Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Colby Elise Williams-Haigler, LMSW

Social Worker in Valley Stream, NY · enumerated 2026 · practices at Chestnut Street Psychotherapy Lcsw, Pllc.

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

National Provider Identifier

1093638546

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Registry record

Entity type Individual (Type 1)

Name Colby Elise Williams-Haigler

Credential LMSW

Sex Female

Practice address 10 E Merrick Rd Ste 304, Valley Stream, NY, 11580

Phone (516) 875-2075

Enumeration date Aug 3, 2026

Last updated in NPPES Aug 3, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 113230 (NY) 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.

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Frequently asked questions

What is the NPI number for Colby Williams-Haigler?

The National Provider Identifier (NPI) for Colby Williams-Haigler is 1093638546, a Type 1 (individual) record in the CMS NPPES registry.

Where does Colby Williams-Haigler practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-03.