Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Alexander Zagat, M.D.

Neurology Physician in Valhalla, NY · enumerated 2014.

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

National Provider Identifier

1275952533

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Registry record

Entity type Individual (Type 1)

Name Dr. John Alexander Zagat

Credential M.D.

Sex Male

Practice address 100 Woods Rd, Valhalla, NY, 10595

Phone (914) 493-7000

Enumeration date Apr 15, 2014

Last updated in NPPES Aug 13, 2019

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 297039 (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
297039	Other	NY	NYS LICENSE

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

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 John Zagat?

John Zagat is registered in NPPES with the primary taxonomy of Neurology Physician. 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 2019-08-13.