Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Dawn Crystal Gudmundsen

Behavior Analyst in East Northport, NY · enumerated 2013.

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

National Provider Identifier

1053744532

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Registry record

Entity type Individual (Type 1)

Name Mrs. Dawn Crystal Gudmundsen

Sex Female

Practice address East Northport, NY, 11731

Phone (484) 965-9966

Fax (484) 231-8631

Enumeration date Aug 19, 2013

Last updated in NPPES Aug 30, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

251S00000X Community/Behavioral Health Agency Agencies · License 703164131 (NY) Secondary

251S00000X Community/Behavioral Health Agency Agencies · License 504297111 (NY) Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 001033 (NY) 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

How do I verify Dawn Gudmundsen's NPI record?

Cross-check NPI 1053744532 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1053744532 active?

Yes, as of the latest NPPES snapshot, NPI 1053744532 is active (record last updated 2021-08-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-30.