Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Cristian Gragnaniello

Neurological Surgery Physician in San Antonio, TX · enumerated 2016.

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

National Provider Identifier

1255875803

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Registry record

Entity type Individual (Type 1)

Name Cristian Gragnaniello

Sex Male

Practice address San Antonio, TX, 78229

Phone (210) 358-8555

Fax (210) 358-8576

Enumeration date Dec 15, 2016

Last updated in NPPES Nov 22, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License MTL003987 (DC) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 47795 (TX) 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

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 Cristian Gragnaniello?

Cristian Gragnaniello 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-22.