Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Joshua Alexander

Physical Therapist in Castle Rock, WA · enumerated 2021.

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

National Provider Identifier

1720753049

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Registry record

Entity type Individual (Type 1)

Name Robert Joshua Alexander

Sex Male

Practice address 51 Cowlitz St W, Castle Rock, WA, 98611

Phone (360) 374-4550

Enumeration date Aug 9, 2021

Last updated in NPPES Oct 30, 2025

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CP050457T (GA) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT70030755 (WA) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CP048952T (DE) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CP048866T (TX) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License P22709 (NC) Primary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CP047005T (SC) Secondary

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 1720753049 active?

Yes, as of the latest NPPES snapshot, NPI 1720753049 is active (record last updated 2025-10-30).

How do I verify Robert Alexander's NPI record?

Cross-check NPI 1720753049 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Elizabeth Dudenhofer Physical Therapist · Castle Rock, WA NPI 1952650186

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-30.