Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Dion Robert Mclennan

Behavior Analyst in Walnut Creek, CA · enumerated 2020.

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

National Provider Identifier

1720613441

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Dion Robert Mclennan

Sex Male

Practice address 1910 Olympic Blvd Ste 140150, Walnut Creek, CA, 94596

Phone (925) 433-0990

Enumeration date Mar 4, 2020

Last updated in NPPES Mar 4, 2020

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License F5771348 (CA) 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 Dion Mclennan practice?

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

What is the NPI number for Dion Mclennan?

The National Provider Identifier (NPI) for Dion Mclennan is 1720613441, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-04.