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

Dr. Alexander Castro Jr., DPH, CHWI, CHW

Community Health Worker in Kingsville, TX · enumerated 2026 · practices at Oza & Castle, LLC.

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

National Provider Identifier

1053279828

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Castro Jr.

Credential DPH, CHWI, CHW

Sex Male

Practice address Kingsville, TX, 78363

Phone (210) 860-6206

Enumeration date Jan 12, 2026

Last updated in NPPES Jul 4, 2026

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

Taxonomy & licenses

405300000X Prevention Professional Other Service Providers · License 20725 (TX) Secondary

172V00000X Community Health Worker Other Service Providers · License 1446 (TX) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Alexander Castro?

The National Provider Identifier (NPI) for Alexander Castro is 1053279828, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alexander Castro practice?

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

Other providers at this practice address

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Oza & Castle, LLC Public Health or Welfare Agency · Kingsville, TX NPI 1720935307

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-04.