Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine S Rouser, LMSW

Social Worker in Simpsonville, SC · enumerated 2008 · practices at South Carolina Dept of Mental Health Accounting Office.

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

National Provider Identifier

1558523936

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Registry record

Entity type Individual (Type 1)

Name Katherine S Rouser

Credential LMSW

Sex Female

Practice address 20 Powderhorn Rd, Simpsonville, SC, 29681

Phone (864) 963-3421

Fax (864) 962-0758

Enumeration date Jun 27, 2008

Last updated in NPPES Jun 27, 2008

Taxonomy & licenses

104100000X Social Worker 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Katherine Rouser?

The National Provider Identifier (NPI) for Katherine Rouser is 1558523936, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Rouser practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-27.