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

Mr. Michael Castro, O.D.

Optometrist in Schertz, TX · enumerated 2015.

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

National Provider Identifier

1841675360

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Michael Castro

Credential O.D.

Sex Male

Practice address Schertz, TX, 78154

Phone (210) 590-2482

Fax (210) 579-9490

Enumeration date Jul 26, 2015

Last updated in NPPES Sep 2, 2021

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 8683T (TX) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 8683TG (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
1770870883	Other	TX	GROUP NPI
1841675360	Other	TX	INDIVIDUAL NPI

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

What is the NPI number for Michael Castro?

The National Provider Identifier (NPI) for Michael Castro is 1841675360, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Castro practice?

The practice location on file with NPPES is in Schertz, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-02.