Psychologist

Dr. Mary Trotty Nickson, PH.D.

100 Allentown Pkwy, #114, Allen, Texas, 75002-4200

About Dr. Mary Trotty Nickson

Dr. Mary Trotty Nickson is a psychologist based in Allen, Texas who is specialized in Psychology. Active license number of Dr. Mary Trotty Nickson is 11170 for Psychology in Texas. Her current practice location is 100 Allentown Pkwy, #114, Allen. Patients can contact her at 972-747-0059. Dr. Mary Trotty Nickson, PH.D., specializes in Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1245459189.

Dr. Mary Trotty Nickson is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Mary Trotty Nickson's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Mary Trotty Nickson
Specialization Psychology
Credentials PH.D.
Gender Female
Practice Address: 100 Allentown Pkwy, #114
Allen, TX - 75002-4200

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1245459189
NPI Enumeration Date: 25 Apr, 2007
NPI Last Update On: 11 Sep, 2025

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Mary Trotty Nickson are as mentioned below.

License NumberSpecializationStateStatus
11170Psychology TexasPrimary
25148Counseling Psychology TexasSecondary
30454School Psychology TexasSecondary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Mary Trotty Nickson
807 Ridgemont Dr,
Allen, TX - 75002-5075
Phone: 972-396-1970

Book an Appointment with Dr. Mary Trotty Nickson

To schedule an appointment, contact Dr. Mary Trotty Nickson at 100 Allentown Pkwy, #114, Allen, Texas or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Mary Trotty Nickson:

Dr. Mary Trotty Nickson is a psychologist specializing in Psychology. She is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Yes, Dr. Mary Trotty Nickson is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Mary Trotty Nickson practices at 100 Allentown Pkwy, #114, Allen, Texas, 75002-4200.

To schedule an appointment with Dr. Mary Trotty Nickson, please contact the office at 972-747-0059.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.