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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. Richard Gonzales, MD
Buena Park, CA · No drug or device payments recorded (2025) · (714) 821-8588
Dr. Richard Han, M.D.
Buena Park, CA · $3,105 in drug and device payments (2025) · (714) 523-7575
Dr. Soledad Lee, MD
Buena Park, CA · $1,040 in drug and device payments (2025) · Telehealth · (714) 828-8400
Dr. Soo Kang
Buena Park, CA · $1,860 in drug and device payments (2025) · (147) 526-7787
Dr. Sung Hyun Kim, M.D
Buena Park, CA · No drug or device payments recorded (2025) · Telehealth · (714) 562-9139
Dr. Tai-won Kim, MD
Buena Park, CA · No drug or device payments recorded (2025) · (714) 503-6550
Dr. Victor Caluya, MD
Buena Park, CA · No drug or device payments recorded (2025) · Telehealth · (714) 522-4009
Dr. Abigail Maller, M.D.
Burbank, CA · $183 in drug and device payments (2025) · Telehealth · (818) 843-9015
Dr. A Kolluru, M.D.
Burbank, CA · $145 in drug and device payments (2025) · Telehealth · (818) 557-2671
Dr. Alina Beaton, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 843-6611
Dr. Aloyisus Tsang, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Alwin Lewis, MD
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 955-5773
Dr. Angela Adelman, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 846-7440
Dr. Byron Flores, M.D.
Burbank, CA · $225 in drug and device payments (2025) · (213) 215-1506
Dr. Cecelia Madrid, M.D.
Burbank, CA · $115 in drug and device payments (2025) · (818) 567-6550
Dr. Dianna Ferguson, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 556-2700
Dr. Dion Banoian, MD
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 246-8000
Dr. Dora So, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Dovber Hecht, MD
Burbank, CA · $17 in drug and device payments (2025) · (323) 405-9322
Dr. Duc Tran, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 556-3451
Dr. Edmond Melikterminas, MD
Burbank, CA · $206 in drug and device payments (2025) · Telehealth · (818) 331-7687
Dr. Elijah Wasson, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (855) 723-3005
Dr. Elizabeth Leon, FNP-C
Burbank, CA · $842 in drug and device payments (2025) · (818) 842-6400
Dr. Eric Feit, M.D.
Burbank, CA · $334 in drug and device payments (2025) · (818) 845-9758
Dr. Eric Lu, MD
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 275-7554
Dr. Francisco Carbon, MD
Burbank, CA · $19 in drug and device payments (2025) · (818) 842-5853
Dr. Garo Terzian, MD
Burbank, CA · $347 in drug and device payments (2025) · Telehealth · (818) 848-1555
Dr. Grace Wong, M.D.
Burbank, CA · $441 in drug and device payments (2025) · (818) 563-1449
Dr. Hakop Gevorkyan, MD
Burbank, CA · $356 in drug and device payments (2025) · (818) 848-1555
Dr. Haydee Arboleda, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 524-2111
Dr. Helen Okoh, M.D
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Hnin Aung, MD, MBCHB
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 869-7600
Dr. Jamileh Hanna, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 524-3730
Dr. Keith Kauhanen, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 295-3380
Dr. Lara Samourjian, M.D.
Burbank, CA · $127 in drug and device payments (2025) · (818) 556-2700
Dr. Loc Duong, MD
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 843-9020
Dr. Maged Ayad, MD
Burbank, CA · $343 in drug and device payments (2025) · (818) 953-9400
Dr. Manjula Jain, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 391-1038
Dr. Maral Touna Arpi Donabedian, MD
Burbank, CA · No drug or device payments recorded (2025) · (702) 738-1153
Dr. Mark Gerard, MD
Burbank, CA · $2,123 in drug and device payments (2025) · (818) 562-3200
Dr. Michael Goldberg, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 524-2222
Dr. Michael Opene, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Monica Sarang, M.D.
Burbank, CA · $1,547 in drug and device payments (2025) · Telehealth · (818) 862-2997
Dr. Mustafa Albustani, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 843-9015
Dr. Nooshin Yashar, MD
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Paresh Varu, M.D.
Burbank, CA · $253 in drug and device payments (2025) · Telehealth · (818) 846-5888
Dr. Peter Jalbuena, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 972-2060
Dr. Purvi Patel, MD
Burbank, CA · No drug or device payments recorded (2025) · (626) 898-8000
Dr. Rachelle Padilla, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700
Dr. Reno Terribilini, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 556-2700

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.