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. Sachil Khandelwal, D.O.Ventura, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 652-5672 Dr. Samuel Rauch, MDVentura, CA · No drug or device payments recorded (2025) ·
(805) 644-9121 Dr. Scott Goodfriend, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 477-6464 Dr. Scott Smith, MDVentura, CA · No drug or device payments recorded (2025) ·
(805) 948-5011 Dr. Seema Kazemi Raheel, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 641-5600 Dr. Shani Prieto, RNVentura, CA · No drug or device payments recorded (2025) ·
(805) 652-5011 Dr. Sosi Dzhugarian, DOVentura, CA · No drug or device payments recorded (2025) ·
(805) 948-5672 Dr. Steven Barr, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 658-5800 Dr. Susan Slater, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 804-7589 Dr. Syd Bakshandeh, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 647-6322 Dr. Tatevik Simavorian, DOVentura, CA · No drug or device payments recorded (2025) ·
(805) 948-5672 Dr. Thatcher Huynh, DOVentura, CA · $200 in drug and device payments (2025) ·
(805) 948-5672 Dr. Thuy Trang NguyenVentura, CA · No drug or device payments recorded (2025) ·
(805) 657-6000 Dr. Udesh Shah, DOVentura, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 652-5672 Dr. Wikrom Chaiwatcharayut, M.D.Ventura, CA · $1,978 in drug and device payments (2025) ·
(805) 647-6322 Dr. William Grundler, M.D.Ventura, CA · No drug or device payments recorded (2025) ·
(805) 652-6556 Dr. Abdul Enayat, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 241-6666 Dr. Aditya Devineni, MD, MSVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-4929 Dr. Aelita Kennedy, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 245-4747 Dr. Agnes Quion, M.D.Victorville, CA · $151 in drug and device payments (2025) ·
(760) 951-5938 Dr. Ai-jen Wang, M.D.Victorville, CA · $97 in drug and device payments (2025) · Telehealth ·
(760) 241-8000 Dr. Anupama Sharma, MDVictorville, CA · $40 in drug and device payments (2025) · Telehealth ·
(760) 241-4929 Dr. Arash Milani, MDVictorville, CA · $2,514 in drug and device payments (2025) · Telehealth ·
(760) 713-6969 Dr. Archna Sood, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 955-2828 Dr. Ashvin Bhutwala, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 244-1155 Dr. Charbel Aoun, MDVictorville, CA · $47 in drug and device payments (2025) · Telehealth ·
(760) 241-8000 Dr. Douglas Ziprick, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Fadi Tahhan, DOVictorville, CA · $147 in drug and device payments (2025) ·
(760) 261-5292 Dr. Faraz Momin, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 261-5234 Dr. Fariq Akhtar Aziz, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Gladys Taningco, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Hiren KoshiyaVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Imran Siddiqui, M.D.Victorville, CA · $341 in drug and device payments (2025) ·
(760) 241-8000 Dr. Joel Velasquez, MDVictorville, CA · $2,454 in drug and device payments (2025) ·
(760) 241-7763 Dr. Kenneth Johan, MDVictorville, CA · $571 in drug and device payments (2025) ·
(760) 241-8000 Dr. Khin Naing, M.D.Victorville, CA · $19 in drug and device payments (2025) ·
(909) 825-7084 Dr. Marlon Russell, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 261-5292 Dr. Mehrnaz Salehidobakhshari, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Melvin Webb, M.D.Victorville, CA · $226 in drug and device payments (2025) ·
(760) 245-8691 Dr. Michio Abe, MDVictorville, CA · $151 in drug and device payments (2025) · Telehealth ·
(760) 553-7000 Dr. Mohamed Ismail, MDVictorville, CA · $150 in drug and device payments (2025) · Telehealth ·
(760) 951-2599 Dr. Mohammed Babu, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Nicky Shah, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 261-5234 Dr. Nigar Enayat, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 241-6666 Dr. Om Sood, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 955-2828 Dr. Prakash Yakkundi, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 553-7000 Dr. Rashedul Hasan, MDVictorville, CA · No drug or device payments recorded (2025) ·
(760) 241-8000 Dr. Roger Moushabek, M.D.Victorville, CA · $155 in drug and device payments (2025) ·
(760) 952-1222 Dr. Salvador Villalon, M.D.Victorville, CA · No drug or device payments recorded (2025) ·
(760) 530-5700 Dr. Sean Cody, MDVictorville, CA · $125 in drug and device payments (2025) ·
(760) 241-4929 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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