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Radiation Oncology in Houston, Texas

Data updated monthly · Last refresh September 2026

156 Radiation Oncology providers practice in Houston, and 45% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Radiation Oncology 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. Emma Holliday, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Enoch Chang, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Eric Strom, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Ethan Ludmir, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Eugene Koay, M.D., PH.D.
Houston, TX · $204 in drug and device payments (2025) · Telehealth · (817) 805-2839
Dr. Fumiko Chino, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Gary Gunn, MD
Houston, TX · $3,902 in drug and device payments (2025) · (713) 792-6161
Dr. George Perkins, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Gohar Manzar, MD PHD
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Grace Smith, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Gregory Chronowski, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Henry Mok, M.D., PH.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-5905
Dr. Howard Lewis, M.D.
Houston, TX · No drug or device payments recorded (2025) · (214) 966-4582
Dr. Hsin Lu, M.D.
Houston, TX · No drug or device payments recorded (2025) · (832) 355-7118
Dr. Isidora Arzu, M.D. PHD
Houston, TX · $80 in drug and device payments (2025) · (713) 792-6161
Dr. James Welsh, MD
Houston, TX · $339 in drug and device payments (2025) · (713) 792-6161
Dr. Jay Paul Reddy, MD
Houston, TX · $531 in drug and device payments (2025) · (713) 792-6161
Dr. Jie Jane Chen
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Jillian Gunther, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Jing Li
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Joe Chang, M.D., PHD
Houston, TX · $191 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. John Bowers, D.O.
Houston, TX · $415 in drug and device payments (2025) · Telehealth · (713) 792-2991
Dr. Joseph Arko, M.D.
Houston, TX · No drug or device payments recorded (2025) · (214) 918-5517
Dr. Joseph Herman, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Julianna Bronk, MD, PHD
Houston, TX · $158 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. Karen Hoffman, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 563-8495
Dr. Karine Al Feghali
Houston, TX · No drug or device payments recorded (2025) · (713) 563-0188
Dr. Kathleen Shadle, MD
Houston, TX · $223 in drug and device payments (2025) · (713) 441-4800
Dr. Kirk Kanady, MD
Houston, TX · $294 in drug and device payments (2025) · Telehealth · (281) 377-7555
Dr. Krishnan Patel, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Kristina Woodhouse, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Krystal Morales-rivera
Houston, TX · No drug or device payments recorded (2025) · (832) 355-7470
Dr. Larry Carpenter, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 526-4243
Dr. Lauren Colbert, MD, MSCR
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Lauren Mayo, M.D.
Houston, TX · $190 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. Liam Spurr, MD
Houston, TX · $24 in drug and device payments (2025) · (877) 632-6789
Dr. Lilie Lin, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Marc Delclos, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Mark Amsbaugh, M.D.
Houston, TX · $560 in drug and device payments (2025) · Telehealth · (713) 486-8000
Dr. Mark D'andrea, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 474-1414
Dr. Martin Tom, M.D
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Mary Dean, M.D.
Houston, TX · No drug or device payments recorded (2025) · (713) 442-0000
Dr. Mary Frances Mcaleer, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Matthew Ning, MD, MPH
Houston, TX · $333 in drug and device payments (2025) · Telehealth · (713) 792-6161
Dr. Michael O'reilly, M.D.
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (713) 792-6161
Dr. Michael Rooney, MD
Houston, TX · No drug or device payments recorded (2025) · Telehealth · (630) 386-0088
Dr. Michael Stauder, MD
Houston, TX · No drug or device payments recorded (2025) · (713) 792-6161
Dr. Mi Kyung Ko, M.D.
Houston, TX · $122 in drug and device payments (2025) · (713) 442-0000
Dr. Mohammed Aldehaim, MD, FRCPC
Houston, TX · No drug or device payments recorded (2025) · (877) 632-6789
Dr. Mona Sanghani, M.D.
Houston, TX · $162 in drug and device payments (2025) · (713) 442-0000

Common questions

How many Radiation Oncology providers are in Houston, Texas?

There are 156 Radiation Oncology providers with active NPI records practicing in Houston, according to federal NPPES data refreshed monthly.

How many Radiation Oncology providers in Houston received drug or device company payments?

70 of 156 (45%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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 Radiation Oncology across Texas

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.