Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gary J Sardina, RDN

Individual provider Registered Dietitian · NPI 1558171363

Gary J Sardina, RDN is a Registered Dietitian OR Nutrition Professional in Castaic, California. Qualified in 2015, 11 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
11
Licensed in
CA
In the registry since
2025
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

See every abbreviation used in this directory →

Practice location Address checks out

27759 Wakefield Rd
Castaic, CA 91384-3520
Phone: (858) 344-0515
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 86069626 (CA)

Record details

NPI number1558171363
Entity typeIndividual (Type 1)
GenderMale
Credentials RDN
Sole proprietorYes
NPI enumeratedJanuary 13, 2025
Last updated in NPPESJanuary 13, 2025
Certification dateJanuary 13, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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