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Jill Nielsen, NP

Q: What is the NPI number for Jill Nielsen?

The National Provider Identifier (NPI) for Jill Nielsen is 1720135924, a Type 1 (individual) record in the CMS NPPES registry.

Women's Health Nurse Practitioner in Patchogue, NY · enumerated 2007.

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

National Provider Identifier

1720135924

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Registry record

Entity type Individual (Type 1)

Name Jill Nielsen

Credential NP

Sex Female

Practice address 450 Waverly Ave, Suite 4, Patchogue, NY, 11772

Phone (631) 475-5705

Enumeration date Jan 3, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F390035-1 (NY) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 is the NPI number for Jill Nielsen?

The National Provider Identifier (NPI) for Jill Nielsen is 1720135924, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jill Nielsen practice?

The practice location on file with NPPES is in Patchogue, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.