Katrina D. Castle, MS,RD
Registered Dietitian · Newport Beach, CA
Katrina D. Castle, MS,RD is a registered dietitian with a practice address in Newport Beach, California, and NPI 1336101203, issued on Apr 5, 2006. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Katrina D. Castle
- Credential
- MS,RD
- Primary taxonomy
- Registered Dietitian 133V00000X
- Practice location
- 2416 Naples, Newport Beach, CA 92660
- Phone
- (405) 401-1774
- Enumerated
- Apr 5, 2006
- Record last updated
- Feb 24, 2026
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Verify Katrina D. Castle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Katrina D. Castle among 7,148 registered dietitian records in California
Katrina D. Castle, MS,RD is one of 7,148 registered dietitian records with a practice address in California. 5% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 94% newer
- In a Medicare fileNo · 5% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 registered dietitian records list a practice address in Newport Beach
They are 61 of the 4,414 NPPES records with a practice address in Newport Beach, and 7,148 registered dietitian records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,148 in California → Every provider in Newport Beach → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Shabnam Barati, RDNewport Beach, CA 926601285941856
- Karla Campbell, MS, RD, CSSDNewport Beach, CA 926601518192962
- Taylor Carroll, RDNewport Beach, CA 926601669871695
- Janice Dada, MPH, RD, CDENewport Beach, CA 926601356540439
- Jennifer Defrain, MS, RDNewport Beach, CA 926601407168214
- Kathryn DyerNewport Beach, CA 926601609141225
- Joanna Garcia, RDNewport Beach, CA 926601578876421
- Dahlia Marin, RDNewport Beach, CA 926601639594567
Common questions
What is Katrina D. Castle, MS,RD's NPI number?
Katrina D. Castle, MS,RD's National Provider Identifier (NPI) is 1336101203, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katrina D. Castle, MS,RD located?
The NPPES record lists a practice address at 2416 Naples, Newport Beach, CA, 92660. Phone: (405) 401-1774. Providers update this record themselves, so call before visiting.
How can I verify Katrina D. Castle, MS,RD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.