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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. Kirk Essenmacher, M.D.
San Francisco, CA · $17 in drug and device payments (2025) · (415) 759-2388
Dr. Kirsten Bibbins-domingo, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8317
Dr. Kirsten Marcus, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 590-6140
Dr. Kjell Jorgenson, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 312-0275
Dr. Koorush Kabiri, DO
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-5202
Dr. Kreshnik Zejnullahu, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Krista Powell, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Kristen Reid, M.D.
San Francisco, CA · $25 in drug and device payments (2025) · (415) 206-5141
Dr. Kristine Hsieh, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6520
Dr. Kristine Lee, MD
San Francisco, CA · $43 in drug and device payments (2025) · (415) 833-3034
Dr. Kristin Wong, M.D.
San Francisco, CA · $131 in drug and device payments (2025) · Telehealth · (415) 548-2225
Dr. Krithika Chennapan, MD
San Francisco, CA · $910 in drug and device payments (2025) · (415) 600-6000
Dr. Kshitija Kari, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 531-9047
Dr. Kuan-tung Lin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 391-9686
Dr. Kunal Mehtani, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Kush Gaur
San Francisco, CA · $38 in drug and device payments (2025) · Telehealth · (415) 600-5400
Dr. Kwok Chan, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 752-0337
Dr. Kyi Win, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 364-7600
Dr. Kyle Hunter
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8000
Dr. Kyle Richardville, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Kyung Lee, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 292-8888
Dr. Kyung Min, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Lai Lai Aung, M.D
San Francisco, CA · No drug or device payments recorded (2025) · (415) 682-1755
Dr. Lan Jin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 503-9277
Dr. Larisa Potap, M.D
San Francisco, CA · No drug or device payments recorded (2025) · (415) 928-0134
Dr. Larissa Thomas, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8000
Dr. Latifat Apatira, M.D
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-3034
Dr. Laura Arbogast, DO
San Francisco, CA · No drug or device payments recorded (2025) · (916) 701-3529
Dr. Laura Schoenherr, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Laurence Corash, M.D.
San Francisco, CA · $335,526 in drug and device payments (2025) · (415) 353-1672
Dr. Laurence Peiperl, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 487-5632
Dr. Lauren Cohen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Laurene Spencer, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 863-3883
Dr. Lauren Goldman, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Lauren Lederle, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 514-8655
Dr. Lauren Olson, MD
San Francisco, CA · $597 in drug and device payments (2025) · Telehealth · (415) 752-0100
Dr. Lauren Phinney, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (628) 206-8000
Dr. Lauren Proctor, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (888) 663-6331
Dr. Lauren Standig, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 641-4027
Dr. Lauren Wu, MD
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Lawrence Chao, M.D.
San Francisco, CA · $2,211 in drug and device payments (2025) · Telehealth · (415) 333-3302
Dr. Lawrence Tierney, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-2086
Dr. Leah Karliner, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7300
Dr. Leah Klinger, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Leah Tessler, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 674-2600
Dr. Lee Liskey, MD
San Francisco, CA · $4,913 in drug and device payments (2025) · Telehealth · (415) 642-2000
Dr. Leena Badhwar, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (800) 997-6196
Dr. Lee Rawitscher, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-5612
Dr. Lee Tat Chan, M.D.
San Francisco, CA · $2,557 in drug and device payments (2025) · (415) 221-0177
Dr. Lei Choi, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 600-2402

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.