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. Joshua Chan, DO, MSOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-5691 Dr. Joyce Limurti, D.OOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Julie Leahy, NPOrange, CA · No drug or device payments recorded (2025) ·
(714) 289-3904 Dr. Kasra Morshedizadeh, M.D. Dr. Katayoon Shahrokh, M.D.Orange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-8874 Dr. Katayun Saadai, MDOrange, CA · $1,093 in drug and device payments (2025) · Telehealth ·
(714) 361-6600 Dr. Kate Monahan, DOOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 628-3230 Dr. Kathleen Glaspy, M.D.Orange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 628-3110 Dr. Kevin Mcbride, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 771-8177 Dr. Kevin Truong, MD, MBAOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-8888 Dr. Kumar Gandhi, M.D.Orange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 633-4600 Dr. Kusum Ohri, M.D.Orange, CA · $730 in drug and device payments (2025) · Telehealth ·
(714) 639-0414 Dr. Lauren Chen, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Lloyd Rucker, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-2986 Dr. Lulu Yang, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 639-2600 Dr. Macrina Rosas RosasOrange, CA · No drug or device payments recorded (2025) ·
(714) 500-0356 Dr. Mahesh Shah, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 288-1012 Dr. Malavika Mehta, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Malik Salman, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-5691 Dr. Mansi Kothari, M.D.Orange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-6745 Dr. Marian Assal, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 925-4233 Dr. Maria Victoria Peralta, M.D. Dr. Marie Balfour, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-5691 Dr. Mark Rodrigues, M.D.Orange, CA · $2,193 in drug and device payments (2025) · Telehealth ·
(714) 245-9900 Dr. Marrey Ruby Quizon, MDOrange, CA · $1,794 in drug and device payments (2025) · Telehealth ·
(714) 456-5413 Dr. Martha Sosa-johnson, MDOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-8978 Dr. Maryam Rahimi, MDOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-7016 Dr. Mavis Peng, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Maximo Diamond, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 221-5182 Dr. Meghan Dekitani, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Melody Esmaeili Ghahfarokhi, MD, PHD Dr. Michael Del JuncoOrange, CA · $313 in drug and device payments (2025) · Telehealth ·
(714) 919-8141 Dr. Michael Mullaney, M.D. Dr. Michael Tedaldi, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 456-6693 Dr. Millie AroraOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-5691 Dr. Mitchell Edwards, D.O.Orange, CA · No drug or device payments recorded (2025) ·
(714) 456-7890 Dr. Mohamad Albouidani, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 539-3100 Dr. Mohammad Ahmed-khan, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Nadia Elihu, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 361-6600 Dr. Omar Nagy, DOOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 Dr. Parinaz Abiri, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8888 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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