Therapist

William Diaz

39 Boylston Street, Boston, Massachusetts, 02116

About William Diaz

William Diaz is a therapist based in Boston, Massachusetts who is specialized in Counselor. His current practice location is 39 Boylston Street, Boston. Patients can reach him at 617-654-1218. William Diaz NPI number (Unique professional ID assigned by NPPES) is 1811464266.

William Diaz is a trained and licensed mental health professional who helps individuals, couples, or groups manage and overcome emotional, psychological, behavioral, or relationship challenges. He works with people dealing with anxiety, depression, mood disorders, trauma, post-traumatic stress disorder (PTSD), grief and loss etc. He support his clients by understanding their thoughts, emotions, and behaviors.

Practice Information

William Diaz speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name William Diaz
Specialization Counselor
Gender Male
Practice Address: 39 Boylston Street,
Boston, MA - 02116

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1811464266
NPI Enumeration Date: 24 Oct, 2018
NPI Last Update On: 24 Oct, 2018

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for William Diaz are as mentioned below.

License NumberSpecializationStateStatus
Counselor Primary

Mailing Address

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

William Diaz
39 Boylston St,
Boston, MA - 02116-4702
Phone: 617-654-1218

Book an Appointment with William Diaz

To schedule an appointment, contact William Diaz at 39 Boylston Street, Boston, Massachusetts or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William Diaz:

William Diaz is a therapist specializing in Counselor. He is a trained and licensed mental health professional who helps individuals, couples, or groups manage and overcome emotional, psychological, behavioral, or relationship challenges. He works with people dealing with anxiety, depression, mood disorders, trauma, post-traumatic stress disorder (PTSD), grief and loss etc. He support his clients by understanding their thoughts, emotions, and behaviors.

Yes, William Diaz is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

William Diaz practices at 39 Boylston Street, Boston, Massachusetts, 02116.

To schedule an appointment with William Diaz, please contact the office at 617-654-1218.

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