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

Martha Marie Arnett, LCSW

Clinical Social Worker in Sewickley, PA · enumerated 2006.

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

National Provider Identifier

1598832099

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Martha Marie Arnett

Credential LCSW

Sex Female

Practice address Sewickley, PA, 15143

Phone (412) 749-9591

Enumeration date Nov 29, 2006

Last updated in NPPES Jul 9, 2007

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License CW014795 (PA) Primary

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

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 Martha Arnett practice?

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

What is the NPI number for Martha Arnett?

The National Provider Identifier (NPI) for Martha Arnett is 1598832099, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.