HealthcareDiscovery.AI / Doctors / California / Colton / Internal Medicine

Internal Medicine in Colton, California

Data updated monthly · Last refresh September 2026

68 Internal Medicine providers practice in Colton, and 47% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Colton

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. Rachel Sergah
Colton, CA · $89 in drug and device payments (2025) · (877) 873-2762
Dr. Raffi Gharakhanian, DO
Colton, CA · $372 in drug and device payments (2025) · (909) 580-6343
Dr. Ramiz Alchi
Colton, CA · No drug or device payments recorded (2025) · (619) 873-8464
Dr. Robert Nguyen, MD
Colton, CA · $429 in drug and device payments (2025) · (909) 580-1000
Dr. Roy Lung, MD
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Sarkis Arabian, DO
Colton, CA · $493 in drug and device payments (2025) · (909) 580-1000
Dr. Sean Shargh, D.O.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-6266
Dr. Shahrukh Mohsin
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Shawn Koh, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Sondos Badran
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Sunita Hassamal, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Sylvia Li, DO
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Terrence Tan, D.O.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-6275
Dr. Tiffany Chang, DO
Colton, CA · No drug or device payments recorded (2025) · (909) 580-6343
Dr. Timothy Yaopruke, DO
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Travis Martinez, MD
Colton, CA · $415 in drug and device payments (2025) · (909) 580-1000
Dr. Veerpal Sond
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Yanfei Chen, MD
Colton, CA · $57 in drug and device payments (2025) · (909) 580-1000

Conditions Internal Medicine providers in Colton, California 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 Colton, California?

There are 68 Internal Medicine providers with active NPI records practicing in Colton, according to federal NPPES data refreshed monthly.

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

32 of 68 (47%) 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 Colton treat?

Internal Medicine providers in Colton 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 Colton Internal Medicine across California

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.