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Internal Medicine Doctors in Texas

Data updated monthly · Last refresh October 2026

9,182 Internal Medicine providers practice in Texas, including 1,804 (20%) offering telehealth. The largest concentration is in Houston. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

9,182providers
1,804telehealth
Houstontop city

Internal Medicine by city in Texas

Choose a city to see providers there.

Internal Medicine in Houston1,496 providers
Internal Medicine in Dallas950 providers
Internal Medicine in San Antonio658 providers
Internal Medicine in Austin607 providers
Internal Medicine in Fort Worth394 providers
Internal Medicine in El Paso263 providers
Internal Medicine in Galveston217 providers
Internal Medicine in Plano209 providers
Internal Medicine in Temple195 providers
Internal Medicine in Tyler143 providers
Internal Medicine in Lubbock119 providers
Internal Medicine in Sugar Land108 providers
Internal Medicine in Arlington102 providers
Internal Medicine in Longview100 providers
Internal Medicine in Irving99 providers
Internal Medicine in Corpus Christi95 providers
Internal Medicine in Amarillo82 providers
Internal Medicine in Frisco81 providers
Internal Medicine in Harlingen73 providers
Internal Medicine in Webster70 providers
Internal Medicine in Odessa66 providers
Internal Medicine in Richardson62 providers
Internal Medicine in San Angelo61 providers
Internal Medicine in Round Rock61 providers

Internal Medicine providers in Texas

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. John Knight, M.D.
Huntsville, TX · $29 in drug and device payments (2025) · Telehealth · (936) 295-8000
Dr. Karin Olson, M.D.
Huntsville, TX · No drug or device payments recorded (2025) · (936) 439-4700
Dr. Mir Ali Khan, D.O.
Huntsville, TX · No drug or device payments recorded (2025) · (936) 294-0152
Dr. Murtaza Mahesri, MD
Huntsville, TX · $65 in drug and device payments (2025) · (936) 436-1786
Dr. Nabeel Khan, M.D.
Huntsville, TX · $115 in drug and device payments (2025) · (936) 291-8205
Dr. Peter Ang, M.D.
Huntsville, TX · No drug or device payments recorded (2025) · Telehealth · (936) 295-8000
Dr. Premswarup Immaraj, M.D.
Huntsville, TX · No drug or device payments recorded (2025) · (936) 291-3411
Dr. Shao-jen Chang, M.D.
Huntsville, TX · $469 in drug and device payments (2025) · Telehealth · (936) 291-2116
Dr. Sonal Patel, MD
Huntsville, TX · No drug or device payments recorded (2025) · (877) 832-2652
Dr. Trey Young, MD
Huntsville, TX · $901 in drug and device payments (2025) · Telehealth · (936) 500-9500
Dr. Alok Kushwaha, M.D.
Hurst, TX · $544 in drug and device payments (2025) · Telehealth · (817) 377-0143
Dr. Sandip Mehta, DO
Hurst, TX · $396 in drug and device payments (2025) · Telehealth · (817) 595-4949
Dr. Leonard Berry, MD
Hutchins, TX · No drug or device payments recorded (2025) · (972) 225-0081
Dr. Isaac Cha, MD
Hutto, TX · $98 in drug and device payments (2025) · Telehealth · (512) 509-9500
Dr. Minal Parikh, M.D.
Hutto, TX · No drug or device payments recorded (2025) · Telehealth · (512) 509-9550
Dr. Venkat Thadareddy, M.D
Hutto, TX · No drug or device payments recorded (2025) · (979) 279-3451
Dr. Adetoun Faniyan
Irving, TX · No drug or device payments recorded (2025) · (347) 355-3994
Dr. Ahmed Iqbal, M.D.
Irving, TX · $247 in drug and device payments (2025) · (972) 579-8338
Dr. Alfred Zevallos, M.D.
Irving, TX · $133 in drug and device payments (2025) · (214) 879-7800
Dr. Altamash Qureshi, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 457-0098
Dr. Amanda Muir, MD
Irving, TX · No drug or device payments recorded (2025) · Telehealth · (972) 556-1616
Dr. Anil Desai, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 385-9898
Dr. Archana Parikh, M.D.
Irving, TX · $564 in drug and device payments (2025) · Telehealth · (972) 406-1199
Dr. Ashley So, MD
Irving, TX · No drug or device payments recorded (2025) · Telehealth · (972) 556-1616
Dr. Asifa Ashraf, M.D.
Irving, TX · $24 in drug and device payments (2025) · (972) 990-8485
Dr. Barbara Onyia, MD
Irving, TX · No drug or device payments recorded (2025) · (844) 388-6541
Dr. Berto Zamora, M.D.
Irving, TX · $563 in drug and device payments (2025) · (214) 879-7800
Dr. Betty Grasty, MD
Irving, TX · No drug or device payments recorded (2025) · Telehealth · (469) 647-4004
Dr. Binita Kharel Nepal, M.D.
Irving, TX · $17 in drug and device payments (2025) · Telehealth · (972) 870-5511
Dr. Bishwas Upadhyay, MD
Irving, TX · $660 in drug and device payments (2025) · (469) 442-0202
Dr. Bradley Jones, M.D.
Irving, TX · $3,488 in drug and device payments (2025) · Telehealth · (972) 993-5080
Dr. Bryan Demarie, M.D.
Irving, TX · No drug or device payments recorded (2025) · (972) 556-1616
Dr. Callum Mccormick, M.S., D.O.
Irving, TX · $27 in drug and device payments (2025) · Telehealth · (972) 258-7499
Dr. Carl Middleton, MD
Irving, TX · $63 in drug and device payments (2025) · (214) 964-0600
Dr. Catherine Okoronkwo, M.D.
Irving, TX · $90 in drug and device payments (2025) · (972) 254-7272
Dr. Chuan Ho, MD, JD
Irving, TX · No drug or device payments recorded (2025) · Telehealth · (469) 647-4705
Dr. David Boltan, M.D.
Irving, TX · No drug or device payments recorded (2025) · Telehealth · (972) 579-8485
Dr. David Cantrell, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 579-8485
Dr. David Engleman, MD
Irving, TX · $15 in drug and device payments (2025) · (972) 258-7499
Dr. Deepika Reddy, M.D
Irving, TX · $24 in drug and device payments (2025) · (972) 579-8100
Dr. Deepti Kudyadi, MD
Irving, TX · $24 in drug and device payments (2025) · (972) 579-8485
Dr. Dipa Barot, MD
Irving, TX · $59 in drug and device payments (2025) · (972) 579-8485
Dr. Edwin Matthews, M.D.
Irving, TX · $202 in drug and device payments (2025) · (972) 556-1616
Dr. Elizabeth Dilg, M.D.
Irving, TX · No drug or device payments recorded (2025) · (469) 800-1050
Dr. Erik Grossman, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 579-8485
Dr. Evan Hundley, M.D.
Irving, TX · No drug or device payments recorded (2025) · (972) 990-8485
Dr. Faheem Haq, M.D.
Irving, TX · No drug or device payments recorded (2025) · (972) 579-8485
Dr. Franklin Heredia, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 870-5511
Dr. Gayathri Vontivillu, MD
Irving, TX · No drug or device payments recorded (2025) · (972) 579-8485
Dr. Grace Castro-andres, MD
Irving, TX · No drug or device payments recorded (2025) · (214) 266-3000

Conditions Internal Medicine providers in Texas commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Texas?

There are 9,182 Internal Medicine providers with active NPI records practicing in Texas, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in Texas offer telehealth?

Yes. 1,804 of the 9,182 Internal Medicine providers in Texas (about 20%) report offering telehealth services in CMS data.

Which cities in Texas have the most Internal Medicine providers?

Houston (1,496), Dallas (950), San Antonio (658) have the highest concentration of Internal Medicine providers in Texas.

How many Internal Medicine providers in Texas received drug or device company payments?

3,948 of 9,182 Internal Medicine providers in Texas (43%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in Texas treat?

Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Internal Medicine Doctors in Texas work in independent practices or large health systems?

Among 5,747 Internal Medicine Doctors in Texas enrolled in Medicare, 23% bill through a solo or small practice with fewer than 10 clinicians, 17% through a mid-size group of 10 to 99, and 60% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in Texas work at?

According to CMS facility affiliation records, the Texas hospitals where the most Internal Medicine Doctors hold privileges are Memorial Hermann Hospital System in Houston; Baylor University Medical Center in Dallas; Houston Methodist Hospital in Houston.

Related reading on HealthcareDiscovery.AI

Internal Medicine in all 50 states Search all 9,182 in the directory Ask Zach for help choosing

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in Texas? Get featured.