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Hospitalists in California

Data updated monthly · Last refresh October 2026

3,110 Hospitalist providers practice in California, including 149 (5%) 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.

3,110providers
149telehealth
Los Angelestop city

Hospitalist by city in California

Choose a city to see providers there.

Hospitalist in Los Angeles231 providers
Hospitalist in San Diego173 providers
Hospitalist in San Francisco161 providers
Hospitalist in Sacramento155 providers
Hospitalist in Palo Alto109 providers
Hospitalist in West Hollywood99 providers
Hospitalist in Santa Monica96 providers
Hospitalist in Oakland84 providers
Hospitalist in Orange81 providers
Hospitalist in Fresno80 providers
Hospitalist in Walnut Creek68 providers
Hospitalist in La Jolla67 providers
Hospitalist in Newport Beach65 providers
Hospitalist in Modesto61 providers
Hospitalist in Roseville53 providers
Hospitalist in Rancho Mirage53 providers
Hospitalist in San Jose46 providers
Hospitalist in Irvine41 providers
Hospitalist in Santa Clara41 providers
Hospitalist in Santa Cruz40 providers
Hospitalist in Mountain View36 providers
Hospitalist in Berkeley33 providers
Hospitalist in Bakersfield31 providers
Hospitalist in Pasadena31 providers

Hospitalist 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. Diego Gonzalez, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 639-9401
Dr. Divya Chode, M.D
Orange, CA · $343 in drug and device payments (2025) · Telehealth · (714) 639-9401
Dr. Earl Mejia, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Edvin Dilanchiyan, MD
Orange, CA · $332 in drug and device payments (2025) · (714) 639-9401
Dr. Eui Cha, M.D.
Orange, CA · $78 in drug and device payments (2025) · (714) 771-8000
Dr. Frederick Chua, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5691
Dr. Harry Fornwalt, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Hoang Anh Nguyen, M.D.
Orange, CA · $101 in drug and device payments (2025) · (714) 880-7812
Dr. Israel De Alba, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Jacqueline O'neill, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. James H Williams Jr, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-2986
Dr. James Roh, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 639-9401
Dr. Jason Caberto, D.O.
Orange, CA · $102 in drug and device payments (2025) · (714) 771-8000
Dr. Jennifer Grinceri
Orange, CA · $111 in drug and device payments (2025) · (714) 456-5691
Dr. John Hann, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Johnson Chiu, MD
Orange, CA · $112 in drug and device payments (2025) · Telehealth · (714) 639-9401
Dr. Jonathan Gau, MD
Orange, CA · $27 in drug and device payments (2025) · (714) 456-5691
Dr. Jonnel Constantino, M.D.
Orange, CA · No drug or device payments recorded (2025) · (909) 427-5310
Dr. Kang Hsu, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 639-9401
Dr. Karen Fremen, D.O.
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Kenny Vongbunyong
Orange, CA · $281 in drug and device payments (2025) · (714) 456-5691
Dr. Kevin Chow, MD
Orange, CA · $14 in drug and device payments (2025) · (714) 456-5726
Dr. Kevin Huntsman, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 639-9401
Dr. Khanh-van T Le-bucklin, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Kiran Singh
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5631
Dr. Kyle Digrande, MD
Orange, CA · $394 in drug and device payments (2025) · (714) 456-5691
Dr. Lanny Hsieh, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8068
Dr. Lina Bissar, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Lindsey Hendricks, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5691
Dr. Maria Barsky, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Matthew Butteri, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5339
Dr. Matthew King
Orange, CA · $1,102 in drug and device payments (2025) · (714) 880-7812
Dr. Matthew Miller, DO
Orange, CA · $754 in drug and device payments (2025) · (714) 456-8888
Dr. Megan Macdougall
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Miki Watanabe, M.D.
Orange, CA · No drug or device payments recorded (2025) · Telehealth · (714) 880-7812
Dr. Monil Patel, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Neel Chari, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Omar Darwish, D.O.
Orange, CA · $7 in drug and device payments (2025) · (714) 880-7812
Dr. Paul Elias
Orange, CA · $749 in drug and device payments (2025) · (714) 456-5691
Dr. Pei Mulroy, D.O.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Peter Nguyen, MD
Orange, CA · $358 in drug and device payments (2025) · (714) 880-7812
Dr. Pouneh Nasseri, M.D.
Orange, CA · No drug or device payments recorded (2025) · (877) 824-3627
Dr. Quincy Almond, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 639-9401
Dr. Richard Lee
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5691
Dr. Roger Chang, M.D.
Orange, CA · No drug or device payments recorded (2025) · Telehealth · (714) 771-8000
Dr. Roshan Mahoney, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-6693
Dr. Samuel Ji, DO
Orange, CA · $122 in drug and device payments (2025) · (714) 880-7812
Dr. Samuel Lai, MD
Orange, CA · $76 in drug and device payments (2025) · (714) 456-7002
Dr. Sarah Bader, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5691
Dr. Scott Kubomoto, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888

Common questions

How many Hospitalist providers are in California?

There are 3,110 Hospitalist providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Hospitalist providers in California offer telehealth?

Yes. 149 of the 3,110 Hospitalist providers in California (about 5%) report offering telehealth services in CMS data.

Which cities in California have the most Hospitalist providers?

Los Angeles (231), San Diego (173), San Francisco (161) have the highest concentration of Hospitalist providers in California.

How many Hospitalist providers in California received drug or device company payments?

722 of 3,110 Hospitalist providers in California (23%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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 Hospitalists in California work in independent practices or large health systems?

Among 2,469 Hospitalists in California enrolled in Medicare, 5% bill through a solo or small practice with fewer than 10 clinicians, 13% through a mid-size group of 10 to 99, and 82% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Hospitalists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Hospitalists hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Cedars-Sinai Medical Center in Los Angeles; Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica.

Hospitalist in all 50 states Search all 3,110 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Hospitalist in California? Get featured.