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Internal Medicine - Gastroenterology Specialists in Fairfax, VA

Browse 34 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Fairfax, Virginia.

34 Healthcare Providers

How Fairfax compares with the U.S.

Fairfax has 136 clinicians in Internal Medicine - Gastroenterology per 100,000 residents, 21.8 times the U.S. rate of 6.2.

That is 34 active clinicians in Internal Medicine - Gastroenterology with a practice address in Fairfax, for a population of 25,026.

The Virginia rate is 6.2 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 - Gastroenterology in Fairfax listed in the CMS Medicare file (26 of 27) accept Medicare assignment. That is similar to the Virginia share of 97%.

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.

70% of clinicians in Internal Medicine - Gastroenterology in Fairfax listed in the CMS Medicare file (19 of 27) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Virginia 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@t-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of November 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 - Gastroenterology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Gastroenterology practitioners in Fairfax, VA

Source: CMS PECOS
PECOS Enrolled Specialists 31 In Fairfax, VA
Part B Lab & Imaging Eligible 32 Diagnostic Referrals
DME Ordering Eligible 32 Durable Medical Equipment
Home Health Agency Referrals 32 HHA Ordering Eligible
Showing 1โ€“20 of 34 providers
With recent CMS data first, then Aโ€“Z

Dr. Mahmood Abedi , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1649255233
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Dr. Tonya Lynn Adams , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 22031
Phone: 7036988960
NPI Identifier 1861472862
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Dr. Waseem Ismail Aziz , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
3700 Joseph Siewick Dr, Suite 401, Fairfax, VA 220331744
Phone: 7032811023
NPI Identifier 1023038270
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Dr. Nader H Balba , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1013949254
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Dr. Felice L Banson , MD

Internal Medicine - Gastroenterology

Active NPI Status
3700 Joseph Siewick Dr Ste 308, Fairfax, VA 22033
Phone: 7036988960
NPI Identifier 1962407924
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Dr. Richard Allen Blosser , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3700 Joseph Siewick Dr, Suite 401, Fairfax, VA 220331744
Phone: 7032811023
NPI Identifier 1720048630
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Dr. Ricardo Cabello , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3620 Joseph Siewick Dr, Fairfax, VA 220331756
Phone: 7033913960
NPI Identifier 1184041550
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Dr. Mindy Chen , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
3028 Javier Rd Ste 300, Fairfax, VA 220314622
Phone: 0369889607
NPI Identifier 1750840831
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Dr. Jean Al Donet Mostacero , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
8081 Innovation Park Dr Ste 301, Fairfax, VA 220314867
Phone: 5714726431
NPI Identifier 1245593292
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Dr. Ali Fazel , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
8501 Arlington Blvd, Suite 525, Fairfax, VA 220314617
Phone: 7034943199
NPI Identifier 1225024748
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Dr. Leonard Stephen Fischer , MD

Internal Medicine - Gastroenterology

Active NPI Status
3620 Joseph Siewick Dr, Suite 307, Fairfax, VA 220331756
Phone: 7032811023
NPI Identifier 1487614863
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Dr. Michael A Garone , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
3700 Joseph Siewick Dr, Suite 308, Fairfax, VA 220331744
Phone: 7036988960
NPI Identifier 1255311189
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Dr. Ivan Peter Harnden , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
8081 Innovation Park Dr, Fairfax, VA 220314867
Phone: 5714726431
NPI Identifier 1568781706
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Dr. Ahmed Hegab , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1699793372
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Dr. Charles Jun Huh , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
4001 Fair Ridge Dr, #206, Fairfax, VA 220332917
Phone: 7032620200
NPI Identifier 1255379889
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Dr. Behzad Kalaghchi , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1356337158
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Asma Khapra

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3022 Williams Dr, #301, Fairfax, VA 220314600
Phone: 7037168700
NPI Identifier 1770702011
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Dr. Byungki Kim , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1255307906
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Dr. Iris Lee , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
3028 Javier Rd Ste 500, Fairfax, VA 220314622
Phone: 7036988960
NPI Identifier 1881911667
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Dr. Kenneth R Mirkin , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
3028 Javier Rd Ste 500, Fairfax, VA 22031
Phone: 7036988960
NPI Identifier 1952372542
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Fairfax

How do I check a Internal Medicine - Gastroenterology 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 Virginia 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.