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Registered Dietitians in California

Data updated monthly · Last refresh October 2026

7,184 Registered Dietitian providers practice in California, including 183 (3%) 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.

7,184providers
183telehealth
San Diegotop city

Registered Dietitian by city in California

Choose a city to see providers there.

Registered Dietitian in San Diego505 providers
Registered Dietitian in Los Angeles487 providers
Registered Dietitian in San Francisco429 providers
Registered Dietitian in Sacramento231 providers
Registered Dietitian in San Jose151 providers
Registered Dietitian in Oakland130 providers
Registered Dietitian in Palo Alto119 providers
Registered Dietitian in Fresno107 providers
Registered Dietitian in Long Beach100 providers
Registered Dietitian in Riverside92 providers
Registered Dietitian in Irvine80 providers
Registered Dietitian in Santa Monica70 providers
Registered Dietitian in Santa Rosa63 providers
Registered Dietitian in Bakersfield62 providers
Registered Dietitian in Newport Beach61 providers
Registered Dietitian in Torrance61 providers
Registered Dietitian in Fremont53 providers
Registered Dietitian in Loma Linda51 providers
Registered Dietitian in Roseville50 providers
Registered Dietitian in Stockton49 providers
Registered Dietitian in Walnut Creek48 providers
Registered Dietitian in Santa Clara47 providers
Registered Dietitian in La Jolla46 providers
Registered Dietitian in Santa Barbara46 providers

Registered Dietitian 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. Maiyu Fernandez, RDN
Oakland, CA · No drug or device payments recorded (2025) · (202) 725-8742
Dr. Maria Fernanda Espinosa Nunes, RD
Oakland, CA · No drug or device payments recorded (2025) · (832) 600-7430
Dr. Marianna Tong
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Marian Roan, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 428-3885
Dr. Marisa Castaldini, MS RD CDE
Oakland, CA · No drug or device payments recorded (2025) · (408) 768-3763
Dr. Mari Somerville, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 893-2060
Dr. Mary Henderson, PHD, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 428-3885
Dr. Melissa Ayres, MPH, RDN
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-3700
Dr. Melissa Cannon
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-4463
Dr. Meriah Gille, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-4464
Dr. Michele Vivas, M.S., R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 595-9474
Dr. Michelle Keh, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 655-4000
Dr. Michelle Roy, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 922-8208
Dr. Mimi Huang
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Missy Delmar, RD, CDE
Oakland, CA · No drug or device payments recorded (2025) · (510) 444-0790
Dr. Munirih Quinlan, RD
Oakland, CA · No drug or device payments recorded (2025) · (217) 778-8274
Dr. Nancy Wei, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 597-1930
Dr. Nang Kit Wong, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 238-5400
Dr. Natalia Solano-rojas, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 272-1508
Dr. Natalie Bates
Oakland, CA · No drug or device payments recorded (2025) · (858) 663-0404
Dr. Natasha Wright, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Ninoska Ayala, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 434-5319
Dr. Patricia Trujillo, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 272-5108
Dr. Peter Madril, RDN
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-1508
Dr. Rachel Franz, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-6853
Dr. Rachel Hawkins, RDN
Oakland, CA · No drug or device payments recorded (2025) · (530) 574-9280
Dr. Rachel Parker, RD
Oakland, CA · No drug or device payments recorded (2025) · (925) 779-3675
Dr. Raquel Trenado, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (408) 256-2063
Dr. Rebecca Thieneman, RDN
Oakland, CA · No drug or device payments recorded (2025) · (678) 896-2394
Dr. Renata Cauchon-robles, RD
Oakland, CA · No drug or device payments recorded (2025) · (501) 535-4400
Dr. Rex Cordova
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-4400
Dr. Rhondda Guan, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 428-3209
Dr. Richard Bennett, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-7320
Dr. Riley Cook, RDN
Oakland, CA · No drug or device payments recorded (2025) · (818) 585-9076
Dr. Rochelle Guinasso, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-6494
Dr. Rocio Montes, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 835-9610
Dr. Ruth Knittel, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 267-7921
Dr. Ryan Farquhar, RDN
Oakland, CA · No drug or device payments recorded (2025) · (510) 622-0221
Dr. Sally Sarria, RDN, CEDRD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Sandra Chavez, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-7265
Dr. Sandy Liang, RD
Oakland, CA · No drug or device payments recorded (2025) · (707) 992-5335
Dr. Shauna Pirotin, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 535-4463
Dr. Sheila Viswanathan, R.D.
Oakland, CA · No drug or device payments recorded (2025) · (201) 414-2850
Dr. Silvia Dos Santos Kellum
Oakland, CA · No drug or device payments recorded (2025) · (510) 437-4398
Dr. Son Bi, RD
Oakland, CA · No drug or device payments recorded (2025) · (408) 460-0887
Dr. Susan Leung, RD
Oakland, CA · No drug or device payments recorded (2025) · Telehealth · (510) 869-6740
Dr. Suzanne Kordesh, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1386
Dr. Sydney Vargas, RD
Oakland, CA · No drug or device payments recorded (2025) · (925) 519-7612
Dr. Tara Marino, RD
Oakland, CA · No drug or device payments recorded (2025) · (510) 922-8208
Dr. Tiffany Xu, RDN
Oakland, CA · No drug or device payments recorded (2025) · (630) 605-9408

Common questions

How many Registered Dietitian providers are in California?

There are 7,184 Registered Dietitian providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Registered Dietitian providers in California offer telehealth?

Yes. 183 of the 7,184 Registered Dietitian providers in California (about 3%) report offering telehealth services in CMS data.

Which cities in California have the most Registered Dietitian providers?

San Diego (505), Los Angeles (487), San Francisco (429) have the highest concentration of Registered Dietitian providers in California.

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

1 of 7,184 Registered Dietitian providers in California (0%) 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.

Which hospitals do Registered Dietitians in California work at?

According to CMS facility affiliation records, the California hospitals where the most Registered Dietitians hold privileges are UC San Diego Health Hillcrest - Hillcrest Med Ctr in San Diego; Ronald Reagan UCLA Medical Center in Los Angeles.

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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 Registered Dietitian in California? Get featured.