Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anthony Richard Declusin, MD

Neurology Physician in Longmont, CO · enumerated 2018.

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

National Provider Identifier

1669977997

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Registry record

Entity type Individual (Type 1)

Name Anthony Richard Declusin

Credential MD

Sex Male

Practice address 1925 Mountain View Ave, Longmont, CO, 80501

Phone (720) 718-8070

Fax (720) 494-3107

Enumeration date Mar 28, 2018

Last updated in NPPES Jul 6, 2023

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License DR.0066615 (CO) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License DR.0066615 (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
9000163141	Medicaid	CO	-

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

Is NPI 1669977997 active?

Yes, as of the latest NPPES snapshot, NPI 1669977997 is active (record last updated 2023-07-06).

How do I verify Anthony Declusin's NPI record?

Cross-check NPI 1669977997 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-06.