Psychologist | General Psychology

Dr. Marc Joshua Diener, PH.D.

1800 Rockaway Ave, Suite 206a, Hewlett, New York, 11557-1665

About Dr. Marc Joshua Diener

Dr. Marc Joshua Diener is a psychologist based in Hewlett, New York who is specialized in General Psychology. Active license number of Dr. Marc Joshua Diener is 68017465 for General Psychology in New York. His current practice location is 1800 Rockaway Ave, Suite 206a, Hewlett. Patients can contact him at 646-246-1662 or can fax him at 646-871-0203. Dr. Marc Joshua Diener, PH.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1255632337.

Dr. Marc Joshua Diener 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. Marc Joshua Diener'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. Marc Joshua Diener
Specialization General Psychology
Credentials PH.D.
Gender Male
Practice Address: 1800 Rockaway Ave, Suite 206a
Hewlett, NY - 11557-1665
Fax 646-871-0203

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 Number1255632337
NPI Enumeration Date: 05 Nov, 2010
NPI Last Update On: 10 Jul, 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. Marc Joshua Diener are as mentioned below.

License NumberSpecializationStateStatus
68017465General Psychology New YorkPrimary
0810003955Clinical Psychology VirginiaSecondary

Mailing Address

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

Dr. Marc Joshua Diener
1800 Rockaway Ave, Suite 206a
Hewlett, NY - 11557-1665
Phone: 646-246-1662
Fax: 646-871-0203

Book an Appointment with Dr. Marc Joshua Diener

To schedule an appointment, contact Dr. Marc Joshua Diener at 1800 Rockaway Ave, Suite 206a, Hewlett, New York or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Marc Joshua Diener:

Dr. Marc Joshua Diener is a psychologist specializing in General Psychology. He 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.

Yes, Dr. Marc Joshua Diener 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. Marc Joshua Diener practices at 1800 Rockaway Ave, Suite 206a, Hewlett, New York, 11557-1665.

To schedule an appointment with Dr. Marc Joshua Diener, please contact the office at 646-246-1662.

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