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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 Lafemina, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Michael Levy, MD
San Francisco, CA · No drug or device payments recorded (2025) · (505) 269-8401
Dr. Michael Martin, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8000
Dr. Michael Matthay, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2873
Dr. Michael Mcshane, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 759-3529
Dr. Michael Nguyen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 334-2500
Dr. Michael Richardson, MD
San Francisco, CA · $377 in drug and device payments (2025) · (415) 476-1528
Dr. Michael Schrader, M.D. PH.D
San Francisco, CA · $63 in drug and device payments (2025) · Telehealth · (415) 379-2980
Dr. Michael Sdao, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Michael Shlipak, MD
San Francisco, CA · $15,414 in drug and device payments (2025) · (415) 750-2093
Dr. Michael Shulman, M.D.
San Francisco, CA · $360 in drug and device payments (2025) · (415) 771-7468
Dr. Michael Weingert, MD
San Francisco, CA · No drug or device payments recorded (2025) · (650) 862-5736
Dr. Michelle Allen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2200
Dr. Michelle Freemer, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8314
Dr. Michelle Guy, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7300
Dr. Michelle Mourad, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-2264
Dr. Michelle Neely Akhmerov
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Michelle Schneidermann, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-4462
Dr. Michelle Yu, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (646) 316-5515
Dr. Mike Cheng, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Mitchell Feldman, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-8587
Dr. Mitchell Katz, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-2400
Dr. Mohammed Ahmed, MD
San Francisco, CA · $23 in drug and device payments (2025) · Telehealth · (415) 600-3438
Dr. Mohammed Hussain
San Francisco, CA · No drug or device payments recorded (2025) · (347) 398-7680
Dr. Mojan Manzar Nejad, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 641-6667
Dr. Molong Li, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Mona Shing, M.D.
San Francisco, CA · $30 in drug and device payments (2025) · (650) 745-6141
Dr. Monica Tilly
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-6581
Dr. Monita Yuen-green, M.D.
San Francisco, CA · $211 in drug and device payments (2025) · Telehealth · (415) 221-3200
Dr. Morris Flaum, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-0110
Dr. Mubashara Amin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-9182
Dr. Mukhammad Bobur Sultanov, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Nader Banki, MD
San Francisco, CA · $168 in drug and device payments (2025) · (415) 641-6401
Dr. Nadine Pardee, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Nancy Mcafee, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 291-0480
Dr. Nang Lok Ellick Tsang, M.D.
San Francisco, CA · $725 in drug and device payments (2025) · Telehealth · (415) 648-5900
Dr. Nareg Roubinian, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-0735
Dr. Natalie Charlton, M.D.
San Francisco, CA · $16 in drug and device payments (2025) · (415) 750-5909
Dr. Natasha Bahri, M.D.
San Francisco, CA · $587 in drug and device payments (2025) · (415) 476-0999
Dr. Nathan Bass, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2318
Dr. Nathan Favini, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 349-0850
Dr. Nathaniel Gleason, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7999
Dr. Nathan Radakovich, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9363
Dr. Nawal Ahmed Khan, MD
San Francisco, CA · No drug or device payments recorded (2025) · (888) 803-3370
Dr. Nazima Allaudeen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (650) 248-5405
Dr. Neal Benowitz, MD
San Francisco, CA · $17 in drug and device payments (2025) · (415) 206-3503
Dr. Neda Ratanawongsa, MD
San Francisco, CA · No drug or device payments recorded (2025) · (410) 206-8494
Dr. Neetu Nebhwani, MD
San Francisco, CA · $598 in drug and device payments (2025) · (415) 578-3100
Dr. Neil Bhalerao, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Neil Gupta, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-5924

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.