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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. Kanwalpreet Hundal, MD
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Kim Benson, M.D.
Dublin, CA · $14 in drug and device payments (2025) · Telehealth · (925) 875-6100
Dr. Kweku Hayfron, M.D., M.S.
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Megha Goyal, MD
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Melissa Sung, MD
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Natasha Phan, MD
Dublin, CA · No drug or device payments recorded (2025) · (925) 829-9888
Dr. Seon Tjoe, M.D.
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Syed Hussain, MD
Dublin, CA · No drug or device payments recorded (2025) · (928) 551-6686
Dr. Tracy Thompson, MD
Dublin, CA · No drug or device payments recorded (2025) · (925) 875-6100
Dr. Tulika Ghosh, MD
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Varsha Saha, MD
Dublin, CA · $21 in drug and device payments (2025) · (925) 875-6100
Dr. Tejendra Srivastava, M.D.
Dunsmuir, CA · No drug or device payments recorded (2025) · (530) 235-4428
Dr. Ricardo Roman, M.D.
Eagle Rock, CA · $4,764 in drug and device payments (2025) · (323) 254-3700
Dr. Arta Bakshandeh, D.O.
East Los Angeles, CA · No drug or device payments recorded (2025) · (844) 310-2247
Dr. Kevin Chen, M.D.
East Los Angeles, CA · No drug or device payments recorded (2025) · (323) 362-1010
Dr. Thanda Zaw, MD
East Los Angeles, CA · No drug or device payments recorded (2025) · (323) 728-0411
Dr. Chau Nguyen-thio, MD
Eastvale, CA · No drug or device payments recorded (2025) · (951) 739-2717
Dr. Christian Lanot, M.D.
Eastvale, CA · $85 in drug and device payments (2025) · Telehealth · (951) 739-2737
Dr. Koushik Kasanagottu, MD
Eastvale, CA · No drug or device payments recorded (2025) · (888) 854-1397
Dr. Kallyn Harencak, M.D.
Edwards Afb, CA · No drug or device payments recorded (2025) · (661) 277-2814
Dr. Tiffany Byrd, M.D.
Edwards Afb, CA · $19 in drug and device payments (2025) · (661) 275-2749
Dr. Ahmed Al Shawwaf, M.D
El Cajon, CA · $274 in drug and device payments (2025) · (619) 593-3007
Dr. Alan Awdisho, D.O.
El Cajon, CA · No drug or device payments recorded (2025) · (619) 662-4100
Dr. Amethyst Aguero, DO
El Cajon, CA · No drug or device payments recorded (2025) · (619) 515-2498
Dr. Arjun Reddy, MD
El Cajon, CA · No drug or device payments recorded (2025) · (619) 445-0707
Dr. Bassam Nassir, M.D.
El Cajon, CA · $20 in drug and device payments (2025) · (619) 662-4100
Dr. David Lorenz, M.D.
El Cajon, CA · No drug or device payments recorded (2025) · (619) 312-0347
Dr. David Mansour, DO
El Cajon, CA · $195 in drug and device payments (2025) · Telehealth · (193) 120-0347
Dr. Fereshteh Jahanpanah, MD
El Cajon, CA · $123 in drug and device payments (2025) · (619) 447-6001
Dr. Gurpreet Sihota
El Cajon, CA · No drug or device payments recorded (2025) · (619) 515-2499
Dr. Hala Sheikh-mohamed, M.D
El Cajon, CA · $47 in drug and device payments (2025) · (619) 662-4100
Dr. Jimi Benson, M.D.
El Cajon, CA · $533 in drug and device payments (2025) · Telehealth · (619) 383-6703
Dr. Mai Duong, M.D.
El Cajon, CA · No drug or device payments recorded (2025) · (619) 515-2498
Dr. Misa Hidaka, M.D
El Cajon, CA · No drug or device payments recorded (2025) · (619) 440-2751
Dr. Mohammed Alshammary, MD
El Cajon, CA · $605 in drug and device payments (2025) · Telehealth · (619) 499-5006
Dr. Mutuhi Mugo, M.D
El Cajon, CA · No drug or device payments recorded (2025) · (619) 515-2498
Dr. Nossa Maya, M.D.
El Cajon, CA · No drug or device payments recorded (2025) · Telehealth · (619) 455-0122
Dr. Prachi Karnik, M.D.
El Cajon, CA · $505 in drug and device payments (2025) · Telehealth · (858) 499-2600
Dr. Randa Gorges, M.D.
El Cajon, CA · $666 in drug and device payments (2025) · (619) 515-2499
Dr. Robin Spiering, MD
El Cajon, CA · $1,255 in drug and device payments (2025) · Telehealth · (619) 456-9292
Dr. Ronald Kwok, M.D.
El Cajon, CA · $152 in drug and device payments (2025) · Telehealth · (858) 499-2269
Dr. Samuel Ani
El Cajon, CA · No drug or device payments recorded (2025) · (619) 205-4585
Dr. Sarah Elfeky, M.D.
El Cajon, CA · No drug or device payments recorded (2025) · Telehealth · (619) 440-2751
Dr. Sohini Das, MD
El Cajon, CA · No drug or device payments recorded (2025) · (619) 515-2499
Dr. Steven Golbus, MD
El Cajon, CA · No drug or device payments recorded (2025) · (619) 440-4591
Dr. Tamara Mansy, MD
El Cajon, CA · No drug or device payments recorded (2025) · (619) 662-4100
Dr. Ahlam Sabri, M.D.
El Centro, CA · $296 in drug and device payments (2025) · (760) 339-7495
Dr. Akashdeep Dhaliwal, D.O.
El Centro, CA · $25 in drug and device payments (2025) · (760) 352-2257
Dr. Alidad Zadeh, D.O.
El Centro, CA · $739 in drug and device payments (2025) · Telehealth · (760) 339-2802
Dr. Emmanuel Beltran Gutierrez, MD
El Centro, CA · $52 in drug and device payments (2025) · Telehealth · (760) 234-2691

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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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.