Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Joseph Guarnaschelli, MD

Neurological Surgery Physician in Louisville, KY · enumerated 2006.

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

National Provider Identifier

1033210596

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Registry record

Entity type Individual (Type 1)

Name John Joseph Guarnaschelli

Credential MD

Sex Male

Practice address 234 E Gray St, Suite 768, Louisville, KY, 40202

Phone (502) 584-4121

Fax (502) 584-6626

Enumeration date Sep 26, 2006

Last updated in NPPES Nov 3, 2014

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 14746 (KY) 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
119046	Other	KY	SIHO - NNIKY
1048759	Other	-	PASSPORT PROVIDER #
000052155V	Other	KY	HUMANA - NNIKY
000000045440	Other	-	ANTHEM PROVIDER #
000000674359	Other	KY	ANTHEM - NNIKY
100383680	Other	IN	INDIANA MEDICAID
64147465	Medicaid	KY	-
50029962	Other	KY	PASSPORT & PASSPORT ADVANTAGE - NNIKY
2529982	Other	KY	CIGNA - NNIKY

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 specialty is John Guarnaschelli?

John Guarnaschelli is registered in NPPES with the primary taxonomy of Neurological Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-03.