Linda Illingworth, RD, CSSD
Metabolic Nutrition Registered Dietitian · San Diego, CA
Linda Illingworth, RD, CSSD is a metabolic nutrition registered dietitian with a practice address in San Diego, California, and NPI 1457787665, issued on Sep 19, 2013. 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
- Linda Illingworth
- Credential
- RD, CSSD
- Primary taxonomy
- Metabolic Nutrition Registered Dietitian 133VN1006X
- Practice location
- 7138 Sherbourne LN, San Diego, CA 92129
- Phone
- (858) 703-7090
- Enumerated
- Sep 19, 2013
- Record last updated
- Sep 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20251112000307); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest metabolic nutrition registered dietitian records → All 85 in California → Look up another NPI →
Verify Linda Illingworth 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
Linda Illingworth among 85 metabolic nutrition registered dietitian records in California
Linda Illingworth, RD, CSSD is one of 85 metabolic nutrition 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 2013, is newer than 58% of them.
- NPI issued2013 · 58% of these records are older, 34% newer
- In a Medicare fileNo · 5% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Record last updated2013 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133VN1006X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Metabolic Nutrition Registered Dietitian providers in California
There are 85 metabolic nutrition registered dietitian records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 85 in California → Every provider in San Diego → Metabolic Nutrition Registered Dietitian nationwide →
The 8 metabolic nutrition registered dietitian records with the nearest ZIP codes
- Marnie Fischer, R.D.San Diego, CA 921211952497265
- Katherine Machado, M.S., R.D.San Diego, CA 921171043535842
- Linda Raynes Mahony, MS.RD. CDE.San Diego, CA 921031467529479
- Nicholas Biase, RDNSan Diego, CA 921011386026755
- Bryana Piazza, MS, RDVista, CA 920811205245487
- Mary Collard, RD, CDCESOceanside, CA 920561366046526
- Andrea Harrison, RD., CDELa Jolla, CA 920371528231800
- Erika NiedernhoferEncinitas, CA 920241376887232
Common questions
What is Linda Illingworth, RD, CSSD's NPI number?
Linda Illingworth, RD, CSSD's National Provider Identifier (NPI) is 1457787665, issued on Sep 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Linda Illingworth, RD, CSSD located?
The NPPES record lists a practice address at 7138 Sherbourne LN, San Diego, CA, 92129. Phone: (858) 703-7090. Providers update this record themselves, so call before visiting.
How can I verify Linda Illingworth, RD, CSSD'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.