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

Dr. Seth Jefferson Gillihan, PHD

Individual provider Cognitive & Behavioral Psychologist · NPI 1922245943

Dr. Seth Jefferson Gillihan, PHD is a Cognitive & Behavioral Psychologist in Haverford, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2009.

Licensed in
PA
In the registry since
2009
Specialties on file
2
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

355 Lancaster Ave Bldg E 2ND Fl
Haverford, PA 19041-1547
Phone: (610) 649-3265
Fax: (610) 537-5059
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PS016766 (PA)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X

Record details

NPI number1922245943
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJanuary 13, 2009
Last updated in NPPESAugust 10, 2012

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