New York Court Help

Suffolk County Courthouses

Suffolk County Supreme Court

Riverhead Location
Hon. Alan D. Oshrin Supreme Court Building
One Court Street
Riverhead, NY 11901

Central Islip Location
Cohalan Court Complex
400 Carleton Avenue
P.O. Box 9075
Central Islip, NY 11722

This court handles:
- Felonies
- Cases for more than $25,000 in money damages
- Divorce, separation, and annulment
- Cases to stop, regulate, or supervise private or governmental activities.

Phone Numbers

General Info: 631-852-2333 - Riverhead
  631-853-5423 - Central Islip


9:00 a.m. - 5:00 p.m.

ADA accessibility


Parking and additional information

Riverhead - There are spaces for people with disabilities located behind courthouse. Take L.I.E. to exit 72. Go East on Route 25 for two miles. Make a left at Court Street.

Central Islip - There's a parking lot. Parking for people with disabilites are located in the front row. Take Southern State Parkway to exit 43A. Go North on Carleton Avenue to the second traffic light and make a right. Make the first right to enter the parking lot.

 New York State Unified Court System