After-Hours Urgent Ortho Care is now available in Wilton, Monday to Friday from 4:00 pm to 7:00 pm and Saturdays from 12:00 to 4:00 pm. Walk-ins welcome.

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Please note: Orthopaedic & Neurosurgery Specialists (ONS) requires payment of outstanding balances at the time of check-in for your appointment. Thank you.

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Archives: Providers

Frank Aversano

About Frank J. Aversano, MD, is a board-certified orthopedic surgeon who is fellowship-trained in diagnosing and treating pediatric and adult hand and upper extremity conditions. Dr. Aversano’s expertise includes treatment of arthritis of the hand, wrist, and elbow; fractures and sports injuries of the hand and upper extremity; tendon and ligament injuries including rotator cuff […]

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Paul Apostolides

About Paul Apostolides, MD is a fellowship-trained neurosurgeon specializing in spine surgery and section head of neurosurgery at Greenwich Hospital. He has extensive experience in minimally invasive and reconstructive spine surgery including minimally invasive spinal fusion. Dr. Apostolides graduated from Stanford University and University of Massachusetts Medical School. He completed his residency at the Barrow […]

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Marc S. Kowalsky

About Dr. Marc Kowalsky is a board-certified orthopedic surgeon specializing in Sports Medicine and Shoulder & Elbow Surgery, practicing at the ONS offices in Greenwich, Harrison, and Stamford. After completing residency training at Columbia University Medical Center / New York Orthopaedic Hospital, he received fellowship training both in Sports Medicine at Lenox Hill Hospital / […]

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