Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. William Orr Hahn, PHD

Individual provider Clinical Neuropsychologist · NPI 1568426765

Dr. William Orr Hahn, PHD is a Clinical Neuropsychologist in New Kensington, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
In the registry since
2006
Specialties on file
6
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

365 Freeport St
New Kensington, PA 15068-6014
Phone: (724) 337-0066
Fax: (724) 337-0745
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Psychologist (primary) Taxonomy 103TS0200X · Licence PS003428L (PA)
Clinical Neuropsychologist Taxonomy 103G00000X · Licence PS003428L (PA)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence PS003428L (PA)
Clinical Psychologist Taxonomy 103TC0700X · Licence PS003428L (PA)
Counseling Psychologist Taxonomy 103TC1900X · Licence PS003428L (PA)
Psychologist Taxonomy 103T00000X · Licence PS003428L (PA)

Record details

NPI number1568426765
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedApril 14, 2006
Last updated in NPPESJuly 13, 2026