NPPES file of Aug 9, 2026

Tiffany Joyce Cooper, MS, RD

Registered Dietitian · San Diego, CA

Tiffany Joyce Cooper, MS, RD is a registered dietitian with a practice address in San Diego, California, and NPI 1538841853, issued on Aug 4, 2023. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1538841853
Name
Tiffany Joyce Cooper
Credential
MS, RD
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
3957 30TH St Unit 408, San Diego, CA 92104
Phone
(858) 442-3747
Enumerated
Aug 4, 2023
Record last updated
Aug 4, 2023
Medicare enrollment
Enrolled (PECOS I20260204003754); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Verify Tiffany Joyce Cooper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Dandelion Nutrition LLCSeattle, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tiffany Joyce Cooper among 7,148 registered dietitian records in California

Tiffany Joyce Cooper, 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. Its NPI, issued in 2023, is newer than 73% of them.

  • NPI issued2023 · 73% of these records are older, 20% newer
  • In a Medicare fileYes · 5% of these records are
  • In the CMS Doctors and Clinicians fileYes · 7% of these records are
  • Graduated2014 · median 2014 among the 529 with a school on file
  • Record last updated2023 · 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).

Registered Dietitian providers in California

There are 7,148 registered dietitian records in California.

The 8 registered dietitian records with the nearest ZIP codes

  1. Elisha Daigneault, RDSan Diego, CA 921041992100457
  2. Joanna Foley, RDSan Diego, CA 921041437622404
  3. Nadine Gregory, RDSan Diego, CA 921041982440590
  4. Sadiya HasanSan Diego, CA 921041003784091
  5. Amanda HibshmanSan Diego, CA 921041891057063
  6. Sophie Loberg, RDSan Diego, CA 921041558076737
  7. Stephanie Lu, RDNSan Diego, CA 921041134994460
  8. Nicholas ShieldsSan Diego, CA 921041689225880

Common questions

What is Tiffany Joyce Cooper, MS, RD's NPI number?

Tiffany Joyce Cooper, MS, RD's National Provider Identifier (NPI) is 1538841853, issued on Aug 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Tiffany Joyce Cooper, MS, RD located?

The NPPES record lists a practice address at 3957 30TH St Unit 408, San Diego, CA, 92104. Phone: (858) 442-3747. Providers update this record themselves, so call before visiting.

How can I verify Tiffany Joyce Cooper, 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. Medicare files from data.cms.gov. 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.