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Internal Medicine Providers in Gaithersburg, MD

Browse 67 Internal Medicine providers listed in NPPES with a practice address in Gaithersburg, Maryland.

67 Healthcare Providers

How Gaithersburg compares with the U.S.

Gaithersburg has 96 clinicians in Internal Medicine per 100,000 residents, 2.2 times the U.S. rate of 44.

That is 67 active clinicians in Internal Medicine with a practice address in Gaithersburg, for a population of 69,825.

The Maryland rate is 63 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.

96% of clinicians in Internal Medicine in Gaithersburg listed in the CMS Medicare file (45 of 47) accept Medicare assignment. That is higher than the Maryland share of 86%.

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.

28% of clinicians in Internal Medicine in Gaithersburg listed in the CMS Medicare file (13 of 47) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Maryland share of 41%.

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 Gaithersburg, MD

Source: CMS PECOS
PECOS Enrolled Specialists 56 In Gaithersburg, MD
Part B Lab & Imaging Eligible 56 Diagnostic Referrals
DME Ordering Eligible 57 Durable Medical Equipment
Home Health Agency Referrals 56 HHA Ordering Eligible
Showing 1โ€“20 of 67 providers
With recent CMS data first, then Aโ€“Z

Hamdi Abdeen

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2403065408
NPI Identifier 1245972413
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Dr. Suhair A Abulfarag , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
604 S Frederick Ave Ste 413, Gaithersburg, MD 208771284
Phone: 3013304414
NPI Identifier 1093818932
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Kathleen Adeshoga

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2408138740
NPI Identifier 1184360257
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Dr. Haizia Lamia Amsler , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
201 Russell Ave, Gaithersburg, MD 208772800
Phone: 3015572110
NPI Identifier 1265612618
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Dr. Linda Anne Benson , MD

Internal Medicine

Active NPI Status
501 North Frederick Avenue, Gaithersburg, MD 20877
Phone: 3012587700
NPI Identifier 1316073265
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Dr. Julie May Chen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, 5th Fl Residency Office, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1629048467
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Dr. Qiufang Cheng , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
16009 Comprint Cir, Gaithersburg, MD 208771318
Phone: 3013398264
NPI Identifier 1073734810
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Dr. Jose De Leon Carpio , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1275682320
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Dr. James Francis Duffy , MD

Internal Medicine

Active NPI Status
7 Metropolitan Ct, Suite 1, Gaithersburg, MD 208784016
Phone: 2407730300
NPI Identifier 1174695266
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Dr. Kathleen Frekko Farrell , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
818 West Diamond Avenue, Ste 130, Gaithersburg, MD 20878
Phone: 3019488780
NPI Identifier 1033328430
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Dr. Rebecca Felsen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
200 Girard St, Suite 212a, Gaithersburg, MD 208773466
Phone: 3012160880
NPI Identifier 1477863884
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Dr. Kamala A Foster , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
501 N Frederick Ave, Suite 304, Gaithersburg, MD 208772507
Phone: 3013303541
NPI Identifier 1174680656
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Dr. Lingling Gao , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1285959932
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Dr. Kshama Garg , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
16075 Comprint Cir, Gaithersburg, MD 208771321
Phone: 4049985662
NPI Identifier 1295806511
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Dr. Jean Ru Jen Hou , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1750442273
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Dr. Katrina Hsieh , DO

Internal Medicine

Active NPI Status
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2406324021
NPI Identifier 1326626250
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Dr. Madhavi Hubbly , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
12116 Darnestown Rd, Suite L5, Gaithersburg, MD 208782227
Phone: 3015284134
NPI Identifier 1710074521
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Dr. Miranda Kai Hunter , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2408138740
NPI Identifier 1083292619
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Dr. Sahar Aslani Jahan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
655 Watkins Mill Rd, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1669993523
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Dr. Shailini Parikh Jain , MD

Internal Medicine

Active NPI Status
655 Watkins Mill Road, Kaiser Permanente Gaithersburg Medical Center, Gaithersburg, MD 208793301
Phone: 2406324000
NPI Identifier 1588711022
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Frequently Asked Questions about Internal Medicine in Gaithersburg

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 Maryland 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.