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DR. MARY TROTTY NICKSON PH.D.
NPI 1245459189
Counselor - Professional in Allen, TX

Active since April 25, 2007
100 ALLENTOWN PKWY, #114, ALLEN, TX 75002(972) 747-0059 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Mary Trotty Nickson Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARY TROTTY NICKSON PH.D. (NPI 1245459189) is an individual professional provider in Allen, Texas, licensed in Texas (11170) and active in the NPI registry since April 2007.

NPPES Registry Identity

NPI1245459189
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameDR. MARY TROTTY NICKSONCredential: PH.D.
Location Address100 ALLENTOWN PKWY, #114Allen, TX 75002-4200
Mailing Address807 Ridgemont DrAllen, TX 75002-5075 · (972) 396-1970
Phone(972) 747-0059
Sole ProprietorYes
Enumeration DateApril 25, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1245459189 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in TX · 11170
Also ListedPsychologist · CounselingTaxonomy 103TC1900X · License 25148 (TX)
Also ListedPsychologist · SchoolTaxonomy 103TS0200X · License 30454 (TX)
100 ALLENTOWN PKWY, Allen, TX 75002
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Other Names 1

Former Name (1)Miss Mary Elizabeth Trotty

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. HEIDI HENGSTENBERG STODDARD PSYD
Psychologist (Clinical)
100 ALLENTOWN PKWY, SUITE 114
ALLEN, TX 75002
Collin County (972) 359-1077
DR. CHERYL L LINDBERG PH.D.
Psychologist (Counseling)
100 ALLENTOWN PKWY, 114
ALLEN, TX 75002
Collin County (972) 727-5720
GROOM SENIOR LIVING INC
Residential Treatment Facility, Physical Disabilities
100 ALLENTOWN PKWY, STE 214
ALLEN, TX 75002
Collin County (214) 383-9077
DR HEIDI H STODDARD & ASSOCIATES
Psychologist (Clinical)
100 ALLENTOWN PKWY, SUITE 114
ALLEN, TX 75002
Collin County (972) 359-1077
CONFICARE LTD
Counselor (Mental Health)
100 ALLENTOWN PKWY, SUITE 207
ALLEN, TX 75002
Collin County (469) 310-2992
ELLEN KANEY-FRANCIS LCSW
Social Worker (Clinical)
100 ALLENTOWN PKWY, SUITE 207
ALLEN, TX 75002
Collin County (972) 233-1010

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Nickson's NPI number?

The NPI number for Mary Nickson is 1245459189. It was assigned to this individual provider in the NPPES registry on April 25, 2007.

Where is Mary Nickson located?

Mary Nickson practices at 100 Allentown Pkwy #114, Allen, TX 75002. The listed phone number is (972) 747-0059.

What is Mary Nickson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for Mary Nickson was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.