Psychologist | Clinical Psychology

Dr. Mary Theresa Brenan, PHD

1400 20th St Nw, Suite 101, Washington, District Of Columbia, 20036-5906

About Dr. Mary Theresa Brenan

Dr. Mary Theresa Brenan is a psychologist based in Washington, District Of Columbia who is specialized in Clinical Psychology. Active license number of Dr. Mary Theresa Brenan is 1377 for Clinical Psychology in District Of Columbia. Her current practice location is 1400 20th St Nw, Suite 101, Washington. Patients can contact her at 202-833-2329. Dr. Mary Theresa Brenan, PHD, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1114137395.

Dr. Mary Theresa Brenan is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Mary Theresa Brenan'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 Theresa Brenan
Specialization Clinical Psychology
Credentials PHD
Gender Female
Practice Address: 1400 20th St Nw, Suite 101
Washington, DC - 20036-5906

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 Number1114137395
NPI Enumeration Date: 23 May, 2007
NPI Last Update On: 08 Jul, 2007

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 Theresa Brenan are as mentioned below.

License NumberSpecializationStateStatus
1377Clinical Psychology District Of ColumbiaPrimary

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 Theresa Brenan
5534 Nevada Ave Nw,
Washington, DC - 20015-1784
Phone: 202-833-2329

Book an Appointment with Dr. Mary Theresa Brenan

To schedule an appointment, contact Dr. Mary Theresa Brenan at 1400 20th St Nw, Suite 101, Washington, District Of Columbia or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mary Theresa Brenan:

Dr. Mary Theresa Brenan is a psychologist specializing in Clinical Psychology. She is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Mary Theresa Brenan 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 Theresa Brenan practices at 1400 20th St Nw, Suite 101, Washington, District Of Columbia, 20036-5906.

To schedule an appointment with Dr. Mary Theresa Brenan, please contact the office at 202-833-2329.

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