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. Jian Chen, M.D.Santa Paula, CA · $599 in drug and device payments (2025) · Telehealth ·
(805) 525-7131 Dr. Michael Swartout, M.D.Santa Paula, CA · No drug or device payments recorded (2025) ·
(805) 933-6622 Dr. Michelle Azimov, M.D.Santa Paula, CA · No drug or device payments recorded (2025) ·
(805) 933-8600 Dr. Oluwatumininu Johnson, MDSanta Paula, CA · No drug or device payments recorded (2025) ·
(805) 933-1122 Dr. Orlanda Ferreira, MDSanta Paula, CA · $186 in drug and device payments (2025) · Telehealth ·
(805) 507-2242 Dr. Robert Dekkers, M.D.Santa Paula, CA · $158 in drug and device payments (2025) ·
(805) 525-7131 Dr. Adina Logan, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) · Telehealth ·
(707) 308-2800 Dr. Amrita Dutta-choudhury, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Anh Hoang, DOSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 547-4608 Dr. Ann Press, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 576-4000 Dr. Archana Goyal, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Asia DowningSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 547-5437 Dr. Aynna Sae, MDSanta Rosa, CA · $31 in drug and device payments (2025) ·
(707) 525-1250 Dr. Benjamin Hernandez Velasco, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 547-5437 Dr. Bruce Tucker, M.D.Santa Rosa, CA · $58 in drug and device payments (2025) · Telehealth ·
(707) 544-3411 Dr. Bryan Rimel, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 576-4000 Dr. Caitlin Mccarthy, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Catherine Davis, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 544-3411 Dr. Cheri Quincy, D.O.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 542-4800 Dr. Cheryl Green, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Christina Fritsch, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. David Capaccio, DOSanta Rosa, CA · $71 in drug and device payments (2025) ·
(707) 547-5437 Dr. David Chan, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. David Charp, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 542-1207 Dr. Dean Thompson, MDSanta Rosa, CA · $18 in drug and device payments (2025) · Telehealth ·
(707) 571-4000 Dr. Derek Gong, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 869-2849 Dr. Dominic Picetti, MDSanta Rosa, CA · $125 in drug and device payments (2025) ·
(707) 576-4000 Dr. Elizabeth Phillips, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Ellen Merenbach, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Emily Gonzalez, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Eran Matalon, M.D.Santa Rosa, CA · $91 in drug and device payments (2025) · Telehealth ·
(707) 545-1700 Dr. Gary Nichols, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) · Telehealth ·
(707) 308-2815 Dr. George Bisbee, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 544-3411 Dr. Gloria Meyer, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Harry Carr, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 694-8277 Dr. Jacqueline Skvaril, M.D.Santa Rosa, CA · $34 in drug and device payments (2025) · Telehealth ·
(707) 544-3411 Dr. James Lee, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Jeffrey Xu, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(408) 382-9190 Dr. Jennifer Hubert, D.O.Santa Rosa, CA · $543 in drug and device payments (2025) · Telehealth ·
(707) 579-5520 Dr. Jennifer Hung, D.O.Santa Rosa, CA · $120 in drug and device payments (2025) ·
(707) 687-6125 Dr. Jim Lin, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 547-4608 Dr. Joel Paine, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 303-8344 Dr. John Hurwitz, DOSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 583-1805 Dr. Johnson Clark, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Jonathan Hodgkin, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Jonathan Morse, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 888-9682 Dr. Karlyn Young, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 393-4000 Dr. Kelly Bastoni, MDSanta Rosa, CA · No drug or device payments recorded (2025) ·
(707) 571-4000 Dr. Kent Matsuda, M.D.Santa Rosa, CA · $1,638 in drug and device payments (2025) ·
(707) 546-2506 Dr. Kieran Doyle, MDSanta Rosa, CA · $767 in drug and device payments (2025) ·
(707) 393-4000 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.
Related reading on HealthcareDiscovery.AI
Internal Medicine in all 50 states Search all 17,715 in the directory Ask Zach for help choosing
Related
