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. Mark Hall
Westlake Village, CA · No drug or device payments recorded (2025) · Telehealth · (805) 371-1393
Dr. Olga Popel, MD
Westlake Village, CA · No drug or device payments recorded (2025) · Telehealth · (805) 494-6920
Dr. Branden Ireifej, MD
Whittier, CA · $372 in drug and device payments (2025) · (562) 758-6600
Dr. Edward Harris, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 945-7626
Dr. Gilbert Gelfand, M.D.
Whittier, CA · $1,025 in drug and device payments (2025) · Telehealth · (562) 758-6600
Dr. Jessica Wong, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 967-2788
Dr. Kei-lwun Yee, MD
Whittier, CA · $51 in drug and device payments (2025) · (562) 967-2788
Dr. Mimi Yang, PA-C
Whittier, CA · No drug or device payments recorded (2025) · (562) 758-6600
Dr. Seyedehsara Seyedali, MD
Whittier, CA · $114 in drug and device payments (2025) · Telehealth · (562) 967-2788
Dr. Tandis Mahani, MD
Whittier, CA · $177 in drug and device payments (2025) · (562) 967-2788
Dr. Tien I Su, M.D.
Whittier, CA · $1,397 in drug and device payments (2025) · Telehealth · (562) 758-6600
Dr. Khin Sandar Lim, M.D
Wildomar, CA · $282 in drug and device payments (2025) · (833) 574-2273
Dr. Diana Lau, MD
Woodland, CA · $1,334 in drug and device payments (2025) · Telehealth · (530) 666-1631
Dr. Lei Wang, MD
Woodland, CA · $482 in drug and device payments (2025) · Telehealth · (530) 668-2600
Dr. Minzi Chen, MD
Woodland, CA · $893 in drug and device payments (2025) · Telehealth · (560) 668-2600
Dr. Byung Ban, D.O.
Woodland Hills, CA · $4,458 in drug and device payments (2025) · (833) 574-2273
Dr. David Hurwitz, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Meera Reddy, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Nazanin Firooz, M.D.
Woodland Hills, CA · $10,407 in drug and device payments (2025) · Telehealth · (818) 598-0000
Dr. Phillip Aleksiejuk, MD
Woodland Hills, CA · $4,391 in drug and device payments (2025) · (818) 598-0000
Dr. Steven Weiner, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 703-7595
Dr. Gurkirpal Sehgal, MD
Woodside, CA · $211 in drug and device payments (2025) · (650) 780-0200
Dr. Geeta Chaparala, MD
Yuba City, CA · No drug or device payments recorded (2025) · Telehealth · (530) 749-3341

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.