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 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. Archana Sridhar, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4800 Dr. Arpna Bhola, D.O.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 805-1925 Dr. Arthur Bakal, MDOakland, CA · $148 in drug and device payments (2025) ·
(510) 752-1000 Dr. Arya Mansouri, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 869-6883 Dr. Ashok Pai, MDOakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 752-1000 Dr. Asma Asyyed, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 853-0725 Dr. Astha Kanani, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 535-3500 Dr. Avani PatelOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4800 Dr. Awista Ayuby, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-7297 Dr. Barbara Towner-winchester, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 563-4300 Dr. Barooyr Zorthian, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4323 Dr. Bay Dang-vu, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 893-0683 Dr. Benjamin Beers, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 238-5400 Dr. Benjamin Sokoloff, D.O.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Beth Schweitzer, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 563-4300 Dr. Bhrett Lash, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 535-4400 Dr. Bill Longwell, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 909-6078 Dr. Blake Gregory, M.D.Oakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(214) 537-8323 Dr. Bonnie Chen, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Brent Scharschmidt, M.D.Oakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 752-1000 Dr. Brian Cheng, MDOakland, CA · $221 in drug and device payments (2025) · Telehealth ·
(510) 752-1000 Dr. Bruce Tatro, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 436-9000 Dr. Bruketawit Girma, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-5039 Dr. Carl Swanson, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Carol Jessop, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 547-5111 Dr. Chelsea Rhoades, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4887 Dr. Cheryl Tanouye, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Chhavi Patel, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4800 Dr. Christian Lee Rodriguez, M.D.Oakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 752-1000 Dr. Christina Goette, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4800 Dr. Christine Shieh, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Christopher Bautista, M.D.Oakland, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 204-6699 Dr. Christopher Hall, M.D. Dr. Christopher John Co, M.DOakland, CA · No drug or device payments recorded (2025) ·
(510) 735-3888 Dr. Christopher Johnson, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 Dr. Claire Camaya, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 437-8500 Dr. Claire Horton, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 535-3500 Dr. Clariza Joyce Borile, MD, MSOakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4588 Dr. Clayton Chan, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 986-6830 Dr. Coleman GrossOakland, CA · No drug or device payments recorded (2025) ·
(510) 832-2663 Dr. Colton TomOakland, CA · No drug or device payments recorded (2025) ·
(510) 926-0422 Dr. Connor Hannon, MDOakland, CA · $750 in drug and device payments (2025) ·
(510) 752-7826 Dr. Constance Noel, DOOakland, CA · $50 in drug and device payments (2025) · Telehealth ·
(510) 752-1000 Dr. Corina Wang, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 752-1000 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.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
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.
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