Psychologist | Clinical Psychology | 31+ years experience

Dr. William Derry Heasley, PSY.D.

85 Eastern Ave, Suite 108, Gloucester, Massachusetts, 01930-1869

About Dr. William Derry Heasley

Dr. William Derry Heasley is a psychologist based in Gloucester, Massachusetts with 31 years of experience in Clinical Psychology. He completed his graduation in 1995. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. William Derry Heasley is 7033 for Clinical Psychology in Massachusetts. His current practice location is 85 Eastern Ave, Suite 108, Gloucester. Patients can contact him at 978-282-8281 or can fax him at 978-282-1143. Dr. William Derry Heasley, PSY.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1588728513.

Dr. William Derry Heasley 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. William Derry Heasley'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 Derry Heasley
Specialization Clinical Psychology
Credentials PSY.D.
Accepts Medicare Assignment Yes
Experience 31+ years
Graduation Year 1995
Gender Male
Practice Address: 85 Eastern Ave, Suite 108
Gloucester, MA - 01930-1869
Fax 978-282-1143

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.

PAC ID 5698747178
Enrollment ID I20040806000591
NPI Number1588728513
NPI Enumeration Date: 21 Dec, 2006
NPI Last Update On: 20 Jun, 2013

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 Derry Heasley are as mentioned below.

License NumberSpecializationStateStatus
7033Clinical Psychology MassachusettsPrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. William Derry Heasley such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
W05600OtherMassachusettsCLINICAL PSYCHOLOGIST

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 Derry Heasley
85 Eastern Ave, Suite 108
Gloucester, MA - 01930-1869
Phone: 978-282-8281
Fax: 978-282-1143

Book an Appointment with Dr. William Derry Heasley

To schedule an appointment, contact Dr. William Derry Heasley at 85 Eastern Ave, Suite 108, Gloucester, Massachusetts or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. William Derry Heasley:

Dr. William Derry Heasley 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.

Dr. William Derry Heasley has approximately 31 years of experience in Clinical Psychology.

Yes, Dr. William Derry Heasley accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. William Derry Heasley 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 Derry Heasley practices at 85 Eastern Ave, Suite 108, Gloucester, Massachusetts, 01930-1869.

To schedule an appointment with Dr. William Derry Heasley, please contact the office at 978-282-8281.

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