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

Dr. William Mark Posey, PHD

Individual provider Psychologist · NPI 1538335872

Dr. William Mark Posey, PHD is a Psychologist in Columbia, South Carolina. Practices as a sole proprietor. Licensed in South Carolina.

Licensed in
SC
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

33 Olde Springs Ct
Columbia, SC 29223-6024
Phone: (803) 935-5347
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 594 (SC)

Record details

NPI number1538335872
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 6, 2008
Last updated in NPPESMay 6, 2008

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