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

Dr. Mary Trotty Nickson, PHD

Individual provider Professional Counselor · NPI 1245459189

Dr. Mary Trotty Nickson, PHD is a Professional Counselor in Allen, Texas. Practices as a sole proprietor. Licensed in Texas.

Licensed in
TX
In the registry since
2007
Specialties on file
3
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

100 Allentown Pkwy #114
Allen, TX 75002-4200
Phone: (972) 747-0059
Show map & directions

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

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence 11170 (TX)
Counseling Psychologist Taxonomy 103TC1900X · Licence 25148 (TX)
School Psychologist Taxonomy 103TS0200X · Licence 30454 (TX)

Record details

NPI number1245459189
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 25, 2007
Last updated in NPPESSeptember 11, 2025

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