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Internal Medicine Doctors in California

Data updated monthly · Last refresh October 2026

17,715 Internal Medicine providers practice in California, including 4,245 (24%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

17,715providers
4,245telehealth
Los Angelestop city

Internal Medicine by city in California

Choose a city to see providers there.

Internal Medicine in Los Angeles1,417 providers
Internal Medicine in San Francisco1,322 providers
Internal Medicine in San Diego970 providers
Internal Medicine in Sacramento602 providers
Internal Medicine in Oakland434 providers
Internal Medicine in San Jose433 providers
Internal Medicine in Stanford383 providers
Internal Medicine in Fresno339 providers
Internal Medicine in Torrance230 providers
Internal Medicine in Long Beach225 providers
Internal Medicine in Bakersfield210 providers
Internal Medicine in Loma Linda209 providers
Internal Medicine in Palo Alto189 providers
Internal Medicine in Anaheim188 providers
Internal Medicine in Orange188 providers
Internal Medicine in Riverside188 providers
Internal Medicine in Walnut Creek184 providers
Internal Medicine in Santa Monica170 providers
Internal Medicine in La Jolla161 providers
Internal Medicine in Roseville159 providers
Internal Medicine in Irvine155 providers
Internal Medicine in Beverly Hills152 providers
Internal Medicine in Santa Clara142 providers
Internal Medicine in Pasadena138 providers

Internal Medicine providers in California

Listed by city, largest first. 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. Thai Nguyen, MD
Redding, CA · $31 in drug and device payments (2025) · (573) 884-1606
Dr. Than Aung, MD
Redding, CA · $1,484 in drug and device payments (2025) · Telehealth · (530) 225-8775
Dr. Thiruvoipati Nandakumar, M.D.
Redding, CA · $91 in drug and device payments (2025) · (530) 241-1473
Dr. Victor Sabo, MD
Redding, CA · No drug or device payments recorded (2025) · (760) 963-4292
Dr. Vladimir Medina, MD
Redding, CA · $14 in drug and device payments (2025) · Telehealth · (530) 242-3590
Dr. William Devlaming, M.D.
Redding, CA · No drug or device payments recorded (2025) · (530) 244-1692
Dr. Adnan Mohsin, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 794-3682
Dr. Akhil Khan, MD
Redlands, CA · $134 in drug and device payments (2025) · (909) 793-3311
Dr. Amy Blackmon, MD
Redlands, CA · $176 in drug and device payments (2025) · Telehealth · (909) 794-3682
Dr. Aneeta Kiran, MD
Redlands, CA · $127 in drug and device payments (2025) · (909) 427-5000
Dr. Ann Wang, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 335-5500
Dr. Archis Desai, M.D.
Redlands, CA · $877 in drug and device payments (2025) · Telehealth · (909) 966-5500
Dr. Arnon Desai, M.D.
Redlands, CA · $1,415 in drug and device payments (2025) · Telehealth · (909) 966-5500
Dr. Balram Khehra, MD
Redlands, CA · $1,631 in drug and device payments (2025) · Telehealth · (909) 850-4211
Dr. Casey Kennedy, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Celise Nardes Ferreira, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3421
Dr. Charles Chen, M.D.
Redlands, CA · $25 in drug and device payments (2025) · (909) 793-3311
Dr. Cheng Wang, M.D.
Redlands, CA · $18 in drug and device payments (2025) · (909) 793-2363
Dr. Christopher Ng, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Ei Ei Thu, MD
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 793-3311
Dr. Giorgio Roveran, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Hashem Lababidi, DO
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 794-3682
Dr. Isabella Possagnoli, MD
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 440-6009
Dr. Isaiah Horton, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 335-4102
Dr. Jared Dang, D.O.
Redlands, CA · $26 in drug and device payments (2025) · (909) 793-3311
Dr. Jasninder Dhaliwal, MD
Redlands, CA · $19 in drug and device payments (2025) · (909) 793-3311
Dr. Julia Suh
Redlands, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Julie Smithwick
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Jun Chiong, M.D., M.P.H.
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 475-7371
Dr. Junku Kang, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Katrina Platt, D.O.
Redlands, CA · $832 in drug and device payments (2025) · (909) 307-0176
Dr. Kunal Patel, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Lakshita Gupta
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 793-3311
Dr. Maher Rezkalla, M.D
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Mamdooh Gayid, MD
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 793-3311
Dr. Michael Wilson, M.D.
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 794-3682
Dr. Mina Ragheb, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 786-0725
Dr. Mohamed Nassar
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 793-0323
Dr. Mohammad Osmani, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 307-2636
Dr. Mohammad Pour, MD
Redlands, CA · $23 in drug and device payments (2025) · (913) 222-9325
Dr. Mohammadvahid Jorat, MD
Redlands, CA · $54 in drug and device payments (2025) · (909) 335-4102
Dr. Mohmad Shaikh
Redlands, CA · No drug or device payments recorded (2025) · (909) 335-5500
Dr. Monroe Seiberling, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-3311
Dr. Moses Park, M.D.
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (909) 793-3311
Dr. Mouna Haddad-wilson, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 794-3682
Dr. Nancy Lin, M.D.
Redlands, CA · No drug or device payments recorded (2025) · Telehealth · (626) 215-6979
Dr. Prachi Patel, M.B.B.S
Redlands, CA · No drug or device payments recorded (2025) · (909) 335-4102
Dr. Priya Malik, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 794-3682
Dr. Raed El Hajjaoui, M.D.
Redlands, CA · No drug or device payments recorded (2025) · (909) 206-4495
Dr. Rafael Villarosa, MD
Redlands, CA · No drug or device payments recorded (2025) · (909) 793-2226

Conditions Internal Medicine providers in 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 California?

There are 17,715 Internal Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in California offer telehealth?

Yes. 4,245 of the 17,715 Internal Medicine providers in California (about 24%) report offering telehealth services in CMS data.

Which cities in California have the most Internal Medicine providers?

Los Angeles (1,417), San Francisco (1,322), San Diego (970) have the highest concentration of Internal Medicine providers in California.

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

5,614 of 17,715 Internal Medicine providers in California (32%) 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 California treat?

Internal Medicine providers 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 counts and profiles 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.

Do most Internal Medicine Doctors in California work in independent practices or large health systems?

Among 10,847 Internal Medicine Doctors in California enrolled in Medicare, 20% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in California work at?

According to CMS facility affiliation records, the California hospitals where the most Internal Medicine Doctors hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.

Related reading on HealthcareDiscovery.AI

Internal Medicine in all 50 states Search all 17,715 in the directory Ask Zach for help choosing

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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. Are you a Internal Medicine in California? Get featured.