Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Greg Coronado, OD

Optometrist in Allen, TX · enumerated 2006.

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

National Provider Identifier

1750491593

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Registry record

Entity type Individual (Type 1)

Name Greg Coronado

Credential OD

Sex Male

Practice address 1110 North Greenville Avenue, Allen, TX, 75002

Phone (972) 396-0006

Fax (972) 396-0004

Enumeration date Aug 30, 2006

Last updated in NPPES Sep 19, 2008

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4789TG (TX) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
P00417953	Other	TX	MEDICARE RAILROAD PTAN

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 Greg Coronado?

Greg Coronado is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-19.