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. Patricia Allemann, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(415) 353-6355 Dr. Patricia Jean Winner, MDPalo Alto, CA · $69 in drug and device payments (2025) ·
(650) 723-0822 Dr. Patti Yanklowitz, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Paul MarcusPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Pelin Cinar, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 498-6000 Dr. Peter Lee, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Phyllis Thurstone, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-6221 Dr. Prasantha Vemu, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Priyanka DuttaPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Rachel Najafi, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Rebecca Leon, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2977 Dr. Rhonda Hamilton, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Richard Mamelok, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 924-0347 Dr. Robert Kocher, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 475-3710 Dr. Robert Weber, MD, PHDPalo Alto, CA · $387 in drug and device payments (2025) · Telehealth ·
(650) 321-4121 Dr. Rohini Arramreddy, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 318-9928 Dr. Ryan Satovsky, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Sally Rubenstone, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 857-0226 Dr. Salwan Abiezzi, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 614-3299 Dr. Samina Iqbal, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Sara AbrahamsPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2977 Dr. Sarah Robinson, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Saumya Sutaria, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 494-6262 Dr. Sayanta Akkad, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 529-4522 Dr. Scott Matthews, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Se Young Ju, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2977 Dr. Sheila Nouchian, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 384-0986 Dr. Shona Philip, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-0837 Dr. Shweta Khankari, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2917 Dr. Silvia Tee, M.D.Palo Alto, CA · $147 in drug and device payments (2025) · Telehealth ·
(650) 725-5222 Dr. Sneha Lakshman, MDPalo Alto, CA · $276 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Sonia Bajwa-dulaiPalo Alto, CA · No drug or device payments recorded (2025) ·
(888) 731-8994 Dr. Stephanie Higgins, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 799-4659 Dr. Stephen Ezeji-okoye, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Stuart Schlisserman, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 325-6778 Dr. Sue Kim, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 614-3253 Dr. Sunitha Gill, M.DPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Surbhi Bhargava, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2977 Dr. Susan Anderson, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2958 Dr. Susan Elgee, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2977 Dr. Susan Frayne, MD, MPHPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Susan Hoffman, M.D.Palo Alto, CA · $1,592 in drug and device payments (2025) ·
(650) 329-0440 Dr. Susan Price, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 493-5000 Dr. Suvarna Akki, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Suzanne Woo, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 329-0440 Dr. Swathi Nallapa, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 853-2977 Dr. Taraneh Razavi, MDPalo Alto, CA · $121 in drug and device payments (2025) ·
(650) 325-6778 Dr. Teck Ling, MDPalo Alto, CA · $235,220 in drug and device payments (2025) ·
(650) 324-2688 Dr. Teresa Nauenberg, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 614-3299 Dr. Timothy Lee, MDPalo Alto, CA · $87 in drug and device payments (2025) ·
(650) 853-2977 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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