Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William A. Cook, M.D.

Specialist in Staten Island, NY · enumerated 2005.

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

National Provider Identifier

1790773299

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Registry record

Entity type Individual (Type 1)

Name Mr. William A. Cook

Credential M.D.

Sex Male

Practice address 1050 Clove Rd, Staten Island, NY, 10301

Phone (718) 816-6440

Fax (718) 816-3642

Enumeration date Oct 10, 2005

Last updated in NPPES Nov 12, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 152888 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
01546529	Medicaid	NY	-

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Cook?

William Cook is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-12.