NPI Portal NPI Lookup & Verification

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

Mr. Michael Calderon, ABOC

Optician in San Antonio, TX · enumerated 2023.

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

National Provider Identifier

1386336238

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Registry record

Entity type Individual (Type 1)
Name Mr. Michael Calderon
Credential ABOC
Sex Male
Practice address San Antonio, TX, 78245
Phone (210) 675-6171
Fax (210) 521-9387
Enumeration date May 22, 2023
Last updated in NPPES May 22, 2023

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

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers 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

How do I verify Michael Calderon's NPI record?
Cross-check NPI 1386336238 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1386336238 active?
Yes, as of the latest NPPES snapshot, NPI 1386336238 is active (record last updated 2023-05-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-22.