Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Ellington Pomeroy Wintersieck, PT, DPT

Physical Therapist in Thornton, CO · enumerated 2012.

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

National Provider Identifier

1437405644

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Ellington Pomeroy Wintersieck

Credential PT, DPT

Sex Female

Practice address 9351 Grant St Ste 430, Thornton, CO, 80229

Phone (303) 280-1211

Enumeration date Jul 25, 2012

Last updated in NPPES Dec 4, 2017

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PTL.0011783 (CO) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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

What specialty is Mary Wintersieck?

Mary Wintersieck 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.

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 2017-12-04.