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Internal Medicine in Houston, Texas

Data updated monthly · Last refresh September 2026

1,496 Internal Medicine providers practice in Houston, and 44% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Houston

Listed alphabetically. 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. Tasneam Shagroni
Houston, TX · No drug or device payments recorded (2025) · (713) 798-4951
Dr. Tasneem Yakoob, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-4000
Dr. Taso Mougouris, M.D.
Houston, TX · $204 in drug and device payments (2025) · (713) 960-8008
Dr. Tate Truly, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 873-8890
Dr. Taylor Nguyen, MD
Houston, TX · No drug or device payments recorded (2025) · (832) 355-2666
Dr. Tejal Shah, M.D.
Houston, TX · $839 in drug and device payments (2025) · (713) 662-2777
Dr. Tejpal Grover, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 461-2915
Dr. Teny Mathew John, M.D.
Houston, TX · $17 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. Terence Holmes, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 650-1900
Dr. Teresa Guerrero, M.D.
Houston, TX · $688 in drug and device payments (2025) · (713) 299-7050
Dr. Terri Johnson Wimbley, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 960-8008
Dr. Terry Rice, MD
Houston, TX · $30 in drug and device payments (2025) · (713) 877-1805
Dr. Terry Taylor, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Thaddaeus May, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 832-8890
Dr. Thai Bui, M.D.
Houston, TX · $20 in drug and device payments (2025) · (832) 522-1000
Dr. Thai Dang, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-0000
Dr. Thandavarajan Gopalakrishnan, M.D.
Houston, TX · $173 in drug and device payments (2025) · (281) 484-3500
Dr. Thanh Do, M.D.
Houston, TX · $221 in drug and device payments (2025) · (281) 496-1010
Dr. Thanh Pham, M.D.
Houston, TX · $142 in drug and device payments (2025) · (281) 332-3001
Dr. Theodore Piliszek, M.D.
Houston, TX · No drug or device payments recorded (2025) · (281) 469-4156
Dr. Theresa Nguyen, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 798-4951
Dr. Theresa Vicroy, M.D.
Houston, TX · $836 in drug and device payments (2025) · Telehealth · (281) 657-0770
Dr. Therese Sison
Houston, TX · $1,004 in drug and device payments (2025) · Telehealth · (713) 363-9830
Dr. Thinh Nguyen, M.D.
Houston, TX · $117 in drug and device payments (2025) · (281) 784-1088
Dr. Thomas Baxter, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 441-1006
Dr. Thomas Doneker, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-2400
Dr. Thomas Falvey, M.D.
Houston, TX · No drug or device payments recorded (2025) · (281) 272-6277
Dr. Thomas Houghton, DO
Houston, TX · $726 in drug and device payments (2025) · (713) 500-3267
Dr. Thomas Knight, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 441-0006
Dr. Thomas Le, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 995-8600
Dr. Thomas Lux, M.D.
Houston, TX · $439 in drug and device payments (2025) · (713) 526-5511
Dr. Thomas Williamson, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-3222
Dr. Thu Nguyen, D.O.
Houston, TX · $460 in drug and device payments (2025) · (713) 464-9939
Dr. Tiffany Lock
Houston, TX · $22 in drug and device payments (2025) · (823) 355-2666
Dr. Timothy Tang, MD
Houston, TX · $158 in drug and device payments (2025) · (281) 858-4888
Dr. Timothy Timmons, D.O.
Houston, TX · No drug or device payments recorded (2025) · (917) 412-0808
Dr. Tin-yun Tang, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Tiruchengodu Venkatachalapathi, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 960-8008
Dr. Titilola Adio, M.D.
Houston, TX · No drug or device payments recorded (2025) · (832) 355-1000
Dr. Toan Nguyen, MD
Houston, TX · $19 in drug and device payments (2025) · (281) 726-8656
Dr. Tochi Unegbu-ogbonna
Houston, TX · No drug or device payments recorded (2025) · (713) 500-5154
Dr. Todd Schlegel, M.D.
Houston, TX · No drug or device payments recorded (2025) · (281) 335-8818
Dr. Toicha Vincent, MD
Houston, TX · $32 in drug and device payments (2025) · (713) 442-0000
Dr. Tomas Rios, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (323) 239-2308
Dr. Toni Williams Keaton, MD
Houston, TX · $348 in drug and device payments (2025) · (512) 730-3056
Dr. Tony Lin, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-0000
Dr. Tracy Carter, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-1500
Dr. Tram Ho, MD
Houston, TX · $1,069 in drug and device payments (2025) · Telehealth · (713) 457-5500
Dr. Trang Bui, M.D.
Houston, TX · $112 in drug and device payments (2025) · (713) 662-2777
Dr. Trela Parker, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 442-0000

Conditions Internal Medicine providers in Houston, 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 Houston, Texas?

There are 1,496 Internal Medicine providers with active NPI records practicing in Houston, according to federal NPPES data refreshed monthly.

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

655 of 1,496 (44%) 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 Houston treat?

Internal Medicine providers in Houston 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 records 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.

All specialties in Houston Internal Medicine across Texas

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.