Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephanie Pivik Mager, M.D.

Obstetrics & Gynecology Physician in Windsor, CO · enumerated 2015.

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

National Provider Identifier

1093198608

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Registry record

Entity type Individual (Type 1)

Name Stephanie Pivik Mager

Credential M.D.

Sex Female

Practice address 1455 Main St Ste 150, Windsor, CO, 80550

Phone (970) 674-6460

Fax (970) 336-1505

Enumeration date Jun 30, 2015

Last updated in NPPES Aug 26, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301108204 (MI) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License DR.0063012 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Stephanie Mager?

Stephanie Mager is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Physician. 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 2021-08-26.