HealthcareDiscovery.AI / Doctors / California / Torrance / Gastroenterology

Gastroenterology in Torrance, California

Data updated monthly · Last refresh September 2026

44 Gastroenterology providers practice in Torrance, and 73% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Gastroenterology providers in Torrance

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. Alexander Nguyen, MD
Torrance, CA · $2,142 in drug and device payments (2025) · (310) 530-8013
Dr. Anil Dev, M.D.
Torrance, CA · $509 in drug and device payments (2025) · (310) 222-2475
Dr. Azam Riyaz, MD
Torrance, CA · $334 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Bao Sean Nguyen, MD
Torrance, CA · $271 in drug and device payments (2025) · Telehealth · (310) 530-8013
Dr. Cameron Sikavi, MD
Torrance, CA · $1,788 in drug and device payments (2025) · Telehealth · (310) 534-8200
Dr. Chirag Patel, MD
Torrance, CA · $1,448 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Chun Hsu, MD
Torrance, CA · $310 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Daniel Cho, M.D.
Torrance, CA · $1,945 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Daniel Shue, MD
Torrance, CA · $760 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. David Chung, MD
Torrance, CA · $1,498 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Didi Mwengela, M.D.
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 530-8013
Dr. Edward Piken, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 539-2055
Dr. Ellie Chen, MD
Torrance, CA · $377 in drug and device payments (2025) · Telehealth · (310) 530-8013
Dr. Gloria Sze, M.D.
Torrance, CA · $717 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Henry Lam, DO
Torrance, CA · $933 in drug and device payments (2025) · (424) 306-4000
Dr. Howard Resin, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 539-2055
Dr. James Sattler, MD
Torrance, CA · $1,511 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Jennifer Kolb, MD
Torrance, CA · $6,774 in drug and device payments (2025) · Telehealth · (310) 530-8013
Dr. Jerome Cohen, M.D.
Torrance, CA · $1,847 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Judy Law-torok, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 698-6344
Dr. Karl Fukunaga, MD
Torrance, CA · $868 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Kelsey Collins, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 214-7236
Dr. Kenneth Holt, MD
Torrance, CA · $23 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Linda Hou, MD
Torrance, CA · $124 in drug and device payments (2025) · (310) 222-2477
Dr. Mark Takemura, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 214-7236
Dr. Masaharu Osato, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 534-8200
Dr. Melissa Munsell, M.D.
Torrance, CA · $945 in drug and device payments (2025) · Telehealth · (310) 530-8013
Dr. Michael Bernstein, MD
Torrance, CA · $902 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Minh Nguyen, M.D.
Torrance, CA · $1,935 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Nazir Khaja, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 370-4660
Dr. Nimah Ather
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 530-8013
Dr. Norman Panitch, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 539-2055
Dr. Oren Zaidel, M.D.
Torrance, CA · $1,000 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Robert Webman, M.D
Torrance, CA · $302 in drug and device payments (2025) · (310) 542-5800
Dr. Sara Kranke
Torrance, CA · $42,044 in drug and device payments (2025) · (310) 570-9618
Dr. Shahina Hakim, MD
Torrance, CA · $258 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Sonya Dasharathy
Torrance, CA · $177 in drug and device payments (2025) · Telehealth · (310) 530-8013
Dr. Steven Weinstock, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 214-7236
Dr. Susanna Chan, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 539-2055
Dr. Thai Ha, MD
Torrance, CA · $709 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Timothy Tran, MD
Torrance, CA · $693 in drug and device payments (2025) · Telehealth · (310) 375-1246
Dr. Tonny Lee, M.D.
Torrance, CA · $18,570 in drug and device payments (2025) · Telehealth · (310) 539-2055
Dr. Viktor Eysselein, M.D.
Torrance, CA · $506 in drug and device payments (2025) · (310) 222-5101
Dr. Wael El-nachef, M.D.
Torrance, CA · $203 in drug and device payments (2025) · Telehealth · (310) 222-2409

Conditions Gastroenterology providers in Torrance, California commonly treat

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

Common questions

How many Gastroenterology providers are in Torrance, California?

There are 44 Gastroenterology providers with active NPI records practicing in Torrance, according to federal NPPES data refreshed monthly.

How many Gastroenterology providers in Torrance received drug or device company payments?

32 of 44 (73%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Gastroenterology providers in Torrance treat?

Gastroenterology providers in Torrance commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease 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 Torrance Gastroenterology across California

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.