HealthcareDiscovery.AI / Doctors / California / Internal Medicine

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. Ryan Mcmahan, MD, MAS
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 833-2000
Dr. Ryan Toledo
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7900
Dr. Sachin Garg, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7900
Dr. Sadia Dimbil, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Sai-sun Ho, M.D.
San Francisco, CA · $2,641 in drug and device payments (2025) · (415) 337-6135
Dr. Sal Fazio, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Sally Chau, MD
San Francisco, CA · $373 in drug and device payments (2025) · (415) 514-5575
Dr. Sally Daganzo, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-2402
Dr. Samuel Mannarino
San Francisco, CA · $51 in drug and device payments (2025) · (415) 833-2000
Dr. Sanaz Gidfar, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Sandeep Guntur, MD,MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Sandra Hernandez, M.D.
San Francisco, CA · $60 in drug and device payments (2025) · (415) 476-4082
Dr. Sandra Huang, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8317
Dr. Sandy Wong, M.D.
San Francisco, CA · $128 in drug and device payments (2025) · (415) 353-2421
Dr. Sangho Jee, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 514-1378
Dr. Sanjay Basu, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 762-3700
Dr. Sanjay Raisoni, MD
San Francisco, CA · $176 in drug and device payments (2025) · Telehealth · (415) 732-7029
Dr. Sanjiv Baxi, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Sansan Tin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 677-2388
Dr. Sarah Alba-nguyen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-9111
Dr. Sarah Doernberg, MD
San Francisco, CA · $2,529 in drug and device payments (2025) · Telehealth · (415) 476-1528
Dr. Sarah Hsu, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (628) 206-8494
Dr. Sarah Jewell, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-5200
Dr. Sarah Kim, M.D.
San Francisco, CA · $3,801 in drug and device payments (2025) · Telehealth · (310) 909-3872
Dr. Sarah Redmond
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9363
Dr. Sarah Summerville, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Sarah Wheeler, MD
San Francisco, CA · $23 in drug and device payments (2025) · (415) 353-6000
Dr. Sara Jeevanjee, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7300
Dr. Sara Lewin, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-3134
Dr. Sara-megumi Rumrill
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Sara Sani, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (510) 717-6234
Dr. Sara Swenson, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-7100
Dr. Sarita Dubey, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-9888
Dr. Sarvenaz Alibeigi, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 531-9047
Dr. Saumitra Thakur, MD
San Francisco, CA · No drug or device payments recorded (2025) · (650) 466-8095
Dr. Saundra Nguyen
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1529
Dr. Scott Bauer, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 502-5300
Dr. Scott Rodriguez, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 291-0480
Dr. Scott Steiger, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8494
Dr. Scott Swartz, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7900
Dr. Seema Sharma, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 759-2300
Dr. Sei Lee, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Semi Han, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. September Williams, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 759-2357
Dr. Shahab Aghamir, MD
San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2100
Dr. Shah Khan, M.D.
San Francisco, CA · $22 in drug and device payments (2025) · (415) 406-2822
Dr. Shalini Patel, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-4624
Dr. Shamil Jugnundan, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Shana Mcclain, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Sharada Narayan, MD, MS
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900

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

Related

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.