NPPES file of Aug 9, 2026

Catherine Diehl, MS, CNS

Nutritionist · Trumbull, CT

Catherine Diehl, MS, CNS is a nutritionist with a practice address in Trumbull, Connecticut, and NPI 1477201820, issued on Mar 15, 2022. Check the license (Connecticut CNS18138, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477201820
Name
Catherine Diehl
Credential
MS, CNS
Primary taxonomy
Nutritionist 133N00000X
License number
CNS18138 CT
Self-reported in NPPES; status is on the state search
Practice location
98 Woolsley Ave, Trumbull, CT 06611
Phone
(203) 858-4615
Enumerated
Mar 15, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Catherine Diehl in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
    Search for license CNS18138    Check 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
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Nutritionist providers in Connecticut

There are 112 nutritionist records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 112 in Connecticut → Every provider in Trumbull →

Other nutritionist records in Connecticut

  1. Amy AshinghurstGlastonbury, CT1043776461
  2. Alberta AsieduDanbury, CT1427717685
  3. Jennifer Ayala, CNSWestport, CT1558943407
  4. Heather Bauer, RDWestport, CT1588226880
  5. Alison Birks, LDNWoodbury, CT1801334131
  6. Francine BlintenOld Greenwich, CT1992637193
  7. Cheryl BonomoNorwalk, CT1427467745
  8. Koren Bradshaw, MS, CLCFairfield, CT1205308012
  9. Linda Buchanan Fischtrom, CD/NDarien, CT1700060696
  10. Stephanie Burr, CDN,CNSOakville, CT1942801154

Common questions

What is Catherine Diehl, MS, CNS's NPI number?

Catherine Diehl, MS, CNS's National Provider Identifier (NPI) is 1477201820, issued on Mar 15, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Catherine Diehl, MS, CNS located?

The NPPES record lists a practice address at 98 Woolsley Ave, Trumbull, CT, 06611. Phone: (203) 858-4615. Providers update this record themselves, so call before visiting.

How can I verify Catherine Diehl, MS, CNS's license?

NPPES lists Connecticut license number CNS18138, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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 27, 2026.