Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alonzo James Calle Castellon, RBT

Behavior Technician in Stafford, VA · enumerated 2022.

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

National Provider Identifier

1265143879

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Registry record

Entity type Individual (Type 1)

Name Alonzo James Calle Castellon

Credential RBT

Sex Female

Practice address 11 Hope Rd Ste 215, Stafford, VA, 22554

Phone (540) 225-1020

Enumeration date Dec 6, 2022

Last updated in NPPES Dec 6, 2022

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service 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

Where does Alonzo Calle Castellon practice?

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

What is the NPI number for Alonzo Calle Castellon?

The National Provider Identifier (NPI) for Alonzo Calle Castellon is 1265143879, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-06.