HealthcareDiscovery.AI / Doctors / California / Santa Monica / Gastroenterology

Gastroenterology in Santa Monica, California

Data updated monthly · Last refresh September 2026

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

Gastroenterology providers in Santa Monica

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. Alireza Sedarat, MD
Santa Monica, CA · $21,554 in drug and device payments (2025) · Telehealth · (310) 582-6240
Dr. Benjamin Nulsen
Santa Monica, CA · $39 in drug and device payments (2025) · Telehealth · (310) 582-6240
Dr. Carl Nordstrom, M.D.
Santa Monica, CA · $141 in drug and device payments (2025) · Telehealth · (310) 582-6240
Dr. Charles Frankel, M.D.
Santa Monica, CA · $287 in drug and device payments (2025) · (310) 453-1871
Dr. Claudia Sanmiguel, M.D.
Santa Monica, CA · $2,299 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Daisy Lankarani, M.D.
Santa Monica, CA · $3,859 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Danice Hertz, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 453-1871
Dr. David Yamini, M.D.
Santa Monica, CA · $1,669 in drug and device payments (2025) · Telehealth · (310) 285-3005
Dr. James Sul, MD
Santa Monica, CA · $2,717 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Jerome Helman, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-7877
Dr. Kamyar Shahedi, M.D.
Santa Monica, CA · $1,618 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Lenna Martyak, M.D.
Santa Monica, CA · $2,301 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Louis Ravitz, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-9311
Dr. Lynn Connolly, M.D.
Santa Monica, CA · $125 in drug and device payments (2025) · Telehealth · (310) 828-7172
Dr. Marc Harwitt, M.D.
Santa Monica, CA · $28 in drug and device payments (2025) · (310) 829-6789
Dr. Marc Wishingrad, MD
Santa Monica, CA · $94 in drug and device payments (2025) · Telehealth · (310) 453-1871
Dr. Martha Hierro, M.D.
Santa Monica, CA · $794 in drug and device payments (2025) · Telehealth · (310) 471-9917
Dr. Nathan Elson, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-9495
Dr. Parviz Afshani, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-6789
Dr. Rahul Dixit, M.D.
Santa Monica, CA · $6,852 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Richard Corlin, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-6789
Dr. Rudolph Bedford, M.D.
Santa Monica, CA · $4,981 in drug and device payments (2025) · Telehealth · (310) 829-6789
Dr. Tram Tran, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Uzoamaka Dike, M.D.
Santa Monica, CA · $125 in drug and device payments (2025) · Telehealth · (310) 453-1871
Dr. Vivy Cusumano
Santa Monica, CA · $58 in drug and device payments (2025) · Telehealth · (310) 582-6240
Dr. William Katkov, M.D.
Santa Monica, CA · $783 in drug and device payments (2025) · Telehealth · (310) 453-1871

Conditions Gastroenterology providers in Santa Monica, 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 Santa Monica, California?

There are 26 Gastroenterology providers with active NPI records practicing in Santa Monica, according to federal NPPES data refreshed monthly.

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

19 of 26 (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 Santa Monica treat?

Gastroenterology providers in Santa Monica 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 Santa Monica 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.