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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. Anmol Chohan, M.D
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 747-3000
Dr. Anpreet Singh, M.D.
Davis, CA · $103 in drug and device payments (2025) · (530) 752-2300
Dr. Carl Wolf, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 758-4317
Dr. Catherine Dycaico, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 757-7070
Dr. Corinne Lee-guzman, D.O.
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 750-5904
Dr. Cynthia Whitcher, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 752-2300
Dr. David Dasilva, M.D.
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 750-5904
Dr. David Dycaico, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 757-7100
Dr. Dermet Fong, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 757-7070
Dr. Diane Dailey, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 757-7100
Dr. Edward Lee, MD
Davis, CA · $112 in drug and device payments (2025) · Telehealth · (530) 750-5904
Dr. Elena Whitcombe, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 750-7380
Dr. Elisabeth Abdin
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 750-5904
Dr. Harkamal Sandhu, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 750-5904
Dr. Joel Primus, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. John Li, M.D.
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 297-2330
Dr. John Takakuwa, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 757-7100
Dr. Levi Dodge, D.O
Davis, CA · No drug or device payments recorded (2025) · (916) 561-7793
Dr. Mahfuja Akanda, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 757-7100
Dr. Manjinder Sran, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 750-5226
Dr. Marie Tumusok, M.D.
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 750-5904
Dr. Mark Ho, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 757-7100
Dr. Michelle Chang-cheng, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 757-7100
Dr. Michelle Famula, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 752-2300
Dr. Mychall Raymond Pagulayan-sy, MD
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 747-3000
Dr. Peter Droubay, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 750-5904
Dr. Ramnik Bhogal, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 756-6440
Dr. Richard Blohm, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 750-5830
Dr. Roger Young, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 704-8770
Dr. Simranjit Randhawa, MD
Davis, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Thomas Alan, M.D.
Davis, CA · No drug or device payments recorded (2025) · Telehealth · (530) 747-3000
Dr. Andrew Leong, M.D.,
Delano, CA · No drug or device payments recorded (2025) · (661) 721-2345
Dr. Anil Gupta, M .D.
Delano, CA · No drug or device payments recorded (2025) · (661) 721-2345
Dr. Anuj Bansal, M.D.
Delano, CA · $125 in drug and device payments (2025) · Telehealth · (661) 718-4980
Dr. Jonathan Akanno, M.D.
Delano, CA · $105 in drug and device payments (2025) · (661) 721-6300
Dr. Marta Spaeth, M.D.
Delano, CA · No drug or device payments recorded (2025) · (661) 721-6300
Dr. Radhey Bansal, MD
Delano, CA · $132 in drug and device payments (2025) · (661) 725-7793
Dr. Ramani Chandrasekaran, MD
Delano, CA · No drug or device payments recorded (2025) · (661) 725-7211
Dr. Ramy Alnahhal, M.D.
Delano, CA · $52 in drug and device payments (2025) · (661) 725-7793
Dr. Ricardo Bernardino, M.D.
Delano, CA · No drug or device payments recorded (2025) · (661) 454-6511
Dr. Vijaykumar Patel, M.D.
Delano, CA · $125 in drug and device payments (2025) · (661) 725-7793
Dr. Aristotelis Laliotis, M.D.
Del Mar, CA · $444 in drug and device payments (2025) · Telehealth · (858) 499-2600
Dr. Brent Rathbun, M.D.
Del Mar, CA · No drug or device payments recorded (2025) · (858) 499-2600
Dr. Carl Trygstad, M.D.
Del Mar, CA · $111 in drug and device payments (2025) · (619) 994-2391
Dr. David Reynaldo, M.D.
Del Mar, CA · No drug or device payments recorded (2025) · Telehealth · (858) 499-2600
Dr. Steven Zizzo, MD MPH CCFP DABOM OH
Del Mar, CA · No drug or device payments recorded (2025) · (904) 907-9011
Dr. Valerie Youngblood, MD
Del Mar, CA · No drug or device payments recorded (2025) · (888) 673-6336
Dr. Maryam Poursartip, M.D.
Desert Hot Springs, CA · $39 in drug and device payments (2025) · (760) 676-5240
Dr. Richard Kyaw, MD
Desert Hot Springs, CA · $126 in drug and device payments (2025) · (760) 251-3401
Dr. Chandan Gowda, DO
Diamond Bar, CA · No drug or device payments recorded (2025) · (909) 856-0883

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.