Psychologist

Dr. William Mallon Iii

780 American Legion Hwy, Roslindale, Massachusetts, 02131-3908

About Dr. William Mallon Iii

Dr. William Mallon Iii is a psychologist based in Roslindale, Massachusetts who is specialized in Psychology. Active license number of Dr. William Mallon Iii is 023543 for Clinical Psychology in New York. His current practice location is 780 American Legion Hwy, Roslindale. Patients can contact him at 617-529-9281. Dr. William Mallon Iii NPI number (Unique professional ID assigned by NPPES) is 1558737916.

Dr. William Mallon Iii is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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. William Mallon Iii'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. William Mallon Iii
Specialization Psychology
Gender Male
Practice Address: 780 American Legion Hwy,
Roslindale, MA - 02131-3908

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 Number1558737916
NPI Enumeration Date: 19 Aug, 2015
NPI Last Update On: 13 Jul, 2022

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. William Mallon Iii are as mentioned below.

License NumberSpecializationStateStatus
023543Clinical Psychology New YorkPrimary
Counselor Secondary

Mailing Address

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

Dr. William Mallon Iii
718 Smyth Rd,
Manchester, NH - 03104-7007
Phone: 617-529-9281

Book an Appointment with Dr. William Mallon Iii

To schedule an appointment, contact Dr. William Mallon Iii at 780 American Legion Hwy, Roslindale, Massachusetts or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. William Mallon Iii:

Dr. William Mallon Iii 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. William Mallon Iii 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. William Mallon Iii practices at 780 American Legion Hwy, Roslindale, Massachusetts, 02131-3908.

To schedule an appointment with Dr. William Mallon Iii, please contact the office at 617-529-9281.

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