Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Janis Radziszewski

Behavior Analyst in Morris Plains, NJ · enumerated 2024 · practices at Hand Over Hand, LLC.

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

National Provider Identifier

1659101657

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Registry record

Entity type Individual (Type 1)

Name Janis Radziszewski

Sex Female

Practice address 1 Forest Ct, Morris Plains, NJ, 07950

Phone (973) 722-9693

Enumeration date Aug 5, 2024

Last updated in NPPES Apr 25, 2026

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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 Janis Radziszewski practice?

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

What is the NPI number for Janis Radziszewski?

The National Provider Identifier (NPI) for Janis Radziszewski is 1659101657, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-25.