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Kathryn Calderwood, PA-C

Physician Assistant in Westminster, CO · enumerated 2018.

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

National Provider Identifier

1255825089

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Registry record

Entity type Individual (Type 1)
Name Kathryn Calderwood
Credential PA-C
Sex Female
Practice address 500 W 144th Ave Ste 130, Westminster, CO, 80023
Phone (303) 649-3800
Fax (303) 649-3819
Enumeration date Jun 15, 2018
Last updated in NPPES Mar 2, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA0005435 (CO) Primary
363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA.0005435 (CO) Secondary

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 Kathryn Calderwood?
Kathryn Calderwood is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2025-03-02.