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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. Anige'r Oriol, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6332
Dr. Ani Markarian, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (800) 954-8000
Dr. Anisha Contractor, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-7667
Dr. Anish Desai, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-4683
Dr. Anish Mahajan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 857-2000
Dr. Anita Agzarian, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-4212
Dr. Anita Batra, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 391-7281
Dr. Anjali Jain, M.D.
Los Angeles, CA · $221 in drug and device payments (2025) · Telehealth · (909) 910-5246
Dr. Anna Arakelyan, MD
Los Angeles, CA · $160 in drug and device payments (2025) · Telehealth · (213) 623-2225
Dr. Anna Bagdasaryan, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Anna Celina Gonzalez
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 565-3000
Dr. Anna-claire Siena, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 478-3711
Dr. Anna Lourdes Chickey, M.D.
Los Angeles, CA · $229 in drug and device payments (2025) · (213) 385-7888
Dr. Annapoorna Chirra, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-6232
Dr. Anne Climaco, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 226-6573
Dr. Anne Peters, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 936-8283
Dr. Annette Rittmann, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Anne Walling, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Annie Wang, MD
Los Angeles, CA · $145 in drug and device payments (2025) · Telehealth · (310) 794-9830
Dr. Annie Zhang, M.D.
Los Angeles, CA · $30 in drug and device payments (2025) · (310) 206-6232
Dr. An Pang Chieng, M.D.
Los Angeles, CA · $455 in drug and device payments (2025) · (323) 225-2351
Dr. Anthony D'oro, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Anthony Karapetians
Los Angeles, CA · $34 in drug and device payments (2025) · Telehealth · (818) 201-8731
Dr. Anthony Mills, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-2324
Dr. Anuradha Seshadri, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 208-7777
Dr. Aparna Miano, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (626) 457-5839
Dr. Ardalan Bazargan-lari, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 857-2000
Dr. Arek Jibilian, M.D.
Los Angeles, CA · $144 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Argin Baghramian, MD
Los Angeles, CA · $135 in drug and device payments (2025) · (213) 977-2121
Dr. Arinder Chadha, MD, MBA, FACP
Los Angeles, CA · $19 in drug and device payments (2025) · (323) 881-2675
Dr. Ari Ucar
Los Angeles, CA · $19 in drug and device payments (2025) · (424) 338-8000
Dr. Arleen Brown, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-6232
Dr. Armand Ryden, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Arnold Brickman, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-0631
Dr. Arpa Baroni, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-1023
Dr. Arpita Devani, D.O.
Los Angeles, CA · $15,589 in drug and device payments (2025) · (909) 437-8334
Dr. Arta Lahiji, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 896-0010
Dr. Arthur Shen, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Arthur Vermeulen, MD
Los Angeles, CA · $2,996 in drug and device payments (2025) · (323) 215-1725
Dr. Arvind Ravinutala, M.D.
Los Angeles, CA · $17 in drug and device payments (2025) · (323) 268-5000
Dr. Ashkan Naraghi, M.D.
Los Angeles, CA · $47,106 in drug and device payments (2025) · Telehealth · (310) 382-4363
Dr. Ashley Saito
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Ashraf Khan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 250-5005
Dr. Aslan Pirouz, MD
Los Angeles, CA · $887 in drug and device payments (2025) · Telehealth · (310) 709-9125
Dr. Asongu Ncho, MD
Los Angeles, CA · $22 in drug and device payments (2025) · (310) 305-9200
Dr. Asra Butt
Los Angeles, CA · $426 in drug and device payments (2025) · (833) 574-2273
Dr. Aswathnarayan Manandhi, M.D.
Los Angeles, CA · $1,662 in drug and device payments (2025) · (310) 423-3977
Dr. Atefeh Kalantary, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Atheer Razzouk, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 825-7375
Dr. Augustine Pyo
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (424) 529-6755

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.