Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Heather Mcmahon, PSY.D.
Psychologist in Saint Joseph, MO · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023412855
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Registry record
Entity type Individual (Type 1)
Name Heather Mcmahon
Credential PSY.D.
Sex Female
Practice address 3505 Frederick Ave, Saint Joseph, MO, 64506
Phone (816) 387-2809
Enumeration date Oct 22, 2014
Last updated in NPPES Oct 22, 2014
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 2014035929 (MO) Primary
103T00000X Psychologist Behavioral Health & Social Service Providers · License 020441 (NY) Secondary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD 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.
Frequently asked questions
Where does Heather Mcmahon practice?
The practice location on file with NPPES is in Saint Joseph, MO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Heather Mcmahon?
The National Provider Identifier (NPI) for Heather Mcmahon is 1023412855, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Steven Stoner Psychiatric Pharmacist · Saint Joseph, MO NPI 1033116579 Leonard Ramlatchman Pharmacist · Saint Joseph, MO NPI 1538169958 State of Missouri Psychiatric Hospital · Saint Joseph, MO NPI 1104879444 State of Missouri Psychiatry Physician · Saint Joseph, MO NPI 1386691657 James Reynolds Forensic Psychiatry Physician · Saint Joseph, MO NPI 1467499772 Carol Gentry-Epley Clinical Psychologist · St. Joseph, MO NPI 1629018213 Jeanette Simmons Clinical Psychologist · Saint Joseph, MO NPI 1457458432 Kit Welsh Clinical Psychologist · Saint Joseph, MO NPI 1619060423
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-22.