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

Dr. O A Watson Jr., OD

Vision Therapy Optometrist in San Marcos, TX · enumerated 2005 · practices at Blue Moon Optical.

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

National Provider Identifier

1518954510

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Registry record

Entity type Individual (Type 1)
Name Dr. O A Watson Jr.
Credential OD
Sex Male
Practice address San Marcos, TX, 78666
Phone (512) 396-3737
Fax (512) 396-3745
Enumeration date Oct 4, 2005
Last updated in NPPES Jun 12, 2008

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

Taxonomy & licenses

152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License 2196T (TX) Primary
152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License 2470 (CO) Secondary
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
00E89B Other TX BLUE CROSS BLUE SHIELD
5123963737 Other TX VSP

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 is the NPI number for O Watson?
The National Provider Identifier (NPI) for O Watson is 1518954510, a Type 1 (individual) record in the CMS NPPES registry.
Where does O Watson practice?
The practice location on file with NPPES is in San Marcos, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-12.