Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Demi Michele Piekarsky, APN

Pediatric Nurse Practitioner in Montvale, NJ · enumerated 2021.

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

National Provider Identifier

1609456375

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Registry record

Entity type Individual (Type 1)

Name Demi Michele Piekarsky

Credential APN

Sex Female

Practice address 135 Chestnut Ridge Rd Ste 1120, Montvale, NJ, 07645

Phone (201) 391-2020

Enumeration date Apr 8, 2021

Last updated in NPPES Aug 11, 2023

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 26NJ01089500 (NJ) 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

Where does Demi Piekarsky practice?

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

What is the NPI number for Demi Piekarsky?

The National Provider Identifier (NPI) for Demi Piekarsky is 1609456375, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-11.