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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. Neda Galanoi, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 871-0497
Dr. Nico Conti
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Nitin Kapur, MD MPH
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-8828
Dr. Noah Kojima, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 315-8900
Dr. Noah Ravenborg
Santa Monica, CA · $19 in drug and device payments (2025) · Telehealth · (310) 582-6200
Dr. Noelle Boctor, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Nupur Agrawal, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 315-8900
Dr. Nurit Korn, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 560-7312
Dr. Oleg Melamed, MD
Santa Monica, CA · $24 in drug and device payments (2025) · (310) 319-4377
Dr. Oscar Hernandez, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 453-0419
Dr. Pauline Yi
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 899-7566
Dr. Pawan Juneja, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 453-1324
Dr. Payam Bokhoor
Santa Monica, CA · $25 in drug and device payments (2025) · Telehealth · (310) 319-4698
Dr. Philip Bretsky, MD, PHD
Santa Monica, CA · $64 in drug and device payments (2025) · (310) 828-4411
Dr. Qiuxue Tan, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 998-9118
Dr. Ramachandra Nemani, M.D
Santa Monica, CA · $1,434 in drug and device payments (2025) · (310) 828-6081
Dr. Rasha Ahmed, DO
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Rebecca Little, M.D.
Santa Monica, CA · $19 in drug and device payments (2025) · Telehealth · (310) 656-1701
Dr. Richard Eidinger, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 395-6060
Dr. Richard Greenspun, MD
Santa Monica, CA · $174 in drug and device payments (2025) · Telehealth · (310) 829-8903
Dr. Ricky Chang, M.D.
Santa Monica, CA · $40 in drug and device payments (2025) · (310) 998-9118
Dr. Robert Ashley, MD
Santa Monica, CA · $428 in drug and device payments (2025) · Telehealth · (310) 656-1700
Dr. Roger Lee, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Sarah Chan, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Sarah Garvey, MS, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 825-9111
Dr. Sarah Kim, M.D.
Santa Monica, CA · $19 in drug and device payments (2025) · Telehealth · (310) 458-2381
Dr. Sara Ptasnik, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 998-9118
Dr. Schehrezade Khan, M.D.
Santa Monica, CA · $28 in drug and device payments (2025) · (310) 453-1324
Dr. Scott Reiter, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 399-9142
Dr. Sean Delshad, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Serena Wang, MD
Santa Monica, CA · $19 in drug and device payments (2025) · Telehealth · (310) 582-6200
Dr. Sharon Kaminker, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-9935
Dr. Shirin Poustchi, PHARMD, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 458-2381
Dr. Sona Hurtz
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 656-1701
Dr. Stephen Kania, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 526-3940
Dr. Steven Becker, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (818) 623-0456
Dr. Sunil Sujan, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 998-0031
Dr. Teresa Dean, M.D.
Santa Monica, CA · $327 in drug and device payments (2025) · Telehealth · (310) 695-2450
Dr. Tony Kamel, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Tricia Len, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-8258
Dr. Uzma Khan, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 319-4698
Dr. Vanessa Olvera, MD
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 207-0117
Dr. Veronica Lazarus, M.D
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 902-8543
Dr. Vincent Hsu, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (909) 618-6106
Dr. Walter Solorzano
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 315-8900
Dr. Yao Liu, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 319-4698
Dr. Carl Constantine, M.D.
Santa Paula, CA · No drug or device payments recorded (2025) · (805) 647-0880
Dr. Christian Lami, M.D.
Santa Paula, CA · $61 in drug and device payments (2025) · Telehealth · (805) 507-2242
Dr. Cynthia Caffrey, MD
Santa Paula, CA · $54 in drug and device payments (2025) · Telehealth · (805) 933-6622
Dr. Gary Deutsch, M.D.
Santa Paula, CA · $52 in drug and device payments (2025) · Telehealth · (805) 525-7131

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.