Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sean Thomas Duffey, DPT

Physical Therapist in Fenton, MI · enumerated 2007.

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

National Provider Identifier

1609912203

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Registry record

Entity type Individual (Type 1)

Name Dr. Sean Thomas Duffey

Credential DPT

Sex Male

Practice address 400 Rounds Dr, Fenton, MI, 48430

Phone (810) 750-1996

Enumeration date Jan 30, 2007

Last updated in NPPES Mar 9, 2010

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5501014240 (MI) Primary

DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession. About the DPT 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Sean Duffey?

Sean Duffey is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-09.