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Internal Medicine in Allen, Texas

Data updated monthly · Last refresh September 2026

33 Internal Medicine providers practice in Allen, and 36% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Allen

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. Ali Bahrani, MD
Allen, TX · No drug or device payments recorded (2025) · (972) 777-2966
Dr. Anand Prakash, M.D.
Allen, TX · $477 in drug and device payments (2025) · (727) 476-0429
Dr. Ankit Punatar, MD
Allen, TX · No drug or device payments recorded (2025) · (844) 941-3087
Dr. Feras Sawas, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Ghaith Ibrahim
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Jari Khan, M.D.
Allen, TX · No drug or device payments recorded (2025) · Telehealth · (972) 747-6042
Dr. Kathryn White, D.O.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Krista Volberding, D.O.
Allen, TX · No drug or device payments recorded (2025) · (469) 496-5699
Dr. Laila Yazdani, MD
Allen, TX · $682 in drug and device payments (2025) · (972) 747-6042
Dr. Le Giang, D.O.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Luan Pho, M.D.
Allen, TX · No drug or device payments recorded (2025) · Telehealth · (972) 747-4700
Dr. Luke Ouyang, MD
Allen, TX · $232 in drug and device payments (2025) · (469) 495-9030
Dr. Mark Doerner, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 908-3455
Dr. Mark Jennings, MD
Allen, TX · $728 in drug and device payments (2025) · (972) 747-6042
Dr. Meha Shah, MD
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Mike Chirachanchai, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Mohammad Zaman, MD
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Nadia Siddiqi, DO
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Olubukola Okoro, M.D
Allen, TX · $1,746 in drug and device payments (2025) · Telehealth · (972) 390-7667
Dr. Rajeshwar Kumar, MD
Allen, TX · No drug or device payments recorded (2025) · (972) 390-8722
Dr. Rakesh Patel, MD
Allen, TX · $184 in drug and device payments (2025) · (972) 747-6042
Dr. Robert Barnett, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 390-7667
Dr. Sameera Tallapureddy, MD
Allen, TX · $51,397 in drug and device payments (2025) · Telehealth · (972) 722-7860
Dr. Satish Bagdure, M.D.
Allen, TX · $758 in drug and device payments (2025) · (469) 649-9995
Dr. Sylaza Kantamneni, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042
Dr. Tamara Barsik, MD
Allen, TX · $586 in drug and device payments (2025) · Telehealth · (972) 229-0664
Dr. Teresa Rajala, M.D.
Allen, TX · No drug or device payments recorded (2025) · (469) 252-0022
Dr. Usman Zafar, MD
Allen, TX · $21 in drug and device payments (2025) · (972) 390-9000
Dr. Vanessa Buot, MD
Allen, TX · $16 in drug and device payments (2025) · (972) 747-6042
Dr. Vanita Bagdure, M.D.
Allen, TX · $212 in drug and device payments (2025) · Telehealth · (469) 649-9995
Dr. Wassim Radwan Abd El Wahab, MD
Allen, TX · No drug or device payments recorded (2025) · Telehealth · (972) 747-6042
Dr. William Beaujon, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 249-9783
Dr. Zaid Qaraghan, M.D.
Allen, TX · No drug or device payments recorded (2025) · (972) 747-6042

Conditions Internal Medicine providers in Allen, 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 Allen, Texas?

There are 33 Internal Medicine providers with active NPI records practicing in Allen, according to federal NPPES data refreshed monthly.

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

12 of 33 (36%) 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 Allen treat?

Internal Medicine providers in Allen 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 Allen 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.