Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Corey L Hahn, PSYD
Clinical Psychologist in Napa, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386847150
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Registry record
Entity type Individual (Type 1)
Name Dr. Corey L Hahn
Credential PSYD
Sex Male
Practice address 2100 Napa Vallejo Hwy., Napa, CA, 94558
Phone (707) 253-5000
Enumeration date Jun 7, 2007
Last updated in NPPES Apr 2, 2019
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 22291 (CA) Primary
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
What is the NPI number for Corey Hahn?
The National Provider Identifier (NPI) for Corey Hahn is 1386847150, a Type 1 (individual) record in the CMS NPPES registry.
Where does Corey Hahn practice?
The practice location on file with NPPES is in Napa, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Amardeep Sahota Internal Medicine Physician · Napa, CA NPI 1831192103 Claire Fry Psychiatric Pharmacist · Napa, CA NPI 1538151980 Lane Melgarejo Internal Medicine Physician · Napa, CA NPI 1588657308 Andrew Sawicki Podiatrist · Napa, CA NPI 1306834163 Ernest Hanes Psychiatry Physician · Napa, CA NPI 1659361574 Richard Frishman Psychiatry Physician · Napa, CA NPI 1174507347 David Morse Podiatrist · Napa, CA NPI 1871579748 Katherine Warburton Forensic Psychiatry Physician · Napa, CA NPI 1295709277
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-02.