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. Sharad Jain, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-4987
Dr. Sharon Meyer, M.D.
San Francisco, CA · $15 in drug and device payments (2025) · (510) 988-5033
Dr. Sharrie Ray, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (800) 221-5146
Dr. Shaun Young, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Shawn Torres, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Sheena Fletcher, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-1529
Dr. Sheena Kong, MD
San Francisco, CA · $382 in drug and device payments (2025) · (415) 673-7600
Dr. Sheila Gujrathi, M.D.
San Francisco, CA · $30 in drug and device payments (2025) · (415) 355-7400
Dr. Shelene Stine, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8000
Dr. Shelley Fung-yeung, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Sheri Weiser, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-2427
Dr. Shilpa Shah
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 600-2402
Dr. Shirley Chan, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1529
Dr. Shirley So, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Shobha Sadasivaiah
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8000
Dr. Shreya Ramayya, MD
San Francisco, CA · $172 in drug and device payments (2025) · (415) 353-2405
Dr. Shu Wing Chan, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 956-6633
Dr. Siddhartha Mitra, MD, PHD
San Francisco, CA · $171 in drug and device payments (2025) · (415) 353-7900
Dr. Sienna Kurland, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Silva Yuen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 336-9741
Dr. Siu-wei Huang, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 600-2402
Dr. Slaton Case
San Francisco, CA · $557 in drug and device payments (2025) · (773) 543-0603
Dr. Snigdha Vallabhaneni, MD
San Francisco, CA · No drug or device payments recorded (2025) · (847) 757-0607
Dr. Soham Rege, MD, MPH
San Francisco, CA · $299 in drug and device payments (2025) · (415) 476-4562
Dr. Somalee Banerjee, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Sonia Arana, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Son Quyen Dinh, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Sophia Chang, MD
San Francisco, CA · $24 in drug and device payments (2025) · (415) 206-8317
Dr. Sophia Wong, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-4082
Dr. Soraya Azari, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8494
Dr. Stacey Lambeth, M.D.
San Francisco, CA · $202 in drug and device payments (2025) · Telehealth · (415) 353-9983
Dr. Stacy Han
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 600-6000
Dr. Stefanie Kaiser, M.D.
San Francisco, CA · $337 in drug and device payments (2025) · (415) 833-2000
Dr. Stephanie Clavijo, MD
San Francisco, CA · No drug or device payments recorded (2025) · (951) 640-7842
Dr. Stephanie Rennke, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 885-3724
Dr. Stephanie Seiki, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-5909
Dr. Stephen Bent, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-2093
Dr. Stephen Chan, MD
San Francisco, CA · $28 in drug and device payments (2025) · Telehealth · (415) 600-2402
Dr. Stephen Conn, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Stephen Follansbee, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Stephen Gluck, MD
San Francisco, CA · $141 in drug and device payments (2025) · Telehealth · (415) 353-2507
Dr. Stephen Hauser, M.D.
San Francisco, CA · $11,268 in drug and device payments (2025) · (415) 476-9211
Dr. Stephen Hoffman, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-5753
Dr. Stephen Lazarus, MD
San Francisco, CA · $34 in drug and device payments (2025) · (415) 353-2961
Dr. Stephen Lee, M.D.
San Francisco, CA · $122 in drug and device payments (2025) · (415) 563-8686
Dr. Stephen Mcphee, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-4624
Dr. Stephen Nimelstein, MD
San Francisco, CA · $368 in drug and device payments (2025) · (415) 353-2357
Dr. Stephen Ong, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Stephen Pardys, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 922-2391
Dr. Stephen Tomlanovich, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1551

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.