Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aaron Erdmanczyk, O.D.

Optometrist in San Antonio, TX · enumerated 2005.

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

National Provider Identifier

1578562377

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron Erdmanczyk

Credential O.D.

Sex Male

Practice address 800 Mccullough Ave, San Antonio, TX, 78215

Phone (210) 226-6169

Fax (210) 226-8365

Enumeration date Jul 14, 2005

Last updated in NPPES Jan 9, 2008

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 05995TG (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
8B5165	Other	TX	BLUE CROSS BLUE SHIELD
454209	Other	TX	NVA

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 Aaron Erdmanczyk?

Aaron Erdmanczyk 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-09.