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 Cheung, MDLos Angeles, CA · $332 in drug and device payments (2025) ·
(310) 206-0449 Dr. David Cohen, M.D.Los Angeles, CA · $150 in drug and device payments (2025) ·
(323) 857-2000 Dr. David De La Loza, MDLos Angeles, CA · $193 in drug and device payments (2025) ·
(323) 263-9700 Dr. David Eisenman, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-6232 Dr. David Guzman, M.D.Los Angeles, CA · $4,632 in drug and device payments (2025) ·
(323) 857-2000 Dr. David Herman, MDLos Angeles, CA · $89 in drug and device payments (2025) ·
(323) 993-7500 Dr. David Ho, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 409-8080 Dr. David Lam, D.O.Los Angeles, CA · $331 in drug and device payments (2025) ·
(323) 987-1362 Dr. David Lawrence, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(213) 256-2677 Dr. David Martins, GENERAL INTERNISTLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 730-1920 Dr. David Melamed, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 473-1734 Dr. David Morris, MDLos Angeles, CA · $41 in drug and device payments (2025) ·
(323) 783-4011 Dr. David Rios, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-3810 Dr. David Seto, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(213) 253-2677 Dr. David Sohn, M.D., M.S.Los Angeles, CA · $35 in drug and device payments (2025) · Telehealth ·
(213) 381-7272 Dr. David Tellalian, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 358-2300 Dr. David Vizel, M.D.Los Angeles, CA · $336 in drug and device payments (2025) · Telehealth ·
(323) 655-0990 Dr. David Yu, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-6301 Dr. David Zingmond, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6232 Dr. Dawn Wood, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 794-9718 Dr. Deborah Juster, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 857-2000 Dr. Deborah Mendenhall, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Deborah Moran, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(301) 478-3711 Dr. Delani GunawardenaLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 825-7375 Dr. Demetria Malloy, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Denise Garvey, MDLos Angeles, CA · $147 in drug and device payments (2025) · Telehealth ·
(301) 208-7777 Dr. Dennis Bleakley, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(562) 867-7999 Dr. Derek ScottLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-6232 Dr. Derek TaiLos Angeles, CA · $782 in drug and device payments (2025) ·
(833) 574-2273 Dr. Desiree Queza, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 783-4011 Dr. Diana Lopez, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-7375 Dr. Diana TranLos Angeles, CA · No drug or device payments recorded (2025) ·
(327) 310-4237 Dr. Diane Ho, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 931-5737 Dr. Diane Reed, M.D.Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-6232 Dr. Dianne Domingo-foraste, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 268-8511 Dr. Diego Garcia, MDLos Angeles, CA · $144 in drug and device payments (2025) ·
(833) 574-2273 Dr. Diem Tran, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-4011 Dr. Dimitra PapaspyridiLos Angeles, CA · No drug or device payments recorded (2025) ·
(424) 443-5555 Dr. Divya Prajapati, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 319-4698 Dr. Dmitry Karayev, M.D.Los Angeles, CA · $517 in drug and device payments (2025) · Telehealth ·
(310) 659-7878 Dr. Doeyoung Kim, MDLos Angeles, CA · $2,132 in drug and device payments (2025) ·
(213) 674-7350 Dr. Dong Mun, MDLos Angeles, CA · $92 in drug and device payments (2025) ·
(323) 766-1057 Dr. Dong Shin, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 783-4011 Dr. Dong To, M.D.Los Angeles, CA · $17 in drug and device payments (2025) ·
(323) 987-1309 Dr. Donna Washington, MD, MPHLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Doran Kim, M.D.Los Angeles, CA · $40 in drug and device payments (2025) ·
(310) 409-9075 Dr. Dorothy Lowe, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 659-7000 Dr. Douglas Bell, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-6232 Dr. Douglas MuradLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-8000 Dr. Douglas Webber, M.D.Los Angeles, CA · $904 in drug and device payments (2025) ·
(323) 666-6000 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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