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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. Kamran Atabai
San Francisco, CA · No drug or device payments recorded (2025) · (415) 647-8600
Dr. Kanchi Batra, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 260-2806
Dr. Kandice Strako, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Karen Bayle, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 355-7470
Dr. Karen Earle, MD
San Francisco, CA · $4,964 in drug and device payments (2025) · Telehealth · (415) 353-2350
Dr. Karen Hauer, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-4624
Dr. Karen Hauser, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2850
Dr. Karen Khoo, MD
San Francisco, CA · $251 in drug and device payments (2025) · Telehealth · (415) 221-3200
Dr. Karen Seal, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Karen Steingart, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8314
Dr. Karina Arzumanova, M.D
San Francisco, CA · No drug or device payments recorded (2025) · (415) 440-0612
Dr. Karl Sporer, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-5753
Dr. Karl Swanson, DO
San Francisco, CA · No drug or device payments recorded (2025) · (609) 680-6679
Dr. Karly Murphy, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Karthik Rohatgi, MD
San Francisco, CA · $29 in drug and device payments (2025) · Telehealth · (415) 353-7900
Dr. Katelyn Gamson, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-3954
Dr. Katherine Crabtree, MD MPH
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (628) 217-7900
Dr. Katherine Gundling, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2725
Dr. Katherine Julian, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-4624
Dr. Katherine Lupton, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8494
Dr. Katherine Neilan, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Kathleen Liu, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-2172
Dr. Kathleen Tong, M.D.
San Francisco, CA · $4,525 in drug and device payments (2025) · (415) 502-1115
Dr. Kathryn Sullivan
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-0735
Dr. Kathryn Szymanski, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-3954
Dr. Katy Tsai, MD
San Francisco, CA · $2,220 in drug and device payments (2025) · Telehealth · (415) 353-9900
Dr. Kavita Trivedi, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 641-5695
Dr. Kavitha Jayachandran, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Kazushige Shiraishi, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-0753
Dr. Keiji Fukuda, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8317
Dr. Kelsey Perry, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Kendra Moore, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 514-8655
Dr. Kenneth Barnes, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 550-0811
Dr. Kenneth Chan, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 982-6691
Dr. Kenneth Chang, MD
San Francisco, CA · $94 in drug and device payments (2025) · (415) 421-4525
Dr. Kenneth Colley, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 225-5771
Dr. Kenneth Covinsky, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Kenneth Hubbell, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1529
Dr. Kenneth Maybury, M.D.
San Francisco, CA · $1,669 in drug and device payments (2025) · Telehealth · (415) 422-0998
Dr. Kenneth Mills, M.D.
San Francisco, CA · $1,089 in drug and device payments (2025) · Telehealth · (415) 752-0100
Dr. Kenneth Sack, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2497
Dr. Kenneth Tai, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 391-9686
Dr. Kerri Masutto, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 515-9382
Dr. Kevin Gates, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Kevin Martinez, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2850
Dr. Kevin Saitowitz, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 921-5300
Dr. Kimberly Truong, M.D., M.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · (805) 635-8281
Dr. Kip King, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Kip Mihara, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Kiran Vaswani, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 746-1950

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.