75% of clinicians in Internal Medicine in Natick listed in the CMS Medicare file (9 of 12) 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 Natick, MA

Source: CMS PECOS
PECOS Enrolled Specialists 12 In Natick, MA
Part B Lab & Imaging Eligible 12 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 12 HHA Ordering Eligible
Showing 1โ€“20 of 22 providers
With recent CMS data first, then Aโ€“Z

Dr. Kathlyne Anderson , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
83 Speen St, Natick, MA 01760
Phone: 5089076542
NPI Identifier 1982669925
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Dr. Prakash Bandari , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
67 Union St Ste 503, Natick, MA 017607700
Phone: 5086519503
NPI Identifier 1407812084
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Dr. Karen-Gail Brandse , MD

Internal Medicine

Active NPI Status Telehealth Services Available
67 Union St, Natick, MA 017607700
Phone: 5086507640
NPI Identifier 1588645790
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Dr. David C Gdula , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
83 Speen St, Natick, MA 01760
Phone: 5089076544
NPI Identifier 1558382705
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Dr. Dainius Juknelis , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
67 Union St Ste 407, Natick, MA 017607700
Phone: 5088813029
NPI Identifier 1073731501
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Dr. L Frederick Kaplan , MD

Internal Medicine

Active NPI Status
67 Union St, Suite 202, Natick, MA 017607700
Phone: 5086537388
NPI Identifier 1992826648
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Dr. Raul Laguarda , MD

Internal Medicine

Active NPI Status
67 Union St, Hodgson Building, 5th Floor, Natick, MA 01760
Phone: 5086534874
NPI Identifier 1427013242
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Dr. Simone Mordas , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
192 Worcester Rd, Natick, MA 017602252
Phone: 5086471040
NPI Identifier 1073507984
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Dr. Wendy J. Parker , MD

Internal Medicine

Active NPI Status
307 W Central St, Natick, MA 017603719
Phone: 5088208383
NPI Identifier 1013087659
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Dr. Dennis H Rapa , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
67 Union St, Ste 108, Natick, MA 01760
Phone: 5086650073
NPI Identifier 1730142761
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Dr. Trista N Repassy , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
190 N Main St, First Floor, Natick, MA 017602057
Phone: 5086552555
NPI Identifier 1073560769
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Dr. Rodrigo Rocha , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
67 Union St Ste 407, Natick, MA 017607700
Phone: 5086652338
NPI Identifier 1619186319
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Dr. Joann Suna , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
307 West Central Street, Med Assoc. Of Greater Boston, Natick, MA 01760
Phone: 5088208383
NPI Identifier 1801854633
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Dr. Amir Soheil Tolebeyan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10 Union St Ste 2d, Natick, MA 017604759
Phone: 3144495866
NPI Identifier 1053762682
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Dr. Linda C Tsai , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
190 N Main St, Natick, MA 017602057
Phone: 5086471600
NPI Identifier 1750489449
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Dr. Zechariah Tanner Dillingham , MD

Internal Medicine

Active NPI Status
10 General Greene Ave, Bldg 42, Military Nutrition Division, Natick, MA 017605007
Phone: 5082062458
NPI Identifier 1144673823
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Dr. Maria Jose Guillen Sacoto , MD

Internal Medicine

Active NPI Status
20 Edwards Rd, Natick, MA 017603317
Phone: 6178935702
NPI Identifier 1588828750
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Dr. Stephen K Holland , MD

Internal Medicine

Active NPI Status
5 Commonwealth Rd, Natick, MA 017601526
Phone: 5086518800
NPI Identifier 1942444377
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Dr. Andrew Samuel Lane , MD

Internal Medicine

Active NPI Status
1 Marston Ln, Natick, MA 017605645
Phone: 5086551366
NPI Identifier 1750516670
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Dr. Michael L Rich , MD

Internal Medicine

Active NPI Status
63 Park Ave, Natick, MA 017602037
Phone: 5086530893
NPI Identifier 1972738755
View Full Profile

Frequently Asked Questions about Internal Medicine in Natick

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.