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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. Zainab Mabizari, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 723-4000
Dr. James Sharkoff, M.D.
Stanton, CA · No drug or device payments recorded (2025) · (714) 828-2444
Dr. Ajay Toppur Ramanakumar, M.D
Stockton, CA · $4,726 in drug and device payments (2025) · Telehealth · (209) 944-5750
Dr. Alexander Chan, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 689-4607
Dr. Alfredo Leon, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 475-5500
Dr. Alvin Zachariah, M.D.
Stockton, CA · $125 in drug and device payments (2025) · (209) 613-1282
Dr. Amin Seyedkazemi, DO
Stockton, CA · No drug or device payments recorded (2025) · Telehealth · (209) 475-5500
Dr. Aziz Kamali, M.D.
Stockton, CA · $4,031 in drug and device payments (2025) · (209) 478-5533
Dr. Aziz Khambati, M.D.
Stockton, CA · $552 in drug and device payments (2025) · (209) 944-4700
Dr. Baljit Dhesi, MD
Stockton, CA · $2,646 in drug and device payments (2025) · Telehealth · (209) 944-5750
Dr. Caroline Tashdjian, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 547-7177
Dr. Cecelia Blawie, MD
Stockton, CA · No drug or device payments recorded (2025) · (330) 493-4443
Dr. Charanjit Mann, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Christina Vo, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Christopher Russo, DO, MPH
Stockton, CA · No drug or device payments recorded (2025) · (209) 833-2367
Dr. Chung Tse, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Dheeraj Nandanoor, M.D.
Stockton, CA · $552 in drug and device payments (2025) · Telehealth · (209) 472-2300
Dr. Dildeep Batth, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 944-5550
Dr. Divya Ravi, MD
Stockton, CA · $270 in drug and device payments (2025) · (209) 461-7580
Dr. Dorothy Do-williams, M.D.
Stockton, CA · No drug or device payments recorded (2025) · (209) 943-2000
Dr. Edmund Yao, M.D.
Stockton, CA · $118 in drug and device payments (2025) · (209) 472-7100
Dr. Edward Greenleaf, M.D.
Stockton, CA · $135 in drug and device payments (2025) · (209) 475-1111
Dr. Elena Naderzad
Stockton, CA · No drug or device payments recorded (2025) · (209) 547-7177
Dr. Elma Cara, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Enelyn Canio, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Fang Guo, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. George Schilling, M.D.
Stockton, CA · $375 in drug and device payments (2025) · (209) 957-7050
Dr. Gisella Tay Yong, M.D.
Stockton, CA · $20 in drug and device payments (2025) · (209) 944-4700
Dr. Gursharan Nahl, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 948-0808
Dr. Harpreet Singh, M.D.
Stockton, CA · $63 in drug and device payments (2025) · Telehealth · (209) 954-3370
Dr. Harsimran Basra, MD
Stockton, CA · $22 in drug and device payments (2025) · Telehealth · (209) 954-3370
Dr. Howard Young, MD
Stockton, CA · $163 in drug and device payments (2025) · (209) 476-2000
Dr. Hymavathy Jasti, MD
Stockton, CA · No drug or device payments recorded (2025) · Telehealth · (209) 476-2000
Dr. Issa Fakhouri, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. James Belogorsky, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 957-7050
Dr. Jasmine Ghuman, MD
Stockton, CA · $131 in drug and device payments (2025) · (209) 373-2816
Dr. Jasmine Hundal
Stockton, CA · No drug or device payments recorded (2025) · (209) 751-1919
Dr. Jennifer Jose
Stockton, CA · $15 in drug and device payments (2025) · Telehealth · (209) 954-3370
Dr. Jennifer Vu
Stockton, CA · No drug or device payments recorded (2025) · (209) 751-7591
Dr. John Blinn, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 957-7050
Dr. Joseph Wong, MD
Stockton, CA · $44 in drug and device payments (2025) · (209) 476-2000
Dr. Kemin Zhang, MD
Stockton, CA · No drug or device payments recorded (2025) · Telehealth · (209) 476-2000
Dr. Khin Yi, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Kwabena Adubofour, M.D.
Stockton, CA · $355 in drug and device payments (2025) · (800) 249-9497
Dr. Lan Quang, M.D.
Stockton, CA · $3,262 in drug and device payments (2025) · (209) 465-5107
Dr. Lan Zhang, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 957-7050
Dr. Loc Nguyen, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 227-9297
Dr. Lorna Agoo, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Madalyn Rivas
Stockton, CA · No drug or device payments recorded (2025) · (209) 547-7717
Dr. Mandeep Dhindsa, MD
Stockton, CA · $51 in drug and device payments (2025) · (209) 373-2800

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.