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

Dr. William Sullivan, PHD

Individual provider Counselor · NPI 1669809331

Dr. William Sullivan, PHD is a Counselor in Blythewood, South Carolina. Practices as a sole proprietor. Licensed in South Carolina.

Licensed in
SC
In the registry since
2013
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

18 Ascot Ct
Blythewood, SC 29016-9086
Phone: (803) 960-0299
Show map & directions

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

Specialties & licences

School Psychologist (primary) Taxonomy 103TS0200X · Licence 2970 (SC)
Counselor Taxonomy 101Y00000X

Record details

NPI number1669809331
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 26, 2013
Last updated in NPPESSeptember 26, 2013

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