Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Melissa Mahon, PSY.D.
Clinical Psychologist in Geneva, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932304102
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Registry record
Entity type Individual (Type 1)
Name Dr. Melissa Mahon
Credential PSY.D.
Sex Female
Practice address 28 S 5th St, Geneva, IL, 60134
Phone (847) 287-0916
Enumeration date Jun 18, 2007
Last updated in NPPES Nov 10, 2020
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071-008253 (IL) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 04515143 | Other | IL | BCBS# |
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
What is the NPI number for Melissa Mahon?
The National Provider Identifier (NPI) for Melissa Mahon is 1932304102, a Type 1 (individual) record in the CMS NPPES registry.
Where does Melissa Mahon practice?
The practice location on file with NPPES is in Geneva, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Julie Field Professional Counselor · Geneva, IL NPI 1013060276 Synergy Counseling Services Community/Behavioral Health Agency · Geneva, IL NPI 1750793337 Sean Martiny Mental Health Counselor · Geneva, IL NPI 1770028912 Stephanie O'Malley Counselor · Geneva, IL NPI 1053887034 Mary Stanek Clinical Social Worker · Geneva, IL NPI 1396215687 Patricia Ely Clinical Social Worker · Geneva, IL NPI 1700417045 Olivia Espinosa Clinical Social Worker · Geneva, IL NPI 1700550324 Journey To Present Inc. Clinical Psychologist · Geneva, IL NPI 1194456616
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-10.