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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. Robert Nguyen, MD
Madera, CA · $107 in drug and device payments (2025) · (559) 674-2494
Dr. Satwant Samrao, MD
Madera, CA · $294 in drug and device payments (2025) · (559) 674-8838
Dr. Sohaila Mojadaddi, MD
Madera, CA · $154 in drug and device payments (2025) · Telehealth · (559) 661-1100
Dr. Steven Gustaveson, MD
Madera, CA · $950 in drug and device payments (2025) · (559) 662-2705
Dr. Tahir Hassan, M.D
Madera, CA · $661 in drug and device payments (2025) · (559) 673-1111
Dr. Zafar Sheikh, M.D.
Madera, CA · $66 in drug and device payments (2025) · (559) 662-2705
Dr. Harry Cohen, M.D.
Malibu, CA · No drug or device payments recorded (2025) · (818) 414-6000
Dr. Lisa Benya, D.O.
Malibu, CA · No drug or device payments recorded (2025) · Telehealth · (310) 456-1603
Dr. Milica Simpson, M.D.
Malibu, CA · No drug or device payments recorded (2025) · Telehealth · (310) 456-1668
Dr. Brandon Shiau, MD
Manhattan Beach, CA · No drug or device payments recorded (2025) · Telehealth · (310) 546-4599
Dr. Elaine Jones, MD
Manhattan Beach, CA · $604 in drug and device payments (2025) · Telehealth · (310) 939-1886
Dr. Jennifer Baars, MD
Manhattan Beach, CA · No drug or device payments recorded (2025) · Telehealth · (310) 939-7858
Dr. Jon Friedman, MD
Manhattan Beach, CA · No drug or device payments recorded (2025) · (310) 376-1217
Dr. Lucie Brining, M.D.
Manhattan Beach, CA · No drug or device payments recorded (2025) · Telehealth · (310) 546-4599
Dr. Mahsa Madani, MD
Manhattan Beach, CA · $383 in drug and device payments (2025) · Telehealth · (310) 939-7847
Dr. Melanie Khamlong, MD
Manhattan Beach, CA · $271 in drug and device payments (2025) · Telehealth · (310) 939-7847
Dr. Raju Wadhwa, MD
Manhattan Beach, CA · $93 in drug and device payments (2025) · Telehealth · (310) 939-1892
Dr. Sunil Adwani, M.D.
Manhattan Beach, CA · $272 in drug and device payments (2025) · Telehealth · (310) 322-9700
Dr. Abdul Khan, M.D.
Manteca, CA · $2,428 in drug and device payments (2025) · Telehealth · (209) 824-1230
Dr. Anil Sain, MD
Manteca, CA · $1,247 in drug and device payments (2025) · (209) 825-7748
Dr. Bernard Bacay, MD
Manteca, CA · $1,323 in drug and device payments (2025) · Telehealth · (209) 825-6331
Dr. Chakri Bilva
Manteca, CA · No drug or device payments recorded (2025) · Telehealth · (209) 824-5051
Dr. David Allen, MD
Manteca, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Eh Mu, MD
Manteca, CA · No drug or device payments recorded (2025) · Telehealth · (209) 476-2000
Dr. Kyi San, MD
Manteca, CA · No drug or device payments recorded (2025) · Telehealth · (209) 823-2345
Dr. Maria Bacay, MD
Manteca, CA · $1,470 in drug and device payments (2025) · Telehealth · (209) 825-6331
Dr. Michael Nguyen, MD
Manteca, CA · $109 in drug and device payments (2025) · (209) 476-2000
Dr. Mitchell Maccready, MD
Manteca, CA · $153 in drug and device payments (2025) · Telehealth · (209) 823-2345
Dr. M Jacqueline Galang, MD
Manteca, CA · $416 in drug and device payments (2025) · Telehealth · (209) 239-0120
Dr. Pallavi Prakash Chaurasia
Manteca, CA · No drug or device payments recorded (2025) · (209) 825-3700
Dr. Rahul Patel, M.D.
Manteca, CA · $1,205 in drug and device payments (2025) · Telehealth · (209) 825-1660
Dr. Randall Yee, M.D.
Manteca, CA · No drug or device payments recorded (2025) · (209) 823-2345
Dr. Russell Carter, MD
Manteca, CA · No drug or device payments recorded (2025) · (209) 239-4554
Dr. Samuel Galicia, M.D.
Manteca, CA · No drug or device payments recorded (2025) · Telehealth · (209) 825-3700
Dr. Santokh Bhullar, MD
Manteca, CA · No drug or device payments recorded (2025) · (510) 304-3075
Dr. Swati Pathak, M.D.
Manteca, CA · $193 in drug and device payments (2025) · Telehealth · (209) 823-2347
Dr. Terry Croasdale, M.D.
Manteca, CA · $383 in drug and device payments (2025) · (209) 823-7646
Dr. Vinisha Noti
Manteca, CA · No drug or device payments recorded (2025) · (209) 825-3700
Dr. William King, MD
Manteca, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Jennifer Ngo, DO
March Air Reserve Base, CA · No drug or device payments recorded (2025) · (951) 251-7475
Dr. Linda Aragon, M.D.
Mare Isle, CA · No drug or device payments recorded (2025) · (707) 562-8218
Dr. Agnieszka Lech, MD
Marina, CA · No drug or device payments recorded (2025) · (831) 582-2100
Dr. Alan Steinberg, MD
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 306-6966
Dr. Angelica Duenas, M.D.
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 600-2787
Dr. Arti Chawla, M.D.
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 827-3700
Dr. Carlo Medina, M.D.
Marina Del Rey, CA · $55 in drug and device payments (2025) · (310) 823-3443
Dr. Cynthia Cotharn, M.D.
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 489-9985
Dr. Daniel Virnich, M.D.
Marina Del Rey, CA · No drug or device payments recorded (2025) · (303) 667-8950
Dr. David Kaplowitz, MD
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 823-4993
Dr. Gregory Saccone, MD
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 827-3700

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.