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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. Michael Ayoub, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Michael Bier
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 391-7281
Dr. Michael Block, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 724-6673
Dr. Michael Chan, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (562) 882-8889
Dr. Michael Chang, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Michael Estes, M.D.
Los Angeles, CA · $24 in drug and device payments (2025) · (310) 825-8307
Dr. Michael Fan, MD
Los Angeles, CA · $372 in drug and device payments (2025) · (323) 783-4011
Dr. Michael Farzam, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 849-7991
Dr. Michael Garcia, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (800) 954-8000
Dr. Michael Garcia, M.D.
Los Angeles, CA · $22 in drug and device payments (2025) · Telehealth · (310) 825-7921
Dr. Michael Ghods, MD
Los Angeles, CA · $45 in drug and device payments (2025) · Telehealth · (424) 258-0124
Dr. Michael Head, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Michael Hochman, MD
Los Angeles, CA · $55 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Michael Iskander, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Michael Karp, M.D.
Los Angeles, CA · $41 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Michael Khalili, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 259-0608
Dr. Michael Langberg, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 967-1884
Dr. Michael Lee, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Michael Lepera, DMD MD
Los Angeles, CA · $84 in drug and device payments (2025) · (973) 418-4887
Dr. Michael Muellner, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-0339
Dr. Michael Nguyen, DO
Los Angeles, CA · $479 in drug and device payments (2025) · (213) 748-2411
Dr. Michael Ong, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-6232
Dr. Michael Rankin, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (626) 241-2467
Dr. Michael Romero, D.O.
Los Angeles, CA · $90 in drug and device payments (2025) · (323) 226-7556
Dr. Michael Sampson, M.D.
Los Angeles, CA · $671 in drug and device payments (2025) · Telehealth · (323) 953-2956
Dr. Michael Silao, M.D.
Los Angeles, CA · $791 in drug and device payments (2025) · Telehealth · (213) 484-1212
Dr. Michael Singleton, M.D., MBA
Los Angeles, CA · $512 in drug and device payments (2025) · (323) 750-1197
Dr. Michael Soles
Los Angeles, CA · $1,045 in drug and device payments (2025) · (213) 744-3945
Dr. Michael Stefan, M.D.
Los Angeles, CA · $78 in drug and device payments (2025) · (213) 484-2957
Dr. Michael Swiernik, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Michael Tanoue, M.D.
Los Angeles, CA · $1,621 in drug and device payments (2025) · Telehealth · (310) 666-2912
Dr. Michael West
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-7556
Dr. Michael Zhou, MD
Los Angeles, CA · $41 in drug and device payments (2025) · (951) 339-8459
Dr. Michelle Banh, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-5707
Dr. Michelle Tsukamoto, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 919-1125
Dr. Michelle White
Los Angeles, CA · No drug or device payments recorded (2025) · (801) 889-7180
Dr. Michel Mazouz, M.D.
Los Angeles, CA · $231 in drug and device payments (2025) · Telehealth · (310) 201-0626
Dr. Mike Uyeki, MD
Los Angeles, CA · $150 in drug and device payments (2025) · Telehealth · (310) 481-0481
Dr. Mildred Wenger, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 461-9355
Dr. Mina Ma, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 315-8920
Dr. Min Cha, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 480-7770
Dr. Min Young Lee, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4516
Dr. Mira Kistler, MD
Los Angeles, CA · $32 in drug and device payments (2025) · (310) 267-9643
Dr. Mirna Elias, M.D
Los Angeles, CA · $240 in drug and device payments (2025) · Telehealth · (213) 487-6867
Dr. Missak Kltchian, MD
Los Angeles, CA · $1,544 in drug and device payments (2025) · (323) 661-4500
Dr. Mitchell Wong, MD
Los Angeles, CA · $23 in drug and device payments (2025) · Telehealth · (310) 794-9718
Dr. Moe Aung, M.D.
Los Angeles, CA · $42 in drug and device payments (2025) · (213) 380-7298
Dr. Moe Kyi, M.D.
Los Angeles, CA · $46 in drug and device payments (2025) · (323) 780-4510
Dr. Mohamad Raad, M.D.
Los Angeles, CA · $898 in drug and device payments (2025) · (323) 226-2601
Dr. Mohamed Elbathani, MD. MSC
Los Angeles, CA · $403 in drug and device payments (2025) · (323) 409-6225

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.