Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adriana Silvia Nicastro Twelker, LCSW

Clinical Social Worker in Tucson, AZ · enumerated 2010.

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

National Provider Identifier

1366758948

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Registry record

Entity type Individual (Type 1)

Name Adriana Silvia Nicastro Twelker

Credential LCSW

Sex Female

Practice address 434 E University Blvd Fl 2, Tucson, AZ, 85705

Phone (520) 670-3909

Fax (520) 309-2560

Enumeration date Aug 20, 2010

Last updated in NPPES Mar 13, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW10478 (AZ) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
LCSW10478	Other	AZ	LICENSE

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 Adriana Nicastro Twelker?

The National Provider Identifier (NPI) for Adriana Nicastro Twelker is 1366758948, a Type 1 (individual) record in the CMS NPPES registry.

Where does Adriana Nicastro Twelker practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-13.