New Patients or patients who have not visited ONS in more than a year, please arrive 15 minutes prior to your scheduled appointment time to complete your registration or save time by completing the forms online with this link> New Patient Registration and Medical History form.  Also please also bring the following to your appointment:

  • Insurance card
  • List of current medications and medical conditions
  • Primary-care physician address and phone, and contact information for other physicians involved with your care
  • Recent diagnostic images such as CTs, MRIs, x-rays, bone scans, or EMGs. Bring both original films and copies of reports.

6 Greenwich Office Park, Greenwich, CT 06831
Open: Monday- Friday | 8:00 a.m. to 5:00 p.m.

ONS Urgent Ortho Care Walk-in Hours: Monday- Thursday | 8:00 a.m. to 7:00 p.m. | Saturday | 12:00 p.m. – 4:00 p.m.

(Business office is located at 9 Greenwich Office Park)

Directions Southbound :

  • Take I-95 SOUTH
  • Take Exit 3/Arch St. Go RIGHT off the ramp onto Arch St.
  • Follow directions from Arch St.


  • Take I-95 NORTH
  • Take Exit 3/Arch Street. Go LEFT off the ramp onto Arch Street
  • Follow directions from Arch Street

From Arch Street in Greenwich

  • Continue straight on Arch St. Turn LEFT at the 2nd traffic light, just after the overpass, onto Railroad Ave.
  • At the second traffic light, turn RIGHT onto Prospect St.
  • At traffic light, turn LEFT onto West Putnam Ave. and proceed to 2nd traffic light.
  • Turn RIGHT at light onto Valley Drive. Proceed on Valley Drive (approximately .25 miles).
  • Turn LEFT at sign for Greenwich Office Park. ONS is building #6.

From Northern Westchester

  • Take I-684 SOUTH to Exit 3/ RT-22 NORTH for .2 miles.
  • Turn LEFT onto NY-22 N/Armonk Bedford Rd. for .5 miles.
  • Turn RIGHT onto North Greenwich Rd.which becomes Riversville Rd.
  • Continue on Riversville Rd. for 6 miles.
  • Turn LEFT at light onto Glenville Rd. for .2 miles.
  • Turn RIGHT onto East Weaver St. for 1.5 miles. Enter Greenwich Office Park on the left. ONS is building #6

From Merritt Parkway N & S

  • Take Exit 28 (Round Hill Rd.)
  • Going SOUTH: turn LEFT onto Round Hill Rd.
  • Going NORTH: turn RIGHT onto Round Hill Rd.
  • Proceed 2.8 miles to intersection of Round Hill Rd. and Lake Ave.
  • Turn RIGHT onto Lake Ave.and proceed 1.2 miles to rotary.  Turn RIGHT onto Glenville Rd. for .3 miles.
  • Turn LEFT onto Valley Drive for .6 miles. (Valley Drive becomes Upland Drive, then turns back into Valley Drive.) Turn RIGHT into Greenwich Office Park. ONS is building #6