Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Myllissa Mcduffie

Behavior Analyst in Penfield, NY · enumerated 2019.

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

National Provider Identifier

1659925931

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Registry record

Entity type Individual (Type 1)

Name Myllissa Mcduffie

Sex Female

Practice address 2025 Penfield Rd, Penfield, NY, 14526

Phone (818) 241-6780

Enumeration date Jul 25, 2019

Last updated in NPPES Jul 25, 2019

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

Is NPI 1659925931 active?

Yes, as of the latest NPPES snapshot, NPI 1659925931 is active (record last updated 2019-07-25).

How do I verify Myllissa Mcduffie's NPI record?

Cross-check NPI 1659925931 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 2019-07-25.