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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. Shannon Pai, MD
Long Beach, CA · $31 in drug and device payments (2025) · (562) 305-4924
Dr. Shanti Nilakantan, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 429-2473
Dr. Shawn Pakravan
Long Beach, CA · No drug or device payments recorded (2025) · (310) 721-4395
Dr. Siamak Rouzroch, MD
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 494-8008
Dr. Simone Powell, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 491-9140
Dr. Sohrab Tanavoli, D.O
Long Beach, CA · No drug or device payments recorded (2025) · (562) 826-8000
Dr. Sonali Saluja, MD
Long Beach, CA · No drug or device payments recorded (2025) · (213) 669-6453
Dr. Son Nguyen, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 424-8814
Dr. Stella Trosman, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 432-5661
Dr. Stephen Hryniewicki, M.D.
Long Beach, CA · $199 in drug and device payments (2025) · (562) 595-8549
Dr. Steven Lake, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 423-6441
Dr. Susan Hopp-midani, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 826-8000
Dr. Tak Lau, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 597-8738
Dr. Tatiana Barrera, MD
Long Beach, CA · No drug or device payments recorded (2025) · (310) 563-4800
Dr. Tesfaye Leka, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 481-3500
Dr. Thomas Hendon, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 597-5549
Dr. Thomas Mccloy, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 437-6213
Dr. Tina Kitajima, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 426-3333
Dr. Tom Ky, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 933-2000
Dr. Tyler De Jong, M.D.
Long Beach, CA · $199 in drug and device payments (2025) · Telehealth · (562) 433-7496
Dr. Vannarith So, MD, MPH
Long Beach, CA · $159 in drug and device payments (2025) · Telehealth · (562) 986-6138
Dr. Van Pham, D.O
Long Beach, CA · $189 in drug and device payments (2025) · Telehealth · (657) 241-8990
Dr. Vasanthi Jeyakumar, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 429-2473
Dr. Vatche Satamian, DO
Long Beach, CA · No drug or device payments recorded (2025) · (562) 491-9049
Dr. Victoria Leigh, D.O
Long Beach, CA · $104 in drug and device payments (2025) · Telehealth · (562) 305-4924
Dr. Vincent Kwok, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 826-8000
Dr. Vinh Ngo, M.D.
Long Beach, CA · $71 in drug and device payments (2025) · (562) 826-8000
Dr. Violeta Vicencio, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 676-4596
Dr. Visal Nga, D.O
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 599-5300
Dr. Wafa Mohammed, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 491-9350
Dr. Wail Shoga, D.O.
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 429-2473
Dr. Willard Maletz, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 989-6457
Dr. Wisam Khader, D.O.
Long Beach, CA · No drug or device payments recorded (2025) · (562) 491-9000
Dr. Wishanth Gooneratne, MBCHB
Long Beach, CA · $118 in drug and device payments (2025) · (562) 491-9140
Dr. Youssef Awad, MD
Long Beach, CA · $144 in drug and device payments (2025) · Telehealth · (562) 989-1200
Dr. Zeeshan Siddiqui, MD
Long Beach, CA · $1,140 in drug and device payments (2025) · (909) 534-5856
Dr. Zerin Rahman, MD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 597-4840
Dr. Zsuzsanna Sandor, MD, PHD
Long Beach, CA · No drug or device payments recorded (2025) · (562) 826-8000
Dr. Aaron Richler, M.D.
Los Alamitos, CA · $140 in drug and device payments (2025) · (562) 596-1667
Dr. Alexandra Chrysanthis, MD
Los Alamitos, CA · $365 in drug and device payments (2025) · (562) 795-6406
Dr. Barry Allswang, MD
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 594-9546
Dr. Carlos Arguedas
Los Alamitos, CA · $1,098 in drug and device payments (2025) · Telehealth · (562) 429-1200
Dr. Daniel Kim
Los Alamitos, CA · No drug or device payments recorded (2025) · (714) 794-2777
Dr. Etsegenet Ayele, M.D.
Los Alamitos, CA · $916 in drug and device payments (2025) · (562) 598-0600
Dr. Gerald Cohen, MD
Los Alamitos, CA · $45 in drug and device payments (2025) · (562) 594-9546
Dr. Harold Lin, M.D.
Los Alamitos, CA · No drug or device payments recorded (2025) · (562) 594-6693
Dr. Heena Contractor, M.D.
Los Alamitos, CA · $582 in drug and device payments (2025) · Telehealth · (562) 596-1667
Dr. Hichang Choi, MD
Los Alamitos, CA · $858 in drug and device payments (2025) · (562) 799-6000
Dr. Hossein Eftekhari, MD
Los Alamitos, CA · $851 in drug and device payments (2025) · (832) 483-1509
Dr. Jack Rubin, M.D.
Los Alamitos, CA · $1,039 in drug and device payments (2025) · Telehealth · (562) 596-1667

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.