Psychologist | Addiction (Substance Use Disorder) Psychology

William O Thomason, PH.D

1200 E Brin St, Terrell, Texas, 75160

About William O Thomason

William O Thomason is a psychologist based in Terrell, Texas who is specialized in Addiction (Substance Use Disorder) Psychology. Active license number of William O Thomason is 25481 for Family Psychology in Texas. His current practice location is 1200 E Brin St, Terrell. Patients can contact him at 972-551-8826. William O Thomason, PH.D, specializes in Addiction (Substance Use Disorder) Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1912069543.

William O Thomason help patients to develop ways to cope with their drug cravings. Also, he can suggest strategies to avoid drugs and prevent relapse, and can offer suggestions on how to deal with a relapse if it occurs. He make patients more aware of their feelings, thoughts and teach them different ways to deal with their problems.

Practice Information

William O Thomason'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 William O Thomason
Specialization Addiction (Substance Use Disorder) Psychology
Credentials PH.D
Gender Male
Practice Address: 1200 E Brin St,
Terrell, TX - 75160

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 Number1912069543
NPI Enumeration Date: 13 Dec, 2006
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 William O Thomason are as mentioned below.

License NumberSpecializationStateStatus
25481Family Psychology TexasPrimary
25481Addiction (Substance Use Disorder) Psychology TexasSecondary
25481Clinical 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.

William O Thomason
Po Box 70,
Terrell, TX - 75160

Book an Appointment with William O Thomason

To schedule an appointment, contact William O Thomason at 1200 E Brin St, Terrell, Texas or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William O Thomason:

William O Thomason is a psychologist specializing in Family Psychology. He treat families and individuals, by helping to solve and prevent problems within the family unit. He also provides counseling on marriage and divorce, abuse, bereavement, mental health, youth behavior problems, parenting and adoption. Family psychology studies the family as a system, analyzing behaviors, communication patterns and emotional responses among family members.

Yes, William O Thomason 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.

William O Thomason practices at 1200 E Brin St, Terrell, Texas, 75160.

To schedule an appointment with William O Thomason, please contact the office at 972-551-8826.

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