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

Mrs. Theresa Lynn Schirg, LSW

Social Worker in Factoryville, PA · enumerated 2012.

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

National Provider Identifier

1669746913

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Registry record

Entity type Individual (Type 1)

Name Mrs. Theresa Lynn Schirg

Credential LSW

Sex Female

Practice address Factoryville, PA, 18419

Phone (570) 945-7083

Enumeration date Mar 5, 2012

Last updated in NPPES Mar 5, 2012

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License SW012575L (PA) 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

Is NPI 1669746913 active?

Yes, as of the latest NPPES snapshot, NPI 1669746913 is active (record last updated 2012-03-05).

How do I verify Theresa Schirg's NPI record?

Cross-check NPI 1669746913 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-05.