Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jennifer Callahan, PH.D.
Psychologist in Denton, TX · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1992917579
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Registry record
Entity type Individual (Type 1)
Name Dr. Jennifer Callahan
Credential PH.D.
Sex Female
Practice address 1155 Union Cir # 311280, Denton, TX, 76203
Phone (940) 565-2631
Enumeration date May 4, 2007
Last updated in NPPES Apr 15, 2011
Taxonomy & licenses
103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 982 (OK) 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.
Frequently asked questions
Where does Jennifer Callahan practice?
The practice location on file with NPPES is in Denton, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jennifer Callahan?
The National Provider Identifier (NPI) for Jennifer Callahan is 1992917579, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Daniel Taylor Cognitive & Behavioral Psychologist · Denton, TX NPI 1851680367 David Cicero Clinical Psychologist · Denton, TX NPI 1588957153 Shelley Riggs Counseling Psychologist · Denton, TX NPI 1164775359 Deisy Gonzalez Zapata Student in an Organized Health Care Education/Training Program · Denton, TX NPI 1558198671
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-15.