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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. David Liao, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Derrick Hong, M.D
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Edmund Ray Pana, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (855) 206-6764
Dr. Ewa Kontny, M.D.
Irvine, CA · $179 in drug and device payments (2025) · (888) 655-8463
Dr. Ghazal Bahri, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 671-8000
Dr. Helya Peyman, DO
Irvine, CA · $543 in drug and device payments (2025) · (800) 826-4673
Dr. Hiba Elzubeir
Irvine, CA · No drug or device payments recorded (2025) · (855) 206-6764
Dr. Hien Nguyen, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. John Chien, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. John Dieckhoff, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Khanh Nguyen, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 923-3200
Dr. May Kam, D.O.
Irvine, CA · No drug or device payments recorded (2025) · (888) 655-9463
Dr. Meenu Kwatra, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 932-5000
Dr. Michael Caberto, D.O.
Irvine, CA · No drug or device payments recorded (2025) · (800) 826-4673
Dr. Michael Cho, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 873-6181
Dr. Mohammad Sadi
Irvine, CA · No drug or device payments recorded (2025) · (800) 826-4673
Dr. Nam Kim, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Nima Taheri, MD
Irvine, CA · $261 in drug and device payments (2025) · (949) 236-7127
Dr. Ori Barashy
Irvine, CA · No drug or device payments recorded (2025) · (877) 742-4624
Dr. Preston Kim
Irvine, CA · No drug or device payments recorded (2025) · (877) 742-4624
Dr. Rasha Hindiyeh, M.D., M.B.A.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Reza Bashtar
Irvine, CA · $190 in drug and device payments (2025) · (858) 208-6550
Dr. Robert Cho, M.D.
Irvine, CA · $139 in drug and device payments (2025) · (949) 610-7245
Dr. Roshny Pattathu, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 235-7243
Dr. Salman Ziaei, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 873-6181
Dr. Scott Derkum, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Seon Song
Irvine, CA · No drug or device payments recorded (2025) · (949) 923-3200
Dr. Shreyas Patel, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 671-8000
Dr. Siamak Nabili, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (855) 206-6764
Dr. Sophia Tran, DO
Irvine, CA · $125 in drug and device payments (2025) · (552) 066-7648
Dr. Susan Marron, MD
Irvine, CA · No drug or device payments recorded (2025) · (949) 923-3200
Dr. Tydus Thai
Irvine, CA · No drug or device payments recorded (2025) · (949) 671-8000
Dr. Veejay Geria, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 610-7245
Dr. Whitney Nelson, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 873-6181
Dr. Yi Tang, M.D.
Irvine, CA · $50 in drug and device payments (2025) · (949) 610-7245
Dr. Amir Akhzari, M.D.
Jackson, CA · No drug or device payments recorded (2025) · (916) 335-2284
Dr. Maria Carla Krissel Badiola, MD
Jackson, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Steven Lalliss, MD.
Jackson, CA · $42 in drug and device payments (2025) · (209) 257-7615
Dr. Jonathan Frankman, DO
Kentfield, CA · No drug or device payments recorded (2025) · (415) 301-1733
Dr. Jay Cooper, M.D.
King City, CA · No drug or device payments recorded (2025) · (831) 385-1280
Dr. Jason Dietz, MBBCHBAO
La Canada, CA · No drug or device payments recorded (2025) · (818) 306-6240
Dr. Richard Compton, DO, MPH
La Canada, CA · $610 in drug and device payments (2025) · Telehealth · (435) 851-4140
Dr. Alfort Santos, M.D.,R.N
Lafayette, CA · $106 in drug and device payments (2025) · (916) 854-6975
Dr. Alexander Ko, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · (619) 403-6041
Dr. Ashley Shah, D.O.
La Jolla, CA · No drug or device payments recorded (2025) · (858) 554-7909
Dr. Austin Ficara, DO
La Jolla, CA · No drug or device payments recorded (2025) · (858) 554-7909
Dr. Caitlin Whelan, MD
La Jolla, CA · No drug or device payments recorded (2025) · (858) 554-3200
Dr. Cameron Zenger, MD
La Jolla, CA · $1,256 in drug and device payments (2025) · (858) 554-7909
Dr. Catherine Weir, DO
La Jolla, CA · $2,511 in drug and device payments (2025) · (858) 554-8788
Dr. Charlotte Ellberg
La Jolla, CA · No drug or device payments recorded (2025) · (800) 926-8273

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.