Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harriet Schoenberg Williams, PH.D

Clinical Psychologist in Ossining, NY · enumerated 2013.

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

National Provider Identifier

1285069336

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Registry record

Entity type Individual (Type 1)

Name Harriet Schoenberg Williams

Credential PH.D

Sex Female

Practice address 135 Croton Ave, 2e, Ossining, NY, 10562

Phone (800) 725-6280

Enumeration date Sep 9, 2013

Last updated in NPPES Sep 9, 2013

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 012136 (NY) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

What is the NPI number for Harriet Schoenberg Williams?

The National Provider Identifier (NPI) for Harriet Schoenberg Williams is 1285069336, a Type 1 (individual) record in the CMS NPPES registry.

Where does Harriet Schoenberg Williams practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-09.