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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. Shagufta Yasmeen, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 934-4485
Dr. Shahin Shahbazi, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Steven Paik, MD
Elk Grove, CA · $66 in drug and device payments (2025) · (916) 688-2000
Dr. Sukhwinder Singh, D.O.
Elk Grove, CA · No drug or device payments recorded (2025) · (310) 985-3226
Dr. Vinh Luu, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 683-3955
Dr. Wajahat Khan, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 667-0600
Dr. Yanzhi Zhu, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 688-2106
Dr. Yelena Sergeyeva, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Yogesh Nandan, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 684-9335
Dr. Prabhu Shankar, MD, MS
El Macero, CA · No drug or device payments recorded (2025) · (408) 458-6119
Dr. Afshin Adhami, MD
El Monte, CA · $440 in drug and device payments (2025) · Telehealth · (626) 350-9540
Dr. Alvin Kong
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Charlie Chan
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Elsa Marshall, M.D.
El Monte, CA · No drug or device payments recorded (2025) · (626) 582-7956
Dr. Htun Tin
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Jasmine Chwa
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Julia Chin
El Monte, CA · No drug or device payments recorded (2025) · (626) 242-7061
Dr. Justin Lee
El Monte, CA · $84 in drug and device payments (2025) · (626) 579-8463
Dr. Kamelia Kashani, DO
El Monte, CA · $175 in drug and device payments (2025) · Telehealth · (626) 575-4584
Dr. Lina Jimenez, MD
El Monte, CA · No drug or device payments recorded (2025) · (323) 254-8797
Dr. Matthew Kaw, M.D.
El Monte, CA · $516 in drug and device payments (2025) · (626) 575-4511
Dr. Nabil Soliman, MD
El Monte, CA · No drug or device payments recorded (2025) · (626) 401-4147
Dr. Nyun Nyun Soe
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Parveen Kaur, MD
El Monte, CA · No drug or device payments recorded (2025) · (626) 444-9453
Dr. Rita Ogbo, MD
El Monte, CA · No drug or device payments recorded (2025) · (626) 448-0468
Dr. Salvador Rubio
El Monte, CA · No drug or device payments recorded (2025) · (626) 258-1600
Dr. Sandar Chen, MD
El Monte, CA · $21 in drug and device payments (2025)
Dr. Stanley Leong
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Tiffany Pan, M.D.
El Monte, CA · No drug or device payments recorded (2025) · (626) 434-2500
Dr. Tong Tan
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Vinh Nguyen, MD
El Monte, CA · $27 in drug and device payments (2025) · (626) 448-3550
Dr. William Hung
El Monte, CA · No drug or device payments recorded (2025) · (626) 579-8463
Dr. Wu Liu, M.D.
El Monte, CA · $692 in drug and device payments (2025) · (626) 455-0166
Dr. Yan Ping Zhang, MD
El Monte, CA · No drug or device payments recorded (2025) · Telehealth · (626) 442-2929
Dr. Yong Wang, MD
El Monte, CA · $657 in drug and device payments (2025) · Telehealth · (626) 579-9541
Dr. Anish Peter, ANISH PETER
El Segundo, CA · No drug or device payments recorded (2025) · (310) 354-4346
Dr. Charles Martineau, M.D.
El Segundo, CA · No drug or device payments recorded (2025) · (323) 628-8671
Dr. Christopher Hammond, DO
El Segundo, CA · $20 in drug and device payments (2025) · (310) 279-2134
Dr. Jennifer Curtin, M.D.
El Segundo, CA · No drug or device payments recorded (2025) · (323) 372-3083
Dr. Michael Mellman, MEDICAL DOCTOR
El Segundo, CA · $282 in drug and device payments (2025) · Telehealth · (310) 643-7494
Dr. Ariadne Lie, MD
Emeryville, CA · No drug or device payments recorded (2025) · Telehealth · (510) 806-2238
Dr. Arzhang Zereshki, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · Telehealth · (510) 647-5101
Dr. Brian Roberts, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · (510) 596-8988
Dr. Clay Angel, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · (510) 596-8988
Dr. Curtis Johnson, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · (510) 596-8988
Dr. Dean Nickles, MD
Emeryville, CA · No drug or device payments recorded (2025) · Telehealth · (510) 806-2100
Dr. Farhan Choudhury, DO
Emeryville, CA · No drug or device payments recorded (2025) · Telehealth · (510) 266-5400
Dr. Janet Ewing, MD
Emeryville, CA · $130 in drug and device payments (2025) · (510) 525-2400
Dr. John Russell, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · (510) 596-8988
Dr. Jose Camaro, M.D.
Emeryville, CA · No drug or device payments recorded (2025) · (510) 596-8988

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.