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ONS Greenwich Urgent Ortho Care will be unavailable on Saturday, September 12, 2026. We invite you to visit our Wilton location for your urgent orthopedic needs.

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Online Scheduling is Now Available for ONS Danbury! Just click the Online Scheduling button to schedule, view, and reschedule your appointments online. | After-Hours Urgent Ortho Care is available in Wilton & Greenwich, 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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Paul Apostolides, MD
  • Neurosurgery
  • Spine

Practicing in:

Greenwich
Frank Aversano, MD
  • Hand and Upper Extremity

Practicing in:

Greenwich, Stamford, and Wilton
Co-Director of the ONS Outpatient Joint Replacement Center
Jonathan L. Berliner, MD
  • Hip and Knee Replacement

Practicing in:

Greenwich and Wilton
David Bomback, MD
  • Spine

Practicing in:

Danbury and Wilton
Matthew B. Cantlon, MD
  • Hand and Upper Extremity

Practicing in:

Greenwich and Stamford
Eliana Cardozo, DO
  • Physiatry
  • Spine
  • Sports Medicine

Practicing in:

Greenwich, Stamford, and Wilton
Co-Director, ONS Outpatient Joint Replacement Center; Director of Joint Replacement, GH
Kevin J. Choo, MD
  • Hip and Knee Replacement

Practicing in:

Greenwich, Harrison, and Stamford
Michael R. Clain, MD
  • Foot and Ankle

Practicing in:

Greenwich
Demetris Delos, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich and Stamford
Amory J. Fiore, MD
  • Neurosurgery
  • Spine

Practicing in:

Greenwich
Megan M. Gleason, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich, Stamford, and Wilton
Director, ONS Sports Concussion Center
Benjamin Greene, MD
  • Primary Care Sports Medicine
  • Sports Medicine

Practicing in:

Greenwich and Harrison
Tim Greene, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich and Stamford
Jeffrey Heftler, MD
  • Physiatry
  • Spine
  • Sports Medicine

Practicing in:

Greenwich
Medical Director, Orthopedic Trauma, Greenwich Hospital
Michael B. Held, MD, MBA
  • Hip and Knee Replacement

Practicing in:

Wilton, Greenwich, and Stamford
Charles Kent, DO
  • Physiatry
  • Spine

Practicing in:

Wilton, Danbury, and Stamford
Director of Ultrasound
Tamar Kessel, MD
  • Physiatry
  • Spine
  • Sports Medicine

Practicing in:

Greenwich
Marc S. Kowalsky, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich, Stamford, and Harrison
David L. Kramer, MD
Melissa LaRusso, DO
  • Rheumatology

Practicing in:

Greenwich and Stamford
Alex Levchenko, DO
  • Physiatry
  • Spine
  • Sports Medicine

Practicing in:

Wilton, Harrison, and Greenwich
Gerard Marciano, MD
  • Foot and Ankle

Practicing in:

Wilton, Danbury, Greenwich, and Harrison
Robert Merrill, MD
  • Spine

Practicing in:

Danbury, Wilton, and Stamford
Seth R. Miller, MD
Marc Otten, MD
  • Neurosurgery
  • Spine

Practicing in:

Greenwich, Harrison, and Stamford
Andrew Pao, MD
  • Foot and Ankle

Practicing in:

Greenwich, Stamford, Harrison, and Wilton
Jordan B. Pasternack, MD
  • Foot and Ankle

Practicing in:

Greenwich, Wilton, and Harrison
Christopher S. Sahler, MD
  • Physiatry
  • Spine
  • Sports Medicine

Practicing in:

Stamford
Paul M. Sethi, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich and Harrison
Scott L. Simon, MD
  • Neurosurgery
  • Spine

Practicing in:

Stamford
Gary Solomon, MD
Paul M. Tomaszewski, MD, MS
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich, Wilton, Stamford, and Danbury
Chief Medical Officer & Director of the ONS Women's Sports Medicine Center
Katie B. Vadasdi, MD
  • Sports Medicine
  • Shoulder

Practicing in:

Greenwich and Stamford
Mark A. Vitale, MD, MPH
  • Hand and Upper Extremity

Practicing in:

Greenwich and Stamford
Chief Clinical Informatics Officer
David Wei, MD, MS
  • Hand and Upper Extremity

Practicing in:

Greenwich and Harrison
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