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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. Nina Park, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-1555
Dr. Oliver Neil Refugio, M.D., M.P.H.
Sylmar, CA · $656 in drug and device payments (2025) · (747) 210-3000
Dr. Peter Balingit, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Raveena Singh Basra, MD
Sylmar, CA · $530 in drug and device payments (2025) · (818) 364-1555
Dr. Richard Tennant, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Robert Titcher, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 367-1012
Dr. Sally Leong, MD
Sylmar, CA · $1,296 in drug and device payments (2025) · (747) 210-3540
Dr. Salvador Hernandez, MD
Sylmar, CA · No drug or device payments recorded (2025) · (747) 210-3205
Dr. Serene Tareen, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · Telehealth · (818) 364-3205
Dr. Simon Chang, DO
Sylmar, CA · No drug or device payments recorded (2025) · (747) 210-3205
Dr. Soma Wali
Sylmar, CA · $10,590 in drug and device payments (2025) · (818) 364-3205
Dr. Srisook Boonsue, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Stephanie Wang, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Sunny Lin, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3632
Dr. Sural Shah, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (747) 210-3205
Dr. Surbhi Bansil
Sylmar, CA · No drug or device payments recorded (2025) · (714) 928-5551
Dr. Sydnie Ann Espiritu, MD
Sylmar, CA · No drug or device payments recorded (2025) · (747) 210-3205
Dr. Tamara Modilevsky, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Thomas Kalinoski, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-1555
Dr. Tiffany Maggi-maidinetti, MD
Sylmar, CA · $22 in drug and device payments (2025) · (747) 210-3205
Dr. Vena Ricketts, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3107
Dr. Vi Nguyen, MD
Sylmar, CA · No drug or device payments recorded (2025) · (747) 210-8000
Dr. Vinhfield Ta, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-4573
Dr. William Loos, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3035
Dr. Yuvrajsinh Chudasama, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Azita Fakheri, MD
Tarzana, CA · $1,617 in drug and device payments (2025) · (818) 343-0101
Dr. Boules Salib, MD, MPH
Tarzana, CA · $365 in drug and device payments (2025) · Telehealth · (424) 314-0270
Dr. Darryl Ballin, M.D.,INC
Tarzana, CA · $230 in drug and device payments (2025) · Telehealth · (818) 708-4848
Dr. David Abrams, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 385-1018
Dr. David Grossman, M.D.
Tarzana, CA · $171 in drug and device payments (2025) · (818) 908-8048
Dr. Donald Luber, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 346-3123
Dr. Eesha Chakravartty, MD
Tarzana, CA · No drug or device payments recorded (2025) · Telehealth · (424) 315-0285
Dr. Eric Abkian, MD
Tarzana, CA · $75 in drug and device payments (2025) · (310) 423-5252
Dr. Gary Tanouye, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 996-5700
Dr. Gerald Kovar, M.D.
Tarzana, CA · $217 in drug and device payments (2025) · (818) 774-9225
Dr. Janna Oganessian, M.D.
Tarzana, CA · $494 in drug and device payments (2025) · (818) 758-8282
Dr. Jean Miyashita, MD
Tarzana, CA · No drug or device payments recorded (2025) · (818) 343-1700
Dr. Jeffrey Galpin, M.D.
Tarzana, CA · $28 in drug and device payments (2025) · Telehealth · (818) 344-6111
Dr. Jeffrey Salberg, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · Telehealth · (818) 996-5700
Dr. Jody Levy, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · Telehealth · (818) 466-7700
Dr. Joel Sach, M.D.
Tarzana, CA · $4,555 in drug and device payments (2025) · Telehealth · (818) 708-6070
Dr. Kenneth Nyman, M.D.
Tarzana, CA · $233 in drug and device payments (2025) · (818) 344-1001
Dr. Kevin Berger, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 793-7195
Dr. Khadir Kakal, MD
Tarzana, CA · $731 in drug and device payments (2025) · Telehealth · (818) 609-7536
Dr. Kioumars Bolourian Kashi, MD
Tarzana, CA · No drug or device payments recorded (2025) · (818) 823-8911
Dr. Lawrence May, M.D.
Tarzana, CA · $205 in drug and device payments (2025) · (818) 344-0200
Dr. Mehul Thakkar, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · Telehealth · (818) 774-3838
Dr. Melvyn Werbach, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 996-4727
Dr. Michael Elist
Tarzana, CA · $52,671 in drug and device payments (2025) · (818) 881-5656
Dr. Michael Hirt, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 345-2828

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.