Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Sandra Ann Koscielski, M.A. CCC-SLP

Speech-Language Pathologist in Flemington, NJ · enumerated 2026.

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

National Provider Identifier

1720946189

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Registry record

Entity type Individual (Type 1)

Name Sandra Ann Koscielski

Credential M.A. CCC-SLP

Sex Female

Practice address Flemington, NJ, 08822

Phone (833) 937-2724

Fax (201) 660-8271

Enumeration date Jan 14, 2026

Last updated in NPPES Jan 14, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 41YS00309500 (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 Sandra Koscielski practice?

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

What is the NPI number for Sandra Koscielski?

The National Provider Identifier (NPI) for Sandra Koscielski is 1720946189, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-14.