Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen J Annest, MD

Vascular Surgery Physician in Denver, CO · enumerated 2005.

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

National Provider Identifier

1093792590

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen J Annest

Credential MD

Sex Male

Practice address 4105 E Florida Ave Ste 200, Denver, CO, 80222

Phone (303) 539-0736

Fax (303) 539-0737

Enumeration date Dec 27, 2005

Last updated in NPPES Jul 18, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 34233 (CO) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 34233 (CO) Primary

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

Other identifiers

Identifier	Type	State	Issuer
01342336	Medicaid	CO	-
770000990	Other	CO	RAILROAD MEDICARE

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 Stephen Annest?

Stephen Annest is registered in NPPES with the primary taxonomy of Vascular Surgery 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.

Other providers at this practice address

Browse all →

Bryan Kramer Vascular Surgery Physician · Denver, CO NPI 1942290721 Alan Synn Vascular Surgery Physician · Denver, CO NPI 1912984386 Omar Mubarak Specialist · Denver, CO NPI 1740222322 Annest Synn Nowak & Mubarak Professional LLC Specialist · Denver, CO NPI 1477660850 Sara Montanez Physician Assistant · Denver, CO NPI 1942439047 Brandon Roy-Garland Vascular Surgery Physician · Denver, CO NPI 1235454497 Jawad Kiani Interventional Cardiology Physician · Denver, CO NPI 1588975544 Barbara Melendez Vascular Surgery Physician · Denver, CO NPI 1598076572

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-18.