NPI Portal NPI Lookup & Verification

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

Abby Jo Gerstein, RD, CDN

Registered Dietitian in Melville, NY · enumerated 2024.

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

National Provider Identifier

1972356301

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Registry record

Entity type Individual (Type 1)
Name Abby Jo Gerstein
Credential RD, CDN
Sex Female
Practice address Melville, NY, 11747
Enumeration date Apr 8, 2024
Last updated in NPPES Apr 8, 2024

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

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers 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

Is NPI 1972356301 active?
Yes, as of the latest NPPES snapshot, NPI 1972356301 is active (record last updated 2024-04-08).
How do I verify Abby Gerstein's NPI record?
Cross-check NPI 1972356301 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-08.