Psychiatrist | 41+ years experience

Dr. Constantine Ioannou, M.D.

2201 Hempstead Tpke, Nassau University Medical Center, East Meadow, New York, 11554-1859

About Dr. Constantine Ioannou

Dr. Constantine Ioannou is a psychiatrist based in East Meadow, New York with 41 years of experience in Psychiatry. He completed his graduation in 1985. 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. Constantine Ioannou is 180863 for Psychiatry in New York. His current practice location is 2201 Hempstead Tpke, Nassau University Medical Center, East Meadow. Patients can contact him at 516-572-6511. Dr. Constantine Ioannou, M.D., specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1124124003.

Dr. Constantine Ioannou specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

Dr. Constantine Ioannou'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. Constantine Ioannou
Specialization Psychiatry
Credentials M.D.
Accepts Medicare Assignment Yes
Experience 41+ years
Graduation Year 1985
Gender Male
Practice Address: 2201 Hempstead Tpke, Nassau University Medical Center
East Meadow, NY - 11554-1859

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 1557252996
Enrollment ID I20040323001988
NPI Number1124124003
NPI Enumeration Date: 16 Sep, 2006
NPI Last Update On: 28 May, 2014

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. Constantine Ioannou are as mentioned below.

License NumberSpecializationStateStatus
180863Psychiatry New YorkPrimary

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which Dr. Constantine Ioannou is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Nassau Health Care Corporation (2961315221)156

Other Medical Identifiers

Other professional identifiers associated with Dr. Constantine Ioannou such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
01845358MedicaidNew York

Mailing Address

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

Dr. Constantine Ioannou
70 Glen St, Suite 260
Glen Cove, NY - 11542-2855
Phone: 516-656-4565

Book an Appointment with Dr. Constantine Ioannou

To schedule an appointment, contact Dr. Constantine Ioannou at 2201 Hempstead Tpke, Nassau University Medical Center, East Meadow, New York or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Constantine Ioannou:

Dr. Constantine Ioannou is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Dr. Constantine Ioannou has approximately 41 years of experience in Psychiatry.

Yes, Dr. Constantine Ioannou accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Constantine Ioannou 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. Constantine Ioannou practices at 2201 Hempstead Tpke, Nassau University Medical Center, East Meadow, New York, 11554-1859.

To schedule an appointment with Dr. Constantine Ioannou, please contact the office at 516-572-6511.

Reviews & Feedback

Have you visited Dr. Constantine Ioannou? Share your experience to help others looking for a psychiatrist in East Meadow, NY.

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