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

Prof. William F Flack Jr., PHD

Individual provider Clinical Psychologist · NPI 1922597897

Prof. William F Flack Jr., PHD is a Clinical Psychologist in Lewisburg, Pennsylvania. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2018
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

1 Dent Dr
Lewisburg, PA 17837-2029
Phone: (570) 577-1131
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 7070-PY-PR (MA)

Record details

NPI number1922597897
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 7, 2018
Last updated in NPPESMay 7, 2018

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