NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adrianna Sienkiewicz, LPC

Professional Counselor in Clifton, NJ · enumerated 2023.

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

National Provider Identifier

1891574232

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Adrianna Sienkiewicz
Credential LPC
Sex Female
Practice address 1135 Clifton Ave Ste 207, Clifton, NJ, 07013
Phone (973) 988-4241
Enumeration date Sep 25, 2023
Last updated in NPPES Apr 20, 2026

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 37PC01153900 (NJ) Primary
LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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

How do I verify Adrianna Sienkiewicz's NPI record?
Cross-check NPI 1891574232 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1891574232 active?
Yes, as of the latest NPPES snapshot, NPI 1891574232 is active (record last updated 2026-04-20).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-20.