Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicole Gelin

Psychiatric/Mental Health Nurse Practitioner in Waltham, MA · enumerated 2022.

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

National Provider Identifier

1952042889

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Nicole Gelin

Sex Female

Practice address 431 River St Ste 2, Waltham, MA, 02453

Phone (781) 891-0555

Fax (508) 302-8448

Enumeration date Apr 5, 2022

Last updated in NPPES Jun 16, 2026

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN10002583 (MA) Primary

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License RN2262602 (MA) Secondary

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 1952042889 active?

Yes, as of the latest NPPES snapshot, NPI 1952042889 is active (record last updated 2026-06-16).

How do I verify Nicole Gelin's NPI record?

Cross-check NPI 1952042889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-16.