Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cheryl A Armstrong, MD

Dermatology Physician in Denver, CO · enumerated 2006.

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

National Provider Identifier

1194705863

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Registry record

Entity type Individual (Type 1)

Name Cheryl A Armstrong

Credential MD

Sex Female

Practice address 777 Bannock St, Denver, CO, 80204

Phone (303) 602-5000

Enumeration date Jan 19, 2006

Last updated in NPPES May 29, 2024

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 43286 (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.

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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 Cheryl Armstrong?

Cheryl Armstrong is registered in NPPES with the primary taxonomy of Dermatology Physician. 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 2024-05-29.