Psychologist | Clinical Psychology

Dr. Gary Brett Gastman, PH.D.

35 Market St, 2nd Floor, Lowell, Massachusetts, 01852-1805

About Dr. Gary Brett Gastman

Dr. Gary Brett Gastman is a psychologist based in Lowell, Massachusetts who is specialized in Clinical Psychology. Active license number of Dr. Gary Brett Gastman is 6954 for Clinical Psychology in Massachusetts. His current practice location is 35 Market St, 2nd Floor, Lowell. Patients can contact him at 978-459-0389 or can fax him at 978-459-7642. Dr. Gary Brett Gastman, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1689709032.

Dr. Gary Brett Gastman 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Gary Brett Gastman'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. Gary Brett Gastman
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 35 Market St, 2nd Floor
Lowell, MA - 01852-1805
Fax 978-459-7642

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 Number1689709032
NPI Enumeration Date: 23 Feb, 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. Gary Brett Gastman are as mentioned below.

License NumberSpecializationStateStatus
6954Clinical Psychology MassachusettsPrimary

Mailing Address

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

Dr. Gary Brett Gastman
35 Market St, 2nd Floor
Lowell, MA - 01852-1805
Phone: 978-459-0389
Fax: 978-459-7642

Book an Appointment with Dr. Gary Brett Gastman

To schedule an appointment, contact Dr. Gary Brett Gastman at 35 Market St, 2nd Floor, Lowell, Massachusetts or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Gary Brett Gastman:

Dr. Gary Brett Gastman is a psychologist specializing in Clinical Psychology. He 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Gary Brett Gastman 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. Gary Brett Gastman practices at 35 Market St, 2nd Floor, Lowell, Massachusetts, 01852-1805.

To schedule an appointment with Dr. Gary Brett Gastman, please contact the office at 978-459-0389.

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