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Internal Medicine - Gastroenterology Specialists in Dallas, TX

Browse 168 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Dallas, Texas.

168 Healthcare Providers

How Dallas compares with the U.S.

Dallas has 13 clinicians in Internal Medicine - Gastroenterology per 100,000 residents, 2.1 times the U.S. rate of 6.2.

That is 168 active clinicians in Internal Medicine - Gastroenterology with a practice address in Dallas, for a population of 1,307,930.

The Texas rate is 4.9 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.

99% of clinicians in Internal Medicine - Gastroenterology in Dallas listed in the CMS Medicare file (134 of 136) accept Medicare assignment. That is similar to the Texas share of 98%.

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.

56% of clinicians in Internal Medicine - Gastroenterology in Dallas listed in the CMS Medicare file (76 of 136) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Texas share of 40%.

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 - Gastroenterology Medicare (PECOS) Enrollment & Ordering Eligibility

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

Source: CMS PECOS
PECOS Enrolled Specialists 146 In Dallas, TX
Part B Lab & Imaging Eligible 149 Diagnostic Referrals
DME Ordering Eligible 150 Durable Medical Equipment
Home Health Agency Referrals 149 HHA Ordering Eligible
Showing 1โ€“20 of 168 providers
With recent CMS data first, then Aโ€“Z

Dr. Ariel Winona Aday , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5200 Harry Hines Blvd, Dallas, TX 752357709
Phone: 2146458600
NPI Identifier 1609132620
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Dr. Abrar Ahmed , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
8230 Walnut Hill Ln, Suite 610, Dallas, TX 752314482
Phone: 2143457398
NPI Identifier 1164533477
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Dr. Amisha Ahuja , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6201 Harry Hines Blvd, Dallas, TX 753904414
Phone: 2146335555
NPI Identifier 1912431966
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Sagal Ali

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5323 Harry Hines Blvd, Dallas, TX 753907201
Phone: 9899287007
NPI Identifier 1578959094
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Dr. Jamil Sami Alsahhar , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3410 Worth St Ste 860, Dallas, TX 752462064
Phone: 2148208500
NPI Identifier 1922443001
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Dr. Lisa Cristina Alvarez , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
8220 Walnut Hill Ln Ste 710, Dallas, TX 752314427
Phone: 2143686707
NPI Identifier 1437315959
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Dr. Amin Mamoon Amin , MBCHB

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5151 Harry Hines Blvd, Dallas, TX 753907201
Phone: 2146458300
NPI Identifier 1750884540
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Dr. Robert Douglas Anderson , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3417 Gaston Avenue, Suite 790, Dallas, TX 75246
Phone: 2148215266
NPI Identifier 1861514929
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Dr. Sami Naci Arslanlar , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
8220 Walnut Hill Ln Ste 710, Dallas, TX 752314427
Phone: 2143686707
NPI Identifier 1033235684
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Dr. Muhammad Arslan Baig , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
221 W. Colorado Blvd., Pavilion Ii Suite 630, Dallas, TX 75208
Phone: 4696952035
NPI Identifier 1497121305
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Dr. Indira Bhavsar-Burke , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5200 Harry Hines Blvd, Dallas, TX 752357709
Phone: 2145908000
NPI Identifier 1265894810
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Moheb Nabil Boktor

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6201 Harry Hines Blvd, Dallas, TX 753904228
Phone: 2146456355
NPI Identifier 1811187354
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Dr. Jeffrey D Browning , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5323 Harry Hines Blvd, Dallas, TX 753907208
Phone: 2146458600
NPI Identifier 1871550285
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Dr. Ezra Burstein , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5959 Harry Hines Blvd, Dallas, TX 752356234
Phone: 2146450595
NPI Identifier 1033291554
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Dr. Angela Anderson Carollo , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3417 Gaston Avenue, Suite 790, Dallas, TX 75246
Phone: 2148215266
NPI Identifier 1306805585
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Dr. Lisa Catherine Casey , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
5323 Harry Hines Blvd, Dallas, TX 753907208
Phone: 2146456340
NPI Identifier 1245279264
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Dr. Ahmed Chatila , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3434 Swiss Ave Ste 200, Dallas, TX 752046251
Phone: 9728176980
NPI Identifier 1376079145
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Dr. Vibhu Chittajallu , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6201 Harry Hines Blvd, Dallas, TX 752355202
Phone: 2146335555
NPI Identifier 1376049916
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Dr. Byron Leon Cryer , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4500 S Lancaster Rd, Dallas, TX 752167167
Phone: 2148571603
NPI Identifier 1225042427
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Dr. Themistocles Dassopoulos , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3409 Worth Street, Suite 640, Dallas, TX 75246
Phone: 4698007180
NPI Identifier 1326083148
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Dallas

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 Texas 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.