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. Alexander Meilan, DOLa Jolla, CA · $216 in drug and device payments (2025) · Telehealth ·
(858) 554-9100 Dr. Alexis Rahal, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 455-9100 Dr. Ali Mirza, MDLa Jolla, CA · $17 in drug and device payments (2025) ·
(858) 657-8440 Dr. Amalio Telenti, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 232-4424 Dr. Ana Maria Crissien Martinez, M.D.La Jolla, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 554-3200 Dr. Andrew Scheinok, MDLa Jolla, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 554-3200 Dr. Annamaria Calabro, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-7201 Dr. Anne Liu, MDLa Jolla, CA · $370 in drug and device payments (2025) · Telehealth ·
(858) 554-3200 Dr. Anoop Muniyappa, M.D.La Jolla, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 657-8530 Dr. Anupama Kumar, M.D.La Jolla, CA · $14,354 in drug and device payments (2025) · Telehealth ·
(858) 822-6100 Dr. Arjun Sehgal, M.D.La Jolla, CA · $180 in drug and device payments (2025) · Telehealth ·
(858) 554-7100 Dr. Asha Robertson, M.D.La Jolla, CA · $657 in drug and device payments (2025) · Telehealth ·
(310) 720-4395 Dr. Ashkan Hayatdavoudi, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-7909 Dr. Biraj Garg, M.D.La Jolla, CA · $28 in drug and device payments (2025) · Telehealth ·
(858) 554-7222 Dr. Bradley Patay, M.D.La Jolla, CA · $167 in drug and device payments (2025) · Telehealth ·
(858) 554-7867 Dr. Brandon Ciaudelli, DOLa Jolla, CA · $40 in drug and device payments (2025) · Telehealth ·
(858) 824-5383 Dr. Brandon Williams, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(588) 626-7780 Dr. Bruce Covner, M.D.La Jolla, CA · $105 in drug and device payments (2025) ·
(858) 202-0011 Dr. Bryan Pham, MDLa Jolla, CA · $1,429 in drug and device payments (2025) ·
(858) 554-8788 Dr. Caleigh Horan, DOLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 452-1279 Dr. Catherine Challender, MD, MPHLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 626-7780 Dr. Chaitanya Malladi, MDLa Jolla, CA · $15,637 in drug and device payments (2025) ·
(858) 657-8530 Dr. Christine Bojanowski, MDLa Jolla, CA · $37 in drug and device payments (2025) ·
(619) 290-7949 Dr. Christopher Rice, MDLa Jolla, CA · $28 in drug and device payments (2025) ·
(858) 452-1279 Dr. Christopher Walsh, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(410) 428-7710 Dr. Christopher Yokoyama, M.D.La Jolla, CA · $21 in drug and device payments (2025) · Telehealth ·
(858) 554-7227 Dr. Colin Haggerty, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 457-5333 Dr. Connie DuongLa Jolla, CA · $17 in drug and device payments (2025) ·
(858) 554-7272 Dr. Courtney Hanson, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-8000 Dr. Dana Vaccari, MDLa Jolla, CA · $42 in drug and device payments (2025) · Telehealth ·
(858) 554-7222 Dr. Danelle James, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 822-7894 Dr. Daniel Jones, M.D.La Jolla, CA · $1,457 in drug and device payments (2025) · Telehealth ·
(858) 625-7200 Dr. Daniel Pinney, M.D.La Jolla, CA · $25 in drug and device payments (2025) ·
(858) 554-8862 Dr. David Clayton, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-9100 Dr. David Hirshfield, MDLa Jolla, CA · $1,359 in drug and device payments (2025) · Telehealth ·
(858) 554-1212 Dr. David Katz, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 454-5054 Dr. David Savage, MD, PHDLa Jolla, CA · $6,361 in drug and device payments (2025) · Telehealth ·
(858) 554-8788 Dr. David Wetherhold, M.D.La Jolla, CA · $48 in drug and device payments (2025) · Telehealth ·
(858) 824-5383 Dr. Derek Jones, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-7909 Dr. Edward Brown, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-8000 Dr. Edward Denison, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 454-5482 Dr. Edward Kocharian, M.D.La Jolla, CA · $137 in drug and device payments (2025) · Telehealth ·
(858) 457-5555 Dr. Eva Abbo, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 454-9045 Dr. Fouad Moawad, M.D.La Jolla, CA · $205,553 in drug and device payments (2025) · Telehealth ·
(858) 824-4151 Dr. Gary Levinson, M.D.La Jolla, CA · $1,243 in drug and device payments (2025) · Telehealth ·
(858) 626-9100 Dr. Gaston Molina, M.D.La Jolla, CA · $378 in drug and device payments (2025) · Telehealth ·
(858) 554-7474 Dr. Gregg Silverman, M.D.La Jolla, CA · $8,992 in drug and device payments (2025) ·
(858) 534-5439 Dr. Greg Lewis, M.D.La Jolla, CA · $166 in drug and device payments (2025) ·
(858) 626-7780 Dr. Gregory Vosganian, M.D.La Jolla, CA · $135 in drug and device payments (2025) ·
(858) 554-8116 Dr. Harry Albers, M.D.La Jolla, CA · $285 in drug and device payments (2025) ·
(858) 321-2150 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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