Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Heather A Byrne, PHD

Psychologist in Mequon, WI · enumerated 2006.

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

National Provider Identifier

1942219589

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Registry record

Entity type Individual (Type 1)

Name Dr. Heather A Byrne

Credential PHD

Sex Female

Practice address 14135 N Cedarburg Rd, # 203, Mequon, WI, 53097

Phone (414) 588-8822

Enumeration date Aug 5, 2006

Last updated in NPPES Feb 13, 2017

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 1943-057 (WI) Primary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 35573-057 (MS) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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 1942219589 active?

Yes, as of the latest NPPES snapshot, NPI 1942219589 is active (record last updated 2017-02-13).

How do I verify Heather Byrne's NPI record?

Cross-check NPI 1942219589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Carolyn Becker Psychologist · Mequon, WI NPI 1043363815 Paul Gibeau Psychologist · Mequon, WI NPI 1316083686 Melissa Hale Clinical Social Worker · Mequon, WI NPI 1285883868 Becker-Gibeau Psychological Services LLC Clinical Psychologist · Mequon, WI NPI 1972756013 Kelly Duggan Clinical Psychologist · Mequon, WI NPI 1164657409 Jean M. Monty Phd Psychological Services LLC Psychologist · Mequon, WI NPI 1861790933 Heather A Byrne Phd Psychological Services LLC Psychologist · Mequon, WI NPI 1154679231 Kathryn Lapierre, Ph.D. LLC Clinical Psychologist · Mequon, WI NPI 1609211960

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-13.