Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William M Grosso, DC

Chiropractor in New City, NY · enumerated 2008.

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

National Provider Identifier

1639347651

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Registry record

Entity type Individual (Type 1)

Name Dr. William M Grosso

Credential DC

Sex Male

Practice address 490 Route 304, New City, NY, 10956

Phone (845) 634-7800

Fax (845) 639-1972

Enumeration date Feb 12, 2008

Last updated in NPPES Feb 12, 2008

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License X2597 (NY) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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

Where does William Grosso practice?

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

What is the NPI number for William Grosso?

The National Provider Identifier (NPI) for William Grosso is 1639347651, 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 2008-02-12.