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. Frances Herb, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-4666 Dr. Gabriel Fischer, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(207) 204-2885 Dr. Grace Carlson, MDBerkeley, CA · $3,369 in drug and device payments (2025) ·
(510) 204-1893 Dr. Guy Micco, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 643-0667 Dr. Harneet Chopra, MDBerkeley, CA · $1,216 in drug and device payments (2025) · Telehealth ·
(510) 766-0342 Dr. Hideyuki Sakata, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 525-8980 Dr. Hiep Nguyen, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 525-8980 Dr. Hong Wu, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 525-8980 Dr. James Whitmer, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 843-5213 Dr. Janie Bryant, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-4444 Dr. Jessica Furer, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 601-6060 Dr. Jessica LiuBerkeley, CA · $28 in drug and device payments (2025) · Telehealth ·
(510) 981-4100 Dr. Ji Chen, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 601-6060 Dr. Jonathan Hollander, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 306-2488 Dr. Jonathan Noble, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 848-7070 Dr. Julie Omelveny, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 848-7977 Dr. Kathryn Drinkard, MDBerkeley, CA · $60 in drug and device payments (2025) ·
(510) 848-7977 Dr. Laura Wilson, M.D.Berkeley, CA · $48 in drug and device payments (2025) ·
(650) 255-0279 Dr. Linda Tran, MD, MPHBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 525-8980 Dr. Lisa Chandler, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-1893 Dr. Lori Mouratoff, M.D.Berkeley, CA · $17 in drug and device payments (2025) ·
(510) 224-4181 Dr. Louis Wu, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 883-9883 Dr. Lynne Alper, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 643-7117 Dr. Maria Rojas D'croz, M.D.Berkeley, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 525-8980 Dr. Melanie ManakuBerkeley, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 204-5600 Dr. Michael Sansait, D.O.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-4444 Dr. Michelle Shute, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-8110 Dr. Mildred Kawachi, M. D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 540-8777 Dr. Naunihal Virdi, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-1893 Dr. Neelu Kaliani, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-5514 Dr. Neil Gozan, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 898-1123 Dr. Nicola Hanchock, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 845-7751 Dr. Nikie Parikh, M.DBerkeley, CA · $14 in drug and device payments (2025) · Telehealth ·
(510) 204-5514 Dr. Pardis Poorzand, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 260-5996 Dr. Patricia Rochette, D.O.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 849-8245 Dr. Payam Parvinchiha, M.D.Berkeley, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 929-1400 Dr. Rachel Fogel, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 601-6060 Dr. Ranjana Saxena, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 525-8980 Dr. Robert Hiatt, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 652-7380 Dr. Runa Basu, D.O.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 771-3000 Dr. Sara Bosomworth, DOBerkeley, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 204-5600 Dr. Sarah Dobro, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 738-0290 Dr. Scott Swanson, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 642-9139 Dr. Shine Nee Teng, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 665-8886 Dr. Susan Londerville, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 868-4181 Dr. Suzanne Bodor-billings, M.D.Berkeley, CA · $256 in drug and device payments (2025) · Telehealth ·
(510) 848-7977 Dr. Talia Gracer, M.D.Berkeley, CA · $23 in drug and device payments (2025) · Telehealth ·
(510) 985-5020 Dr. Than Nguyen, D.O.Berkeley, CA · $185 in drug and device payments (2025) · Telehealth ·
(510) 204-8120 Dr. Toni Martin, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 204-4666 Dr. Yash Rusconi-rodriguesBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 898-4200 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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