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. Farschad Birdjandi, M.D.Chula Vista, CA · $65 in drug and device payments (2025) ·
(858) 499-2707 Dr. Francisco Martinez, MDChula Vista, CA · $28 in drug and device payments (2025) · Telehealth ·
(619) 421-2949 Dr. Gina Woods, MDChula Vista, CA · $22,999 in drug and device payments (2025) · Telehealth ·
(619) 409-1600 Dr. Gregory Czer, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 421-4000 Dr. Hector Heredia-martinez, M.D.Chula Vista, CA · $321 in drug and device payments (2025) ·
(619) 420-1010 Dr. Iris Ha, M.D.Chula Vista, CA · $268 in drug and device payments (2025) · Telehealth ·
(669) 233-5266 Dr. Jaime Stull, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 271-7100 Dr. Jeannette Delvalle Velez, M.D.Chula Vista, CA · $66 in drug and device payments (2025) ·
(619) 421-3313 Dr. Jiun Kim, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 205-4585 Dr. Johnna Gemelos, D.O.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 691-7000 Dr. Josefina Trausch, MDChula Vista, CA · $162 in drug and device payments (2025) · Telehealth ·
(619) 502-7300 Dr. Jose Lopez, M.D.Chula Vista, CA · $100 in drug and device payments (2025) ·
(619) 498-3755 Dr. Jose Pelayo, M.D.Chula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2600 Dr. Jose Pena, MDChula Vista, CA · $459 in drug and device payments (2025) · Telehealth ·
(619) 691-1766 Dr. June Dela Cruz, M.D.Chula Vista, CA · $60 in drug and device payments (2025) ·
(619) 482-4619 Dr. Justin Choudhari, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 502-7854 Dr. Leticia Uwedjojevwe, MDChula Vista, CA · $1,743 in drug and device payments (2025) · Telehealth ·
(619) 934-2215 Dr. Liza Marroquin, MD MBAChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 421-3313 Dr. Lueng Tcheung, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 400-5050 Dr. Maria Fuentes, M.D.Chula Vista, CA · $1,590 in drug and device payments (2025) ·
(619) 941-1545 Dr. Mark Lazarus, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 691-7000 Dr. Maryam Hanoodi, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(858) 499-2600 Dr. Mehrafarid Tiraie, MDChula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(588) 499-2713 Dr. Michael Chambers, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(858) 499-2600 Dr. Michael Sonbaty, M.D.Chula Vista, CA · $197 in drug and device payments (2025) ·
(858) 499-2616 Dr. Michael Villarroel, D.O.Chula Vista, CA · No drug or device payments recorded (2025) ·
(858) 499-2777 Dr. Min ZhaoChula Vista, CA · $104 in drug and device payments (2025) · Telehealth ·
(858) 585-4319 Dr. Moe Zaw, M.D.Chula Vista, CA · $34 in drug and device payments (2025) · Telehealth ·
(858) 939-6570 Dr. Nisha KuruvadiChula Vista, CA · $777 in drug and device payments (2025) · Telehealth ·
(619) 421-3313 Dr. Omar Khayyat, MDChula Vista, CA · $623 in drug and device payments (2025) · Telehealth ·
(619) 691-7000 Dr. Perry Montoya, M.DChula Vista, CA · $150 in drug and device payments (2025) · Telehealth ·
(858) 499-2600 Dr. Reman Sami, DOChula Vista, CA · $144 in drug and device payments (2025) ·
(619) 862-6673 Dr. Renato De La Rosa, MDChula Vista, CA · $572 in drug and device payments (2025) · Telehealth ·
(619) 397-5001 Dr. Ricardo Searcy, MDChula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2707 Dr. Robert Cabico, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 425-8212 Dr. Robert Sartor, M.D.Chula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2600 Dr. Rocio Flores, MDChula Vista, CA · $555 in drug and device payments (2025) ·
(619) 476-9054 Dr. Rodolfo BalderasChula Vista, CA · $74 in drug and device payments (2025) ·
(619) 662-4100 Dr. Rohit Majumdar, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 862-6673 Dr. Samuel Abarte, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 532-8225 Dr. Samuel Gidanian, MDChula Vista, CA · $197 in drug and device payments (2025) ·
(619) 502-5800 Dr. Samuel Robinson, M.D.Chula Vista, CA · No drug or device payments recorded (2025) ·
(619) 691-7000 Dr. Sandra Cepin, MDChula Vista, CA · $454 in drug and device payments (2025) ·
(619) 427-0665 Dr. Sanket Patel, M.D.Chula Vista, CA · $66 in drug and device payments (2025) ·
(619) 691-7000 Dr. Sharna Shachar, M.DChula Vista, CA · $66 in drug and device payments (2025) · Telehealth ·
(619) 409-9999 Dr. Sheri Cameron, MDChula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2707 Dr. Suzan Mahdai, M.D.Chula Vista, CA · $144 in drug and device payments (2025) ·
(619) 691-7000 Dr. Taikeun Park, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 515-2500 Dr. Timothy Lee, M.D.Chula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2600 Dr. Timothy Strouse, M.D.Chula Vista, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 499-2600 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
