Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Debra Linn Gren, PTA

Physical Therapy Assistant in Big Rapids, MI · enumerated 2008.

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

National Provider Identifier

1164670014

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Registry record

Entity type Individual (Type 1)

Name Debra Linn Gren

Credential PTA

Sex Female

Practice address 745 Water Tower Rd, Big Rapids, MI, 49307

Phone (231) 592-1061

Fax (231) 592-5139

Enumeration date Sep 4, 2008

Last updated in NPPES Sep 4, 2008

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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 specialty is Debra Gren?

Debra Gren is registered in NPPES with the primary taxonomy of Physical Therapy Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-04.