Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Elizabeth Margaret Sinclair, MS CF-SLP

Speech-Language Pathologist in Maple Valley, WA · enumerated 2010 · practices at Rock Therapeutic Services LLC.

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

National Provider Identifier

1477872067

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Registry record

Entity type Individual (Type 1)

Name Mrs. Elizabeth Margaret Sinclair

Credential MS CF-SLP

Sex Female

Practice address 22443 Se 240th St, Suite B101, Maple Valley, WA, 98038

Phone (425) 358-7160

Enumeration date May 22, 2010

Last updated in NPPES Jun 15, 2015

Taxonomy & licenses

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers Secondary

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
7980709	Medicaid	WA	-

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 1477872067 active?

Yes, as of the latest NPPES snapshot, NPI 1477872067 is active (record last updated 2015-06-15).

How do I verify Elizabeth Sinclair's NPI record?

Cross-check NPI 1477872067 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-15.