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

Allissa Eiser, RDN, CDN

Registered Dietitian in Rensselaer, NY · enumerated 2025.

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

National Provider Identifier

1033918644

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Registry record

Entity type Individual (Type 1)

Name Allissa Eiser

Credential RDN, CDN

Sex Female

Practice address Rensselaer, NY, 12144

Phone (989) 745-3452

Enumeration date Mar 8, 2025

Last updated in NPPES Mar 8, 2025

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 011244 (NY) Primary

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 Allissa Eiser?

Allissa Eiser 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 2025-03-08.