Psychologist | General Psychology

Dr. Tirrell De Gannes, PSY.D.

400 S Oyster Bay Rd Ste 102, Hicksville, New York, 11801-3500

About Dr. Tirrell De Gannes

Dr. Tirrell De Gannes is a psychologist based in Hicksville, New York who is specialized in General Psychology. Active license number of Dr. Tirrell De Gannes is 1629175039 for General Psychology in New York. His current practice location is 400 S Oyster Bay Rd Ste 102, Hicksville. Patients can contact him at 516-818-8383. Dr. Tirrell De Gannes, PSY.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1336794742.

Dr. Tirrell De Gannes 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. Tirrell De Gannes'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. Tirrell De Gannes
Specialization General Psychology
Credentials PSY.D.
Gender Male
Practice Address: 400 S Oyster Bay Rd Ste 102,
Hicksville, NY - 11801-3500

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 Number1336794742
NPI Enumeration Date: 03 Aug, 2019
NPI Last Update On: 03 Aug, 2019

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. Tirrell De Gannes are as mentioned below.

License NumberSpecializationStateStatus
1629175039General Psychology New YorkPrimary

Mailing Address

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

Dr. Tirrell De Gannes
10750 164th St,
Jamaica, NY - 11433-2435
Phone: 718-564-3879

Book an Appointment with Dr. Tirrell De Gannes

To schedule an appointment, contact Dr. Tirrell De Gannes at 400 S Oyster Bay Rd Ste 102, Hicksville, New York or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Tirrell De Gannes:

Dr. Tirrell De Gannes 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. Tirrell De Gannes 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. Tirrell De Gannes practices at 400 S Oyster Bay Rd Ste 102, Hicksville, New York, 11801-3500.

To schedule an appointment with Dr. Tirrell De Gannes, please contact the office at 516-818-8383.

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