HealthcareDiscovery.AI / Doctors / California / Rheumatology

Rheumatologists in California

Data updated monthly · Last refresh October 2026

923 Rheumatology providers practice in California, including 464 (50%) 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.

923providers
464telehealth
Los Angelestop city

Rheumatology by city in California

Choose a city to see providers there.

Rheumatology in Los Angeles94 providers
Rheumatology in San Francisco63 providers
Rheumatology in San Diego42 providers
Rheumatology in Sacramento27 providers
Rheumatology in Stanford25 providers
Rheumatology in Orange20 providers
Rheumatology in Torrance19 providers
Rheumatology in Beverly Hills19 providers
Rheumatology in Santa Monica18 providers
Rheumatology in La Jolla16 providers
Rheumatology in Palo Alto14 providers
Rheumatology in Santa Barbara14 providers
Rheumatology in San Jose12 providers
Rheumatology in Fresno12 providers
Rheumatology in Loma Linda12 providers
Rheumatology in Walnut Creek12 providers
Rheumatology in Riverside11 providers
Rheumatology in Roseville10 providers
Rheumatology in Oakland9 providers
Rheumatology in Whittier9 providers
Rheumatology in Anaheim9 providers
Rheumatology in Mountain View8 providers
Rheumatology in Fremont8 providers
Rheumatology in Burbank8 providers

Rheumatology 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. Anne Quismorio, MD
Covina, CA · $3,375 in drug and device payments (2025) · Telehealth · (626) 966-1909
Dr. Ariel Bryant, PA
Covina, CA · $2,812 in drug and device payments (2025) · (626) 966-1909
Dr. Christina Chen, DO
Covina, CA · $8,981 in drug and device payments (2025) · (626) 966-1909
Dr. Roshan Patel, M.D.
Covina, CA · $4,546 in drug and device payments (2025) · (626) 966-1909
Dr. Samy Metyas, MD
Covina, CA · $230,023 in drug and device payments (2025) · (626) 966-1909
Dr. Yanisa Chuenkasamekul, PA-C
Covina, CA · $2,486 in drug and device payments (2025) · (626) 966-1909
Dr. Solomon Forouzesh, M.D.
Culver City, CA · $5,251 in drug and device payments (2025) · Telehealth · (310) 204-5555
Dr. Zi Ying Li, M.D
Daly City, CA · $3,095 in drug and device payments (2025) · Telehealth · (415) 841-3833
Dr. Stanley Naides, MD
Dana Point, CA · No drug or device payments recorded (2025) · (949) 282-9712
Dr. Dick Robbins, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 752-3903
Dr. Gurtej Cheema, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 752-2884
Dr. Happy Chan
Davis, CA · No drug or device payments recorded (2025) · (530) 752-2884
Dr. James Castles, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 752-2884
Dr. Merrill Gershwin
Davis, CA · $15,021 in drug and device payments (2025) · (530) 752-2884
Dr. Stanley Naguwa, M.D.
Davis, CA · No drug or device payments recorded (2025) · (530) 747-3074
Dr. Ami Ben-artzi, M.D.
Del Mar, CA · $3,443 in drug and device payments (2025) · Telehealth · (858) 935-8565
Dr. Casey Romo, FNP-C
Downey, CA · No drug or device payments recorded (2025) · (562) 459-4000
Dr. Julia Buchfuhrer, D.O.
Downey, CA · $197,871 in drug and device payments (2025) · Telehealth · (562) 459-4000
Dr. Juliana Chang
Downey, CA · No drug or device payments recorded (2025) · Telehealth · (833) 574-2273
Dr. Lauren Mathias, M.D.
Downey, CA · $1,211 in drug and device payments (2025) · Telehealth · (562) 904-4466
Dr. Mark Borigini, M.D.
Downey, CA · No drug or device payments recorded (2025) · (562) 221-1681
Dr. Katherine Wu
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (925) 875-6100
Dr. Lukas Lasyone, M.D., MPH&TM
Dublin, CA · No drug or device payments recorded (2025) · Telehealth · (510) 498-2372
Dr. Swapna Busa, M.D
El Cajon, CA · $102 in drug and device payments (2025) · (619) 334-4869
Dr. Suraj Timilsina, MD
Elk Grove, CA · $595 in drug and device payments (2025) · Telehealth · (916) 683-3955
Dr. Tissa Bijoy George, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 683-3955
Dr. Kathleen Judd, M.D.
Encinitas, CA · No drug or device payments recorded (2025) · (760) 436-1155
Dr. Natalie Maclean, MD, MSC, FRCPC
Encinitas, CA · $1,365 in drug and device payments (2025) · Telehealth · (760) 753-7374
Dr. Peter Lloyd, M.D.
Encinitas, CA · $668 in drug and device payments (2025) · Telehealth · (760) 452-2080
Dr. Phildrich Teh, M.D., M.S.
Encinitas, CA · $2,774 in drug and device payments (2025) · Telehealth · (760) 633-7255
Dr. Roy Kaplan, M.D.
Encinitas, CA · $268 in drug and device payments (2025) · (760) 753-7374
Dr. Vikram Garg, MD
Encinitas, CA · $3,048 in drug and device payments (2025) · (760) 633-7255
Dr. Lisa Zhu
Encino, CA · No drug or device payments recorded (2025) · Telehealth · (818) 461-8148
Dr. Hailey Baker, MD
Escondido, CA · $3,021 in drug and device payments (2025) · Telehealth · (858) 613-4000
Dr. Tania Rivera, M.D.
Escondido, CA · $7,358 in drug and device payments (2025) · Telehealth · (858) 336-2810
Dr. Nancy Van Speybroeck, MD
Eureka, CA · No drug or device payments recorded (2025) · (707) 443-9371
Dr. George Stock, M.D.
Fairfield, CA · No drug or device payments recorded (2025) · (707) 427-4900
Dr. E Thelen, MD
Fair Oaks, CA · No drug or device payments recorded (2025) · (916) 966-5171
Dr. Dennis Liu, MD
Folsom, CA · $154 in drug and device payments (2025) · Telehealth · (916) 351-4800
Dr. Harbrinder Sandhu, M.D.
Folsom, CA · $1,369 in drug and device payments (2025) · Telehealth · (916) 292-9006
Dr. Shirin Ahmad, MD
Folsom, CA · $19 in drug and device payments (2025) · Telehealth · (916) 983-2307
Dr. Andre Lallande, D.O.
Fontana, CA · No drug or device payments recorded (2025) · (909) 559-1050
Dr. Antony Lin, MD
Fontana, CA · No drug or device payments recorded (2025) · Telehealth · (909) 427-3910
Dr. Lilit Pilossyan, MD
Fontana, CA · $1,152 in drug and device payments (2025) · Telehealth · (909) 427-2608
Dr. Michael Takehara, MD
Fontana, CA · No drug or device payments recorded (2025) · (909) 427-3910
Dr. Miten Vasa, M.D.
Fontana, CA · No drug or device payments recorded (2025) · (909) 427-7132
Dr. Steve Lee, DO
Fontana, CA · $1,387 in drug and device payments (2025) · (909) 427-1000
Dr. Wayne Yee, MD
Fontana, CA · No drug or device payments recorded (2025) · (909) 427-3910
Dr. Ana Maheshwari, MD
Fountain Valley, CA · $1,294 in drug and device payments (2025) · (714) 782-6969
Dr. Gharoon Panahi, MD
Fountain Valley, CA · $2,044 in drug and device payments (2025) · Telehealth · (714) 825-0891

Conditions Rheumatology providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Rheumatology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Rheumatology providers are in California?

There are 923 Rheumatology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Rheumatology providers in California offer telehealth?

Yes. 464 of the 923 Rheumatology providers in California (about 50%) report offering telehealth services in CMS data.

Which cities in California have the most Rheumatology providers?

Los Angeles (94), San Francisco (63), San Diego (42) have the highest concentration of Rheumatology providers in California.

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

520 of 923 Rheumatology providers in California (56%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Rheumatology providers in California treat?

Rheumatology providers commonly treat rheumatoid arthritis, lupus, gout, psoriatic arthritis, fibromyalgia 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 Rheumatologists in California work in independent practices or large health systems?

Among 633 Rheumatologists in California enrolled in Medicare, 27% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 65% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Rheumatologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Rheumatologists hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Stanford Health Care in Stanford; Cedars-Sinai Medical Center in Los Angeles.

Rheumatology in all 50 states Search all 923 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 Rheumatology in California? Get featured.