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. David HaddadCamarillo, CA · No drug or device payments recorded (2025) ·
(805) 402-5600 Dr. Edwina Skinner, M.D.Camarillo, CA · $34 in drug and device payments (2025) · Telehealth ·
(805) 384-8071 Dr. Elizabeth Nguyen, MDCamarillo, CA · $498 in drug and device payments (2025) ·
(805) 389-0099 Dr. Erin Baldwin, MDCamarillo, CA · No drug or device payments recorded (2025) ·
(805) 384-8071 Dr. F. Halcomb, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 987-0158 Dr. Gary Lieb, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 383-2100 Dr. Jeffrey Allan, MDCamarillo, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 484-0055 Dr. Jocelyn Napod, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 384-8071 Dr. Karen Fields, MDCamarillo, CA · No drug or device payments recorded (2025) ·
(818) 788-3308 Dr. Ksenija Peharda, MDCamarillo, CA · No drug or device payments recorded (2025) ·
(805) 384-1350 Dr. Mark Stokols, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 384-8071 Dr. Naser Jamal, D.O.Camarillo, CA · $34 in drug and device payments (2025) · Telehealth ·
(805) 384-8071 Dr. Nisha Sharma, MDCamarillo, CA · $34 in drug and device payments (2025) · Telehealth ·
(805) 384-8071 Dr. Patrick Siu, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 383-4510 Dr. Paul Morin, M.D.Camarillo, CA · $268 in drug and device payments (2025) ·
(805) 484-7448 Dr. Ragaa Ibrahim, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 987-2679 Dr. Sabrina Barata, MDCamarillo, CA · $738 in drug and device payments (2025) · Telehealth ·
(805) 384-8071 Dr. Sabrina Brana, M.D.Camarillo, CA · $462 in drug and device payments (2025) · Telehealth ·
(805) 384-8071 Dr. Sudha Reghunathan, M.D.Camarillo, CA · No drug or device payments recorded (2025) ·
(805) 445-4189 Dr. Yumin Qiu, M.D.Camarillo, CA · $62 in drug and device payments (2025) ·
(805) 484-4612 Dr. Anuradha Shanmugham, M.D.Cameron Park, CA · No drug or device payments recorded (2025) ·
(530) 672-7000 Dr. Connie Burgeson, MDCameron Park, CA · $22 in drug and device payments (2025) ·
(530) 672-7000 Dr. Donna Jordan, M.D.Cameron Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(530) 676-4122 Dr. Helen Cheng, M.D.Cameron Park, CA · No drug or device payments recorded (2025) · Telehealth ·
(530) 676-7737 Dr. Swetha Mudunuri, M.D.,Cameron Park, CA · $213 in drug and device payments (2025) ·
(530) 627-7000 Dr. Wendy Dyer, M.D.Cameron Park, CA · No drug or device payments recorded (2025) ·
(530) 676-7337 Dr. Andrew Hwang, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Aradhana Kar, MDCampbell, CA · $1,371 in drug and device payments (2025) · Telehealth ·
(408) 688-2451 Dr. Asmita Patel, MDCampbell, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 236-6400 Dr. Debra Fetters, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Divya Satia, MDCampbell, CA · $147 in drug and device payments (2025) ·
(408) 236-6400 Dr. Inna Spier, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. James Kastelman, MDCampbell, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 236-6400 Dr. Joanne Quan, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Joyce Orndorff, M.D.Campbell, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 871-9440 Dr. Kavita Sharma, M.D.Campbell, CA · $48 in drug and device payments (2025) ·
(408) 376-3380 Dr. Lily Boris, M.D.Campbell, CA · No drug or device payments recorded (2025) ·
(408) 874-1823 Dr. Lily Lee, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Manasi Nabar, M.D.Campbell, CA · No drug or device payments recorded (2025) ·
(408) 871-6500 Dr. Marcel Reichert, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Michael Ponedelnikov, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 378-2215 Dr. Michael Stein, M.D.Campbell, CA · No drug or device payments recorded (2025) ·
(408) 871-9440 Dr. Mike Gorenchtein, M.B.,B.S.Campbell, CA · $348 in drug and device payments (2025) · Telehealth ·
(408) 376-3350 Dr. Philip Creger, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Rupinder Kaur, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Sailaja Bommakanti, M.D.Campbell, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 357-1410 Dr. Sameer Awsare, MDCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Shan Zhu, MDCampbell, CA · $125 in drug and device payments (2025) · Telehealth ·
(408) 236-6400 Dr. Stacy Tong, DOCampbell, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Suvarchala KompellaCampbell, CA · $32 in drug and device payments (2025) ·
(408) 368-7660 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
