Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Miss Courtney Jacqueline Cayer, RD

Registered Dietitian in Ipswich, MA · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1124607668

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Miss Courtney Jacqueline Cayer

Credential RD

Sex Female

Practice address Ipswich, MA, 01938

Phone (781) 835-5429

Enumeration date Apr 2, 2021

Last updated in NPPES Apr 2, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86145617 (MA) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Courtney Cayer?

Courtney Cayer is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-02.