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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Therese M Williams, OT/L, CHT

Hand Occupational Therapist in Clarkston, MI · enumerated 2011 · practices at Michigan Orthopedic Rehab.

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

National Provider Identifier

1164721049

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Registry record

Entity type Individual (Type 1)
Name Therese M Williams
Credential OT/L, CHT
Sex Female
Practice address 7164 N Main St, Clarkston, MI, 48346
Phone (248) 625-6400
Fax (248) 625-6006
Enumeration date Mar 18, 2011
Last updated in NPPES Mar 18, 2011

Taxonomy & licenses

225XH1200X Hand Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5201003200 (MI) Primary
OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT 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.

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Frequently asked questions

Is NPI 1164721049 active?
Yes, as of the latest NPPES snapshot, NPI 1164721049 is active (record last updated 2011-03-18).
How do I verify Therese Williams's NPI record?
Cross-check NPI 1164721049 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 2011-03-18.