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

Mrs. Kathleen Byrnes Mccarthy, SLP

Speech-Language Pathologist in Rockville Centre, NY · enumerated 2008.

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

National Provider Identifier

1831334523

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Kathleen Byrnes Mccarthy

Credential SLP

Sex Female

Practice address Rockville Centre, NY, 11570

Phone (516) 536-9395

Enumeration date Dec 9, 2008

Last updated in NPPES Dec 9, 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 003528-1 (NY) Primary

SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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

Is NPI 1831334523 active?

Yes, as of the latest NPPES snapshot, NPI 1831334523 is active (record last updated 2008-12-09).

How do I verify Kathleen Mccarthy's NPI record?

Cross-check NPI 1831334523 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 2008-12-09.