ONS - Connecticut's premier orthopedic & neurosurgery practice
With 18 sub-specialty trained physicians in orthopedics, neurosurgery, sports medicine and physical medicine/rehabilitation, ONS in Greenwich, Connecticut is the largest and most comprehensive practice of its kind in the region.
ONS patients are matched to the physician specialist with the training and expertise to meet their specific needs:
ONS Orthopedic Center physicians diagnose and treat the complete spectrum of musculoskeletal conditions from minor strains and stress fractures to degenerative arthritis. Our specialized physicians are leaders in their fields, experienced in the most advanced treatments and surgical procedures.
ONS Spine Center physicians are skilled in the latest advances for treating simple to complex disorders of the spine including minimally invasive spine surgery. In addition to the spine center at ONS in Greenwich, patients may see a neurosurgeon at the ONS Stamford office at the Tully Health Center.
ONS Sports Medicine physicians treat sports-related injuries in professional, student and recreational athletes. Several have served as consultants to many professional teams and currently work with the New York Mets and Texas Rangers.
A state-of-the-art MRI and a Physical Therapy & Rehabilitation center facilitate a patient’s complete care all in one place.
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Visit the ONS Blog and read regular updates about our physicians and news in the fields of orthopedics, sports medicine and neurosurgery.
ONS AWARDED FULL ACCREDITATION BY AMERICAN COLLEGE OF RADIOLOGY
The ONS Magnetom Espree Open Bore MRI has received accreditation by the ACR for the achievement of high practice standards after a thorough survey by a panel of board-certified physicians and medical physicists. Read more>

ONS DOCTOR TO JOIN OLYMPIC GAMES MEDICAL TEAM
Gloria Cohen, MD was selected to be a member of the host medical staff for the XXI Olympic Winter Games in Vancouver, British Columbia, Canada.
Read more>
EIGHT ONS PHYSICIANS in Castle Connolly Top Doctors, New York Metro Area guidebook:
Neurosurgeon:
Paul Apostolides, MD
Orthopedists:
Michael Clain, MD
John Crowe, MD
James Cunningham, MD
Brian Kavanagh, MD
Paul Sethi, MD
Physiatrists:
Jeffrey Heftler, MD
Halina Snowball, MD
more>
ONS is committed to providing excellent orthopaedic and neurosurgical care through integrative knowledge, cooperation among personnel and compassion for our patients. By setting the highest of standards, we can confidently offer patients the best options for the best possible outcomes.