Guillermo Diaz is a Hicksville, New York based nurse practitioner who is specialized as Psych/Mental Health nurse. Active license number of Guillermo Diaz is 402068 for Psych/Mental Health in New York. His current practice location is 185 W John St # 113, Hicksville. Patients can reach him at 646-856-9971 or can fax him at 516-531-8539. Guillermo Diaz is NP-P with specialization in Psych/Mental Health and his NPI number (Unique professional ID assigned by NPPES) is 1164975801. Guillermo Diaz provides a full range of primary mental health care services, including biopsychosocial assessment and diagnosis of patients with mental illness and co-occurring disorders. Treatment modalities include both medication and psychotherapeutic management. Psych/Mental Health Nurse Practitioner (PMHNP) works in a variety of settings, including inpatient, emergency and community-based mental health services.
Complete Profile:
Guillermo Diaz speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
Name:
Guillermo Diaz
Specialization:
Psych/Mental Health Nurse Practitioner (PMHNP)
Gender:
Male
Credentials:
NP-P
Practice Address:
185 W John St # 113, Hicksville, New York, 11801-1007
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 Number:
1164975801
NPI Enumeration Date:
29 Jul, 2016
NPI Last Update On:
05 Sep, 2025
Medical Licenses:
NPs can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Guillermo Diaz are as mentioned below.
License Number
Specialization
State
Status
402068
Psych/Mental Health
New York
Primary
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address:
Guillermo Diaz 185 W John St # 113, Hicksville, New York
Zip:
11801-1007
Phone Number:
646-856-9971
Fax Number:
516-531-8539
Patients can reach Guillermo Diaz at 185 W John St # 113, Hicksville, New York or can call to book an appointment on 646-856-9971.
Comments/ Reviews:
Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 October, 2025.