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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. Raeye Daniel, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-2324
Dr. Rafay Abbasi, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (732) 501-5497
Dr. Raffi Ghurabi, DO
Los Angeles, CA · $47 in drug and device payments (2025) · (310) 200-4367
Dr. Rahnana Sachs, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 652-4800
Dr. Rahul Batra, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Raj Aurora, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4516
Dr. Rajendra Prasad, M.D.
Los Angeles, CA · $360 in drug and device payments (2025) · Telehealth · (310) 237-0023
Dr. Rajsavi Anand, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (424) 522-7234
Dr. Ramesh Bhakta, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-8105
Dr. Ramez Ethnasios, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (800) 954-8000
Dr. Raphael Darvish, M.D.
Los Angeles, CA · $678 in drug and device payments (2025) · Telehealth · (310) 826-2555
Dr. Raphael Toutounjian, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-6830
Dr. Rasham Mittal, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (347) 822-8987
Dr. Rashmi Singh
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 745-0840
Dr. Raymond Doh, MD
Los Angeles, CA · $21 in drug and device payments (2025) · Telehealth · (323) 783-4011
Dr. Raymond Kempff, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-6734
Dr. Raymond Waliany, M.D
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 743-9000
Dr. Rebecca Crane, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Rebecca Lee
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-6484
Dr. Rebecca Tsevat, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-6232
Dr. Reeni Pandya
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Rene Eapen
Los Angeles, CA · $18 in drug and device payments (2025) · (323) 541-1411
Dr. Rhanika Alexandra Neuda, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 208-7777
Dr. Richard Banks, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 413-3000
Dr. Richard Baum, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 936-0012
Dr. Richard Buyalos, MD
Los Angeles, CA · $166 in drug and device payments (2025) · (310) 825-0631
Dr. Richard Leuchter, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Richard Mehlman, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Richard Murphy, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Richard Petrucci, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 444-9977
Dr. Ricky Menor, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 857-2000
Dr. Ricky Onofre-vasquez, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 572-6225
Dr. Rikki Mullen, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 319-4141
Dr. Rita Rossi-foulkes
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-2811
Dr. Rita Singhal, MD, MPH
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 497-1728
Dr. Robert Arieli
Los Angeles, CA · $237 in drug and device payments (2025) · Telehealth · (323) 987-1362
Dr. Robert Blackman, MD
Los Angeles, CA · $31 in drug and device payments (2025) · (213) 623-2225
Dr. Robert Goodman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-4683
Dr. Robert Gromis, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 470-1333
Dr. Robert Kakehashi, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (844) 644-4325
Dr. Robert Kwaan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (562) 208-7573
Dr. Robert Lemaile-williams, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 481-1241
Dr. Robert Lifson, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 732-6999
Dr. Robert Nisenbaum, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 553-7151
Dr. Roberto Mempin, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Roberto Vargas, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6301
Dr. Robert Oye, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6301
Dr. Robert Saed, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 634-3850
Dr. Robert Shapiro, M.D.
Los Angeles, CA · $150 in drug and device payments (2025) · (310) 215-6020
Dr. Robert Swinney
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-2170

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.