in GREENWICH or STAMFORD, CT, or HARRISON, NY
Monday through Friday, 8:00 a.m. to 5:00 p.m.
Call 203.869.1145 or 800.999.9ONS, or complete the Appointment Request form. You will be asked for your insurance card information.
Bring with you to your appointment:
Current insurance card
List of current medications and medical conditions
Primary-care physician address and phone number and contact information for any physicians involved with your care
Recent diagnostic images such as CTs, MRIs, x-rays, bone scans, or EMGs
Fast track your check-in:
Patients who are new to ONS or who have not visited our offices in more than a year should complete the patient registration form on the ONS Patient Portal so as to avoid spending time in the waiting room.
Patients that do not complete their forms on the patient portal, must arrive 20 minutes before their appointment time to complete in office.
NOTE: 24 hours cancellation notice required
Online Appointment Request Form
You may use the following form to request an appointment and someone will call you to schedule: