Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diego Marcellus Patterson

Behavior Analyst in Longmont, CO · enumerated 2025.

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

National Provider Identifier

1255208567

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Registry record

Entity type Individual (Type 1)

Name Diego Marcellus Patterson

Sex Male

Practice address 1823 Sunset Pl Ste C, Longmont, CO, 80501

Phone (720) 449-6676

Enumeration date Oct 21, 2025

Last updated in NPPES Oct 21, 2025

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Primary

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

Where does Diego Patterson practice?

The practice location on file with NPPES is in Longmont, CO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Diego Patterson?

The National Provider Identifier (NPI) for Diego Patterson is 1255208567, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-21.