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

Mrs. Kathryn Stevenson Mahaffey, MSP, CCC-SLP

Speech-Language Pathologist in Mauldin, SC · enumerated 2006.

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

National Provider Identifier

1649356007

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Registry record

Entity type Individual (Type 1)

Name Mrs. Kathryn Stevenson Mahaffey

Credential MSP, CCC-SLP

Sex Female

Practice address Mauldin, SC, 29662

Phone (864) 255-7766

Enumeration date Oct 28, 2006

Last updated in NPPES Mar 12, 2008

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 3403 (SC) Primary

Other identifiers

Identifier	Type	State	Issuer
SA0542	Medicaid	SC	-

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 1649356007 active?

Yes, as of the latest NPPES snapshot, NPI 1649356007 is active (record last updated 2008-03-12).

How do I verify Kathryn Mahaffey's NPI record?

Cross-check NPI 1649356007 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 2008-03-12.