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

Sarah Louis Castiglia, LMHC, ATR

Mental Health Counselor in Tewksbury, MA · enumerated 2022.

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

National Provider Identifier

1881324093

Verified

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Registry record

Entity type Individual (Type 1)

Name Sarah Louis Castiglia

Credential LMHC, ATR

Sex Female

Practice address Tewksbury, MA, 01876

Phone (515) 890-9729

Enumeration date Jun 13, 2022

Last updated in NPPES Mar 19, 2025

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LMHC10002835 (MA) 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

Where does Sarah Castiglia practice?

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

What is the NPI number for Sarah Castiglia?

The National Provider Identifier (NPI) for Sarah Castiglia is 1881324093, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-19.