HealthcareDiscovery.AI / Doctors / California / Allergy & Immunology

Allergists in California

Data updated monthly · Last refresh October 2026

447 Allergy & Immunology providers practice in California, including 144 (32%) offering telehealth. The largest concentration is in San Diego. 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.

447providers
144telehealth
San Diegotop city

Allergy & Immunology by city in California

Choose a city to see providers there.

Allergy & Immunology in San Diego48 providers
Allergy & Immunology in Los Angeles36 providers
Allergy & Immunology in San Francisco15 providers
Allergy & Immunology in Walnut Creek14 providers
Allergy & Immunology in Santa Monica13 providers
Allergy & Immunology in San Jose13 providers
Allergy & Immunology in Palo Alto13 providers
Allergy & Immunology in Sacramento11 providers
Allergy & Immunology in Orange10 providers
Allergy & Immunology in Torrance9 providers
Allergy & Immunology in Stanford9 providers
Allergy & Immunology in Irvine8 providers
Allergy & Immunology in Roseville8 providers
Allergy & Immunology in Long Beach8 providers
Allergy & Immunology in Fresno7 providers
Allergy & Immunology in La Jolla7 providers
Allergy & Immunology in Santa Barbara7 providers
Allergy & Immunology in Menlo Park6 providers
Allergy & Immunology in Santa Rosa6 providers
Allergy & Immunology in Rancho Mirage5 providers
Allergy & Immunology in San Luis Obispo5 providers
Allergy & Immunology in Newport Beach5 providers
Allergy & Immunology in Mountain View5 providers
Allergy & Immunology in Riverside5 providers

Allergy & Immunology 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. Renu Gandhe, MD
Sunnyvale, CA · $1,548 in drug and device payments (2025) · Telehealth · (408) 800-1771
Dr. Yvonne Ho, MD
Sunnyvale, CA · $662 in drug and device payments (2025) · (408) 851-1000
Dr. Lyne Scott, M.D.
Tarzana, CA · $86 in drug and device payments (2025) · Telehealth · (424) 315-1871
Dr. Varaz Bozoghlanian, MD
Tarzana, CA · $603 in drug and device payments (2025) · Telehealth · (818) 345-3929
Dr. Allan Singer, M.D.
Torrance, CA · $370 in drug and device payments (2025) · (310) 326-3371
Dr. Connie Lin, M.D.
Torrance, CA · $424 in drug and device payments (2025) · Telehealth · (310) 378-8900
Dr. Dean Chiang, M.D.
Torrance, CA · $3,933 in drug and device payments (2025) · Telehealth · (310) 326-3371
Dr. Edward Buchsbaum, MD
Torrance, CA · $579 in drug and device payments (2025) · Telehealth · (310) 371-1388
Dr. Ellyn Ashida, MD
Torrance, CA · $790 in drug and device payments (2025) · (310) 944-9098
Dr. Eric Yen
Torrance, CA · $14 in drug and device payments (2025) · Telehealth · (310) 378-8900
Dr. Heather Volpp, M.D.
Torrance, CA · $130 in drug and device payments (2025) · (310) 371-1388
Dr. Stephen Grifka, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 775-7795
Dr. Yana Kryvokhyzha, DO
Torrance, CA · No drug or device payments recorded (2025) · (310) 378-8900
Dr. Joshua Sacha, D.O.
Travis Afb, CA · $8,205 in drug and device payments (2025) · (707) 423-5107
Dr. Arthur Turk, MD
Tustin, CA · No drug or device payments recorded (2025) · (714) 838-2617
Dr. Otto Liao, M.D.
Tustin, CA · $2,798 in drug and device payments (2025) · (714) 838-2617
Dr. Heena Shah-patel, M.D.
Upland, CA · $70,030 in drug and device payments (2025) · (909) 931-4034
Dr. Guillermo Mendoza, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 453-5000
Dr. Nicole Canon, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-2020
Dr. E. N. Brigino-buenaventura, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Robert Freinkel, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 552-1262
Dr. Prashant Verma, M.D.
Ventura, CA · $12,179 in drug and device payments (2025) · (805) 658-9500
Dr. Thuong Nguyen, M.D.
Visalia, CA · $2,142 in drug and device payments (2025) · (559) 738-7593
Dr. Dayna Miyashiro, MD
Vista, CA · $2,028 in drug and device payments (2025) · (760) 941-4444
Dr. Robert Ziering, M.D.
Vista, CA · $8,239 in drug and device payments (2025) · (760) 941-4444
Dr. Sameer Gupta, M.D.
Vista, CA · $2,650 in drug and device payments (2025) · Telehealth · (858) 735-9879
Dr. Allyson Tevrizian, MD
Walnut Creek, CA · $16,312 in drug and device payments (2025) · Telehealth · (925) 935-6252
Dr. Barbara Karpel, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 930-6252
Dr. Cynthia Ashbrook
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 952-2888
Dr. David Cook, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 935-6252
Dr. David Fan, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 906-2015
Dr. Eric Chen, MD
Walnut Creek, CA · $147 in drug and device payments (2025) · (925) 906-2000
Dr. Fannie Su, MD
Walnut Creek, CA · $3,460 in drug and device payments (2025) · Telehealth · (925) 935-6252
Dr. Ilisten Jones, M.D., M.P.H.
Walnut Creek, CA · $61 in drug and device payments (2025) · (925) 935-6252
Dr. Karna Gendo, M.D.
Walnut Creek, CA · $20 in drug and device payments (2025) · (925) 935-6252
Dr. Linda Schultz, MD
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 906-2000
Dr. Matthew Lodewick, MD
Walnut Creek, CA · $19 in drug and device payments (2025) · Telehealth · (925) 930-6252
Dr. Nancy Mozelsio, MD
Walnut Creek, CA · $426 in drug and device payments (2025) · (925) 935-6252
Dr. Nathan Schultz, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 935-6252
Dr. Toral Kamdar, M.D.
Walnut Creek, CA · $1,545 in drug and device payments (2025) · Telehealth · (925) 935-0856
Dr. Daniel Steigelman, MD
West Covina, CA · No drug or device payments recorded (2025) · (626) 792-4171
Dr. Michael Roberts, M.D.
West Hills, CA · $209 in drug and device payments (2025) · Telehealth · (818) 887-1556
Dr. Angelina Crans Yoon, MD
Woodland, CA · $107 in drug and device payments (2025) · Telehealth · (530) 662-3961
Dr. Rajan Merchant, M.D.
Woodland, CA · $1,669 in drug and device payments (2025) · (530) 666-1631
Dr. Alfred Moon, M.D.
Yorba Linda, CA · $2,225 in drug and device payments (2025) · Telehealth · (714) 528-4211
Dr. Donald Gjesdal, M.D.
Yorba Linda, CA · No drug or device payments recorded (2025) · (714) 961-0110
Dr. Hae Young Song, MD
Yorba Linda, CA · $1,360 in drug and device payments (2025) · (714) 777-8845

Conditions Allergy & Immunology providers in California commonly treat

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

Common questions

How many Allergy & Immunology providers are in California?

There are 447 Allergy & Immunology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Allergy & Immunology providers in California offer telehealth?

Yes. 144 of the 447 Allergy & Immunology providers in California (about 32%) report offering telehealth services in CMS data.

Which cities in California have the most Allergy & Immunology providers?

San Diego (48), Los Angeles (36), San Francisco (15) have the highest concentration of Allergy & Immunology providers in California.

How many Allergy & Immunology providers in California received drug or device company payments?

265 of 447 Allergy & Immunology providers in California (59%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Allergy & Immunology providers in California treat?

Allergy & Immunology providers commonly treat seasonal allergies, food allergies, asthma, eczema, chronic hives 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 Allergists in California work in independent practices or large health systems?

Among 276 Allergists in California enrolled in Medicare, 29% bill through a solo or small practice with fewer than 10 clinicians, 17% through a mid-size group of 10 to 99, and 54% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Allergists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Allergists hold privileges are Stanford Health Care in Stanford; Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica; Hoag Memorial Hospital Presbyterian in Newport Beach.

Allergy & Immunology in all 50 states Search all 447 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 Allergy & Immunology in California? Get featured.