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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. Arousha Davatgarzadeh, M.D.
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 222-2605
Dr. Ashok Lall, M.D.
Valencia, CA · $54 in drug and device payments (2025) · Telehealth · (702) 419-6670
Dr. Bhuvaneswari Gowthaman, M.D.
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 222-2605
Dr. Christopher Avelino, MD
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 222-2605
Dr. Clement Kim, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 222-2658
Dr. David Campa, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 287-1551
Dr. Deepthi Karanam, M.D.
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 222-2600
Dr. Denghui Guo, MD
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 753-5464
Dr. Eric Fernandez, M.D.
Valencia, CA · $845 in drug and device payments (2025) · Telehealth · (661) 222-2605
Dr. Eugene Dorio, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 254-5554
Dr. Eugene Palliccia, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 284-3122
Dr. George Melikian, M.D.
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (818) 869-7049
Dr. Ifeoma Ugochukwu, M.D.
Valencia, CA · $86 in drug and device payments (2025) · (818) 613-7158
Dr. Joseph Lavi, M.D.
Valencia, CA · $1,273 in drug and device payments (2025) · (661) 254-9950
Dr. Kerry Clark, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 284-3100
Dr. Kirti Talole, MD
Valencia, CA · $15 in drug and device payments (2025) · (818) 758-9588
Dr. Ladan Samadi, M.D.
Valencia, CA · $187 in drug and device payments (2025) · (661) 259-9979
Dr. Lakhbinder Dhanda, M.D.
Valencia, CA · $715 in drug and device payments (2025) · (661) 222-7333
Dr. Laura Meisel, M.D.
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 284-3100
Dr. Lena Arous, M.D.
Valencia, CA · $722 in drug and device payments (2025) · (661) 222-2605
Dr. Luciano Castaneda, MD
Valencia, CA · No drug or device payments recorded (2025) · (661) 753-5464
Dr. Matthew Mccullough, M.D.
Valencia, CA · $30 in drug and device payments (2025) · (661) 253-5851
Dr. Mufaddal Dahodwala
Valencia, CA · $19 in drug and device payments (2025) · Telehealth · (661) 753-5464
Dr. Nastran Hashemi, M.D.
Valencia, CA · $774 in drug and device payments (2025) · (310) 954-7740
Dr. Navid Mahabadi, DO
Valencia, CA · $740 in drug and device payments (2025) · (661) 254-0172
Dr. Nina Levy, MD
Valencia, CA · No drug or device payments recorded (2025) · (661) 222-2600
Dr. Rena Callahan, M.D.
Valencia, CA · $107,487 in drug and device payments (2025) · Telehealth · (661) 255-5350
Dr. Robert Kozlowski, MD
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 284-3100
Dr. Sabrin Sidhu, MD
Valencia, CA · No drug or device payments recorded (2025) · Telehealth · (661) 753-5464
Dr. Siamak Basiratmand, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-5851
Dr. Stephanie Lafayette, MD
Valencia, CA · No drug or device payments recorded (2025) · (661) 295-7823
Dr. Tiffany Hogan, M.D.
Valencia, CA · $29 in drug and device payments (2025) · (949) 322-4562
Dr. Yidi Xu, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 222-2600
Dr. Adebusola Adesina
Vallejo, CA · No drug or device payments recorded (2025) · (916) 734-2737
Dr. Angelin Cheng
Vallejo, CA · No drug or device payments recorded (2025) · Telehealth · (707) 651-1000
Dr. Aye Kyu, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Becky Lee, MD
Vallejo, CA · No drug or device payments recorded (2025) · Telehealth · (707) 651-1000
Dr. Carlo Tarantino, MD
Vallejo, CA · No drug or device payments recorded (2025) · Telehealth · (707) 651-1000
Dr. Cathleen Coulman, M.D.
Vallejo, CA · $50 in drug and device payments (2025) · (707) 654-1170
Dr. Chude Anagor, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Daniel Taylor, D.O.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. David Crawford, MD
Vallejo, CA · $212 in drug and device payments (2025) · (707) 651-1000
Dr. Deborah Valtierra, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-2440
Dr. Deepa Savani, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Diljit Karayil, M.D
Vallejo, CA · No drug or device payments recorded (2025) · Telehealth · (707) 651-1025
Dr. Elaine Kau, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Elizabeth Chin
Vallejo, CA · $32 in drug and device payments (2025) · (707) 651-1000
Dr. Eric Feng, D.O
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Frank Shic, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Fred Bayon, M.D.
Vallejo, CA · $2,084 in drug and device payments (2025) · Telehealth · (707) 558-8699

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.