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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. Dharminder Singh, M.D.
Fremont, CA · $112 in drug and device payments (2025) · (510) 797-1111
Dr. Divya Rajmohan, MD
Fremont, CA · $60 in drug and device payments (2025) · (510) 797-1111
Dr. Doan Luu, M.D.
Fremont, CA · $22 in drug and device payments (2025) · (510) 608-1334
Dr. Fakhar Abbas, MD
Fremont, CA · $1,195 in drug and device payments (2025) · (408) 689-8761
Dr. Frederick Hom, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Gagandeep Kaur, MD,FACP
Fremont, CA · No drug or device payments recorded (2025) · (510) 248-3000
Dr. Garrett Chan, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (800) 478-8837
Dr. Gautam Pareek, M.D.
Fremont, CA · $311 in drug and device payments (2025) · Telehealth · (510) 796-7796
Dr. Gina Chen, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Gladys Balderama, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Gunjan Saxena, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 796-7796
Dr. Hamid Syed, M.D.
Fremont, CA · No drug or device payments recorded (2025) · (510) 796-0222
Dr. Hannelore Mohr, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Hardeep Kour, MD
Fremont, CA · No drug or device payments recorded (2025) · (408) 507-2367
Dr. Harsha Ramchandani, M.D.
Fremont, CA · $15 in drug and device payments (2025) · (510) 770-8040
Dr. Heladio Gonzales, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Helen Ho, M.D.
Fremont, CA · No drug or device payments recorded (2025) · (510) 490-1222
Dr. Helen Wong-sexton, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Hemant Patel, M.D.
Fremont, CA · No drug or device payments recorded (2025) · (510) 796-3400
Dr. Htay Win, M.D.
Fremont, CA · $640 in drug and device payments (2025) · (510) 793-1958
Dr. Jacklin Grammer, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Jagmohan Jandu
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 498-2871
Dr. Jennifer Wang, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Jiin Lin, M.D.
Fremont, CA · $376 in drug and device payments (2025) · (510) 792-7875
Dr. Jinghua Shi, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 248-3000
Dr. Joel Lym, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. John Giddens, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 796-1000
Dr. John Scerbak, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Joshua Kan
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Joyce Lee
Fremont, CA · $71 in drug and device payments (2025) · Telehealth · (510) 490-1222
Dr. Juhi Kumar, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 795-3000
Dr. Julie Zhou, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Kai Jing, M.D.
Fremont, CA · $109 in drug and device payments (2025) · Telehealth · (510) 248-3000
Dr. Kashmira Ragi, M.D.
Fremont, CA · $232 in drug and device payments (2025) · Telehealth · (510) 790-0530
Dr. Kaylund Chan, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 248-3055
Dr. Khai Tran, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Kishore Narra, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 792-1390
Dr. Kori Matsuura
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 490-1222
Dr. Lawrence Quan, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 795-3000
Dr. Lay-hwa Lou, MD
Fremont, CA · No drug or device payments recorded (2025) · (510) 796-0222
Dr. Leena Kavali, MD
Fremont, CA · $18 in drug and device payments (2025) · (510) 796-0222
Dr. Lina Gourova, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 795-3000
Dr. Lincy Mathew, M.D.
Fremont, CA · $75 in drug and device payments (2025) · Telehealth · (510) 791-5475
Dr. Magin Alexander, MD
Fremont, CA · $29 in drug and device payments (2025) · Telehealth · (510) 248-1065
Dr. Mark Liang, M.D.
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 248-1065
Dr. Mediha Jaleel, MD
Fremont, CA · No drug or device payments recorded (2025) · Telehealth · (510) 797-1111
Dr. Megha Kotha
Fremont, CA · $388 in drug and device payments (2025) · Telehealth · (925) 685-4224
Dr. Michelle Htun, M.D
Fremont, CA · No drug or device payments recorded (2025) · (510) 796-0222
Dr. Michelle Smith, M.D.
Fremont, CA · No drug or device payments recorded (2025) · (858) 832-8963
Dr. Nally Tsang, M.D.
Fremont, CA · No drug or device payments recorded (2025) · (510) 490-1222

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.