HealthcareDiscovery.AI / Doctors / California / Internal Medicine

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. Seiya Tokunaga, DO
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2505
Dr. Sergio Neira, M.D.
Oxnard, CA · $2,726 in drug and device payments (2025) · (805) 981-8300
Dr. Shiu Man Lee, M.D.
Oxnard, CA · No drug or device payments recorded (2025) · (805) 486-1914
Dr. Sukhpreet Walia, M.D.
Oxnard, CA · $1,952 in drug and device payments (2025) · (805) 983-0521
Dr. Sulaiman Barkho, MD
Oxnard, CA · $121 in drug and device payments (2025) · (805) 988-2500
Dr. Tessa Shuler, FNP-C
Oxnard, CA · $1,240 in drug and device payments (2025) · Telehealth · (805) 983-0425
Dr. Victor Alcocer, M.D.
Oxnard, CA · $2,638 in drug and device payments (2025) · Telehealth · (805) 981-8300
Dr. Vincent Rowley
Oxnard, CA · $81 in drug and device payments (2025) · (805) 988-2500
Dr. William Rajala, M.D.
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-8100
Dr. Yennifer Gil Castano
Oxnard, CA · $117 in drug and device payments (2025) · (805) 986-5551
Dr. Yvonne Sanchez, MD
Oxnard, CA · No drug or device payments recorded (2025) · (805) 604-1216
Dr. Eleanor Ramos
Pacifica, CA · No drug or device payments recorded (2025) · (650) 922-1481
Dr. Cassandra Ohlsen, MD
Pacific Grove, CA · No drug or device payments recorded (2025) · (831) 277-2220
Dr. David Wright, M.D.
Pacific Grove, CA · No drug or device payments recorded (2025) · (831) 717-4444
Dr. James Grant, MD
Pacific Grove, CA · No drug or device payments recorded (2025) · (831) 373-2322
Dr. Damon Raskin, MD
Pacific Palisades, CA · $20,377 in drug and device payments (2025) · Telehealth · (310) 459-4333
Dr. Gary Green, MD
Pacific Palisades, CA · No drug or device payments recorded (2025) · Telehealth · (310) 829-8923
Dr. Howard Lehrhoff, M.D.
Pacific Palisades, CA · No drug or device payments recorded (2025) · (310) 459-9002
Dr. Julie Ma, MD
Pacific Palisades, CA · $136 in drug and device payments (2025) · Telehealth · (310) 459-7736
Dr. Liane Zwetzich, MD
Pacific Palisades, CA · $273 in drug and device payments (2025) · Telehealth · (917) 373-1338
Dr. Mihaela Balica, MD
Pacific Palisades, CA · $153 in drug and device payments (2025) · Telehealth · (310) 829-8923
Dr. Roberta Smith, MD
Pacific Palisades, CA · $441 in drug and device payments (2025) · (310) 459-4321
Dr. Robert Saltzman, M.D. INC.
Pacific Palisades, CA · No drug or device payments recorded (2025) · (310) 550-8028
Dr. David Mcintosh, M.D.
Pacoima, CA · No drug or device payments recorded (2025) · (818) 896-0531
Dr. Adriana Valdovinos, M.D.
Palmdale, CA · No drug or device payments recorded (2025) · Telehealth · (661) 533-7534
Dr. Anas Entabi, M.D.
Palmdale, CA · $1,301 in drug and device payments (2025) · (661) 272-3777
Dr. Arsineh Artounian Savarani, DO
Palmdale, CA · $148 in drug and device payments (2025) · (661) 382-5000
Dr. Camellia Babaie, M.D.
Palmdale, CA · $183 in drug and device payments (2025) · (661) 214-7718
Dr. Emel Kasgarli, M.D.
Palmdale, CA · No drug or device payments recorded (2025) · (661) 225-3000
Dr. Gifty-maria Ntim, M.D.
Palmdale, CA · No drug or device payments recorded (2025) · Telehealth · (661) 575-0009
Dr. Hamza Gohar, D.O.
Palmdale, CA · $20 in drug and device payments (2025) · (661) 382-5000
Dr. Hovsep Mahdessian, MD
Palmdale, CA · $44 in drug and device payments (2025) · (661) 273-5888
Dr. Joan Chapman, D.O.
Palmdale, CA · $20 in drug and device payments (2025) · (661) 382-5000
Dr. Kain Kumar, M.D., PHD
Palmdale, CA · $17 in drug and device payments (2025) · (661) 947-5600
Dr. Lucjan Krzysiak, MD
Palmdale, CA · No drug or device payments recorded (2025) · (661) 273-0100
Dr. Md Mashiul Alam, MD
Palmdale, CA · No drug or device payments recorded (2025) · Telehealth · (833) 574-2273
Dr. Naaiko Yorichika, MD
Palmdale, CA · No drug or device payments recorded (2025) · Telehealth · (833) 574-2273
Dr. Pamela De Silva, MD
Palmdale, CA · $272 in drug and device payments (2025) · Telehealth · (661) 726-6255
Dr. Sadhana Kamath, M.D.
Palmdale, CA · No drug or device payments recorded (2025) · (661) 272-1400
Dr. Shahid Khan, M.D.
Palmdale, CA · No drug or device payments recorded (2025) · (661) 225-3001
Dr. Sonia Sethi, M.D.
Palmdale, CA · $132 in drug and device payments (2025) · (661) 951-3100
Dr. Taher Katouzian
Palmdale, CA · No drug or device payments recorded (2025) · (661) 382-5000
Dr. Thinn Wah, MD
Palmdale, CA · $346 in drug and device payments (2025) · (661) 382-6140
Dr. Vasuki Aravagiri
Palmdale, CA · No drug or device payments recorded (2025) · Telehealth · (661) 272-5001
Dr. Vasuki Daram, MD
Palmdale, CA · No drug or device payments recorded (2025) · (661) 726-3800
Dr. Wah Wah Chu, MD
Palmdale, CA · $19 in drug and device payments (2025) · (661) 273-0100
Dr. Yunha Kim
Palmdale, CA · $329 in drug and device payments (2025) · (661) 382-5000
Dr. Alfonso Roger, MD
Palm Desert, CA · No drug or device payments recorded (2025) · (626) 488-3756
Dr. Amir Hossein Mortazavientesab, M.D.
Palm Desert, CA · $101 in drug and device payments (2025) · (760) 340-2682
Dr. Asma Kazi, M.D.
Palm Desert, CA · $206 in drug and device payments (2025) · Telehealth · (760) 895-2600

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

Related

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.