NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brett E Fenster, M.D.

Cardiovascular Disease Physician in Lone Tree, CO · enumerated 2005.

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

National Provider Identifier

1649267964

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Registry record

Entity type Individual (Type 1)
Name Dr. Brett E Fenster
Credential M.D.
Sex Male
Practice address 10240 Park Meadows Dr, Lone Tree, CO, 80124
Phone (303) 338-4545
Enumeration date Oct 3, 2005
Last updated in NPPES Jun 13, 2021

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 43851 (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
55126847 Medicaid CO -
028188 Other CO KAISER COMMERCIAL NUMBER

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

How do I verify Brett Fenster's NPI record?
Cross-check NPI 1649267964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1649267964 active?
Yes, as of the latest NPPES snapshot, NPI 1649267964 is active (record last updated 2021-06-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-13.