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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. John Cooper, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 241-4331
Dr. Joon Bahng, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 240-8659
Dr. Joyce Show, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 790-7611
Dr. Karo Isagholian, M.D.
Glendale, CA · $2,243 in drug and device payments (2025) · (818) 244-8241
Dr. Laila Hanna, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 843-6640
Dr. Lim Taw, M.D.
Glendale, CA · $498 in drug and device payments (2025) · Telehealth · (818) 241-2106
Dr. Marco Gomez Garcia, M.D.
Glendale, CA · $268 in drug and device payments (2025) · (818) 240-4031
Dr. Marco Viruez, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 396-8050
Dr. Mark Clark, MD
Glendale, CA · No drug or device payments recorded (2025) · (310) 445-5999
Dr. Mehdi Razeghi
Glendale, CA · No drug or device payments recorded (2025) · (818) 637-2000
Dr. Mikhail Blinchik, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 637-2000
Dr. Moses Lee, D.O.
Glendale, CA · $137 in drug and device payments (2025) · (818) 839-5200
Dr. Moshe Freiberg, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 254-1500
Dr. Narbeh Tovmassian, MD
Glendale, CA · $315 in drug and device payments (2025) · Telehealth · (818) 246-8000
Dr. Narineh Yermian, DO
Glendale, CA · $66 in drug and device payments (2025) · Telehealth · (818) 246-8000
Dr. Nathan Miu, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (877) 340-3290
Dr. Neiveen Peter, M.D.
Glendale, CA · $22 in drug and device payments (2025) · (818) 416-6338
Dr. Nirupa Vignarajan, M.D.
Glendale, CA · $185 in drug and device payments (2025) · Telehealth · (818) 553-6666
Dr. Noah Fu, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 246-5900
Dr. Patricia Duarte, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 790-1616
Dr. Paul Duron, M.D.
Glendale, CA · $22 in drug and device payments (2025) · Telehealth · (818) 247-9717
Dr. Prasanta Nath, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 637-2021
Dr. Robert Allen, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (310) 703-4841
Dr. Roy Fu, M.D.
Glendale, CA · $283 in drug and device payments (2025) · (818) 507-4617
Dr. Ruzanna Alexanian, M.D.
Glendale, CA · $141 in drug and device payments (2025) · Telehealth · (818) 246-5900
Dr. Saline Ayvazyan
Glendale, CA · $263 in drug and device payments (2025) · (818) 249-1300
Dr. Samir Sawiris, M.D.
Glendale, CA · $161 in drug and device payments (2025) · (818) 790-1088
Dr. Serafin Garcia, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 242-4966
Dr. Sera Ramadan, D.O.
Glendale, CA · $80 in drug and device payments (2025) · Telehealth · (213) 238-5887
Dr. Stephanie Rade, D.O.
Glendale, CA · No drug or device payments recorded (2025) · (818) 790-7098
Dr. Thomas Pocock, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 790-6700
Dr. Tze Dang, MD
Glendale, CA · No drug or device payments recorded (2025) · Telehealth · (818) 545-7117
Dr. Vahe Mkhitaryan
Glendale, CA · $330 in drug and device payments (2025) · Telehealth · (818) 220-7191
Dr. Victoria Altree, M.D.
Glendale, CA · $115 in drug and device payments (2025) · (818) 790-0914
Dr. Vince Patrick Cacho, MD
Glendale, CA · $146 in drug and device payments (2025) · Telehealth · (188) 442-3008
Dr. Wageh Azer, M.D.
Glendale, CA · No drug or device payments recorded (2025) · Telehealth · (818) 545-7117
Dr. Warren Hosseinion, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 507-4617
Dr. William Convalecer, M.D.
Glendale, CA · No drug or device payments recorded (2025) · (818) 409-8000
Dr. Yasser Shaweesh, M.D.
Glendale, CA · $160 in drug and device payments (2025) · (818) 839-5200
Dr. Zareh Pirjanian, MD
Glendale, CA · No drug or device payments recorded (2025) · (818) 838-4587
Dr. Zulfiqar Ahmed, MD
Glendale, CA · $1,209 in drug and device payments (2025) · Telehealth · (818) 244-7771
Dr. Cristina Christopher, PAC
Glendora, CA · $882 in drug and device payments (2025) · (626) 335-4041
Dr. Galib Mirza, DO
Glendora, CA · $22 in drug and device payments (2025) · Telehealth · (626) 963-4149
Dr. Ibrahim Hanna, M.D.
Glendora, CA · $976 in drug and device payments (2025) · Telehealth · (626) 335-4041
Dr. Ihsan Hakimeh, MD
Glendora, CA · No drug or device payments recorded (2025) · Telehealth · (626) 852-4923
Dr. Marc Ghabbour, M.D.
Glendora, CA · No drug or device payments recorded (2025) · Telehealth · (626) 335-4079
Dr. Oliver Solomon, DO
Glendora, CA · No drug or device payments recorded (2025) · (626) 963-8588
Dr. Raymundo Bautista, MD
Glendora, CA · $1,598 in drug and device payments (2025) · Telehealth · (626) 914-3871
Dr. Virginia Barrett, M.D.
Glendora, CA · No drug or device payments recorded (2025) · (626) 335-4610
Dr. Zhi-wen Lu, M.D.
Glendora, CA · $120 in drug and device payments (2025) · (626) 963-1413

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.