Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sierra Klaassens
Counselor in Pompton Plains, NJ · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427921097
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Registry record
Entity type Individual (Type 1)
Name Sierra Klaassens
Sex Female
Practice address 287 Boulevard Ste 2, Pompton Plains, NJ, 07444
Phone (845) 393-4723
Enumeration date Sep 29, 2025
Last updated in NPPES Sep 29, 2025
Taxonomy & licenses
101Y00000X Counselor Behavioral Health & Social Service Providers · License 37AC00909300 (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.
Frequently asked questions
Is NPI 1427921097 active?
Yes, as of the latest NPPES snapshot, NPI 1427921097 is active (record last updated 2025-09-29).
How do I verify Sierra Klaassens's NPI record?
Cross-check NPI 1427921097 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-29.