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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. Maria Sarino, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 960-8008
Dr. Maria Vargas, MD
Houston, TX · No drug or device payments recorded (2025) · (281) 727-0332
Dr. Maria Visus, MD
Houston, TX · No drug or device payments recorded (2025) · (281) 333-9747
Dr. Maria Zarzour, M.D
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Marieberta Vidal, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-3753
Dr. Mariette Pierre, M.D.
Houston, TX · $1,137 in drug and device payments (2025) · Telehealth · (713) 655-0073
Dr. Marina George, MD
Houston, TX · $54 in drug and device payments (2025) · (713) 792-6161
Dr. Marina Ngassa Tayou, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Mari Sebastian Mendoza, MD
Houston, TX · $47 in drug and device payments (2025) · (281) 737-0587
Dr. Marissa Lee, DO
Houston, TX · $525 in drug and device payments (2025) · (713) 704-3961
Dr. Mark Farnie, M.D.
Houston, TX · $41 in drug and device payments (2025) · (832) 325-7100
Dr. Mark Hennessy, M.D.
Houston, TX · No drug or device payments recorded (2025) · (832) 541-8360
Dr. Mark Jenkins, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 348-4966
Dr. Mark Joseph Torres, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 566-4489
Dr. Maro Ohanian, DO
Houston, TX · $107 in drug and device payments (2025) · Telehealth · (713) 792-7305
Dr. Marsha Hughart, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 407-3000
Dr. Marta Davila, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Martin Perez, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 402-7824
Dr. Martin Poliak, MD
Houston, TX · $238 in drug and device payments (2025) · (713) 526-5511
Dr. Martin White, MD
Houston, TX · $657 in drug and device payments (2025) · (713) 526-5511
Dr. Maryam Buni, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Mary Haven Merkle, MD
Houston, TX · No drug or device payments recorded (2025) · (281) 440-2692
Dr. Mary Hernandez-zhang, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (281) 333-9747
Dr. Mary Shoemaker, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 242-2222
Dr. Mary Tarallo, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 798-1000
Dr. Maryum Zohair, MBBS
Houston, TX · $107 in drug and device payments (2025) · Telehealth · (281) 737-0570
Dr. Mashroor Jahan, DO
Houston, TX · No drug or device payments recorded (2025) · (713) 441-5114
Dr. Mathews Roy, MD
Houston, TX · $363 in drug and device payments (2025) · (713) 790-3311
Dr. Matthew Campbell, M.D.
Houston, TX · $7,243 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. Matthew Lenz, MD
Houston, TX · $1,136 in drug and device payments (2025) · Telehealth · (713) 526-5511
Dr. Matthew Novakovic, M.D.
Houston, TX · $18 in drug and device payments (2025) · (713) 832-8890
Dr. Matthew Segar, MD
Houston, TX · $7,224 in drug and device payments (2025) · (713) 790-9401
Dr. Matthew Yang
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 798-2500
Dr. Maureen Kimani, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 873-3560
Dr. Maya Sarihan, MD
Houston, TX · $239 in drug and device payments (2025) · (713) 442-2400
Dr. May Daher, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Mazen Aiche, MD
Houston, TX · $40 in drug and device payments (2025) · (832) 325-7222
Dr. Meaghan Martinez-palmer
Houston, TX · No drug or device payments recorded (2025) · (832) 355-2666
Dr. Meera Khosla, MD
Houston, TX · $25 in drug and device payments (2025) · (713) 535-3972
Dr. Megan Maddox, M.D.
Houston, TX · $2,742 in drug and device payments (2025) · Telehealth · (346) 356-7000
Dr. Mehveen Merchant, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 873-4665
Dr. Melanie Kiener, MD
Houston, TX · No drug or device payments recorded (2025) · (173) 798-1000
Dr. Melanie Springer Tollett, MD
Houston, TX · No drug or device payments recorded (2025) · (281) 252-9993
Dr. Melina Awar, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 441-6722
Dr. Melissa Amador, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 330-0766
Dr. Melissa Purgason
Houston, TX · No drug or device payments recorded (2025) · (713) 798-0190
Dr. Melvin Russell, D.O.
Houston, TX · No drug or device payments recorded (2025) · (915) 842-9705
Dr. Mercy Misoi, MD
Houston, TX · $80 in drug and device payments (2025) · (713) 792-6161
Dr. Meroe Morse, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 566-3377
Dr. Metty Dessalegn
Houston, TX · No drug or device payments recorded (2025) · (281) 558-3444

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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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. Are you a Internal Medicine in Texas? Get featured.