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

Diane K Mahoney, PH.D.

Psychologist in Concord Twp, OH · enumerated 2008 · practices at Halcyon Psychological Services Inc.

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

National Provider Identifier

1124296108

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Registry record

Entity type Individual (Type 1)
Name Diane K Mahoney
Credential PH.D.
Sex Female
Practice address Concord Twp, OH, 44077
Phone (440) 350-1932
Fax (440) 357-1558
Enumeration date Feb 13, 2008
Last updated in NPPES Nov 15, 2011

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 4763 (OH) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
620004908 Other OH RAILROAD MEDICARE

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.

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Frequently asked questions

What is the NPI number for Diane Mahoney?
The National Provider Identifier (NPI) for Diane Mahoney is 1124296108, a Type 1 (individual) record in the CMS NPPES registry.
Where does Diane Mahoney practice?
The practice location on file with NPPES is in Concord Twp, OH. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-15.