Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

The Knee Joint Inc

Orthopedic Physical Therapist in Mill Valley, CA · enumerated 2012 · authorized official Richard Waldron, President.

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

National Provider Identifier

1346512506

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Registry record

Entity type Organization (Type 2)

Legal business name The Knee Joint Inc

Practice address 23 Reed Blvd, Mill Valley, CA, 94941

Phone (415) 302-0456

Enumeration date Feb 3, 2012

Last updated in NPPES Apr 20, 2012

Taxonomy & classification

2251X0800X Orthopedic Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT15104 (CA) Primary

Authorized official

Name Richard Waldron

Title President

Phone (415) 302-0456

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.

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Frequently asked questions

Where is The Knee Joint Inc located?

The practice location on file with NPPES is in Mill Valley, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-04-20. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Trina Mann Physical Therapist · Mill Valley, CA NPI 1730247347 Caroline Rybicki Physical Therapist · Mill Valley, CA NPI 1659997526 Jesus Prado Physical Therapy Clinic/Center · Mill Valley, CA NPI 1982370581

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-20.