NPI age
19 years
Enumerated 2007-04-25
● Active
Type 1 · Individual
DR. Mary Trotty Nickson, PH.D.
Nickson is 1 of 144 counselor providers in Allen and 1 of 23131 in Texas.
Primary specialty
Counselor
Plus 2 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-09-11
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 23131 active counselor providers in Texas.
NPI age
19 years
↑ 12 yr above median (7 yr)
State licenses
1 state
2% of peers hold multiple states
Subspecialties
2
In the 20% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-04Enumerated in NPPES
2007
2026
Where they practice
Practice location
100 Allentown Pkwy, #114
Allen, TX 750024200
Mailing address
807 Ridgemont Dr
Allen, TX 750025075
Specialties
-
Counselor PrimaryDefinition to come...
-
PsychologistA psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and...
-
PsychologistA psychologist whose specialty is concerned with the science and practice of psychology with children, youth, families; learners of all ages; and the schooling process. The basic education and training of school psychologists prepares...
Practice context
Part of a multi-provider practice. 6 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new counselor provider has been added in Allen in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
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