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

Herman Castillo, NP

Family Nurse Practitioner in Eagle Pass, TX · enumerated 2022 · practices at United Medical Centers.

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

National Provider Identifier

1699427534

Verified

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Registry record

Entity type Individual (Type 1)

Name Herman Castillo

Credential NP

Sex Male

Practice address Eagle Pass, TX, 78852

Phone (830) 872-3460

Fax (830) 872-3470

Enumeration date Jan 21, 2022

Last updated in NPPES Mar 2, 2022

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1056588 (TX) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
APRN1056588	Other	TX	TEXAS BOARD OF NURSING
F09210606	Other	TX	AMERICA ACADEMY OF NURSE PRACTITIONERS
863218	Other	TX	TEXAS BOARD OF NURSING

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 Herman Castillo?

The National Provider Identifier (NPI) for Herman Castillo is 1699427534, a Type 1 (individual) record in the CMS NPPES registry.

Where does Herman Castillo practice?

The practice location on file with NPPES is in Eagle Pass, 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 2022-03-02.