Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Thielen, OTR

Hand Occupational Therapist in Corvallis, OR · enumerated 2015 · practices at Upper Hand Orthopaedics, P.C..

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

National Provider Identifier

1306221510

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Registry record

Entity type Individual (Type 1)

Name Gregory Thielen

Credential OTR

Sex Male

Practice address 2797 Nw 9th St, Corvallis, OR, 97330

Phone (541) 207-0910

Enumeration date Jul 29, 2015

Last updated in NPPES Jul 29, 2015

Taxonomy & licenses

225XH1200X Hand Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 914584 (OR) Primary

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

What is the NPI number for Gregory Thielen?

The National Provider Identifier (NPI) for Gregory Thielen is 1306221510, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Thielen practice?

The practice location on file with NPPES is in Corvallis, OR. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Lorraine Resoff Physical Therapist · Corvallis, OR NPI 1639120306 Upper Hand Orthopaedics, P.C. Orthopaedic Hand Surgery Physician · Corvallis, OR NPI 1053669606

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-29.