Psychologist | Clinical Psychology

Dr. Mary Lou Pierron, PSY.D.

63 College Ave, Somerville, Massachusetts, 02144-1957

About Dr. Mary Lou Pierron

Dr. Mary Lou Pierron is a psychologist based in Somerville, Massachusetts who is specialized in Clinical Psychology. Active license number of Dr. Mary Lou Pierron is 4004 for Clinical Psychology in Massachusetts. Her current practice location is 63 College Ave, Somerville. Patients can contact her at 617-629-6628 or can fax her at 617-629-4454. Dr. Mary Lou Pierron, PSY.D., specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1699984781.

Dr. Mary Lou Pierron 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 Lou Pierron'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 Lou Pierron
Specialization Clinical Psychology
Credentials PSY.D.
Gender Female
Practice Address: 63 College Ave,
Somerville, MA - 02144-1957
Fax 617-629-4454

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 Number1699984781
NPI Enumeration Date: 22 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 Lou Pierron are as mentioned below.

License NumberSpecializationStateStatus
4004Clinical 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. Mary Lou Pierron
63 College Ave,
Somerville, MA - 02144-1999
Phone: 617-629-6628
Fax: 617-629-4454

Book an Appointment with Dr. Mary Lou Pierron

To schedule an appointment, contact Dr. Mary Lou Pierron at 63 College Ave, Somerville, Massachusetts or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Mary Lou Pierron:

Dr. Mary Lou Pierron 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 Lou Pierron 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 Lou Pierron practices at 63 College Ave, Somerville, Massachusetts, 02144-1957.

To schedule an appointment with Dr. Mary Lou Pierron, please contact the office at 617-629-6628.

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