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Meet The Surgeon

Dr. Kowalsky is a board certified orthopedic surgeon specializing in Shoulder, Elbow & Sports Medicine

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 / Nicholas Institute for Sports Medicine & Athletic Research, and in Shoulder & Elbow Surgery at Washington University School of Medicine.

About Dr. Kowalsky
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Awards
Top Doctors
Top Doctor - Award
Top Doctor
2022 - Present
Top Doctor - Award 2
Top Doctor
2022 - Present
Top Doctor - Award 3
Top Doctor
2022 - Present
Top Doctor - Award 4
Top Doctor
2022 - Present
Team
Affiliations
USA Rugby - Team
USA Rugby
White Plains Rugby Club - Team
White Plains Rugby Club
Fairfield University Rugby Club - Team
Fairfield University Rugby Club
Eastern FC - Team
Eastern FC
Ardsley High School - Team
Ardsley High School
Latest Articles
News & Blog
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  • How Knee Surgery Helped Elizabeth Return to the Outdoors

    Elizabeth describes herself as an outdoor junkie, eager to tackle activities like trail running, rock climbing, horseback riding, alpine touring, competitive sailing, and more. According to Elizabeth, the outdoors are where she finds peace...

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  • What to Know about Shoulder Replacements

    Shoulder arthritis and severe rotator cuff damage can lead to chronic pain and limited mobility. In this Q&A, ONS sports medicine and shoulder surgeon Dr. Marc Kowalsky discusses how modern shoulder replacement techniques...

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  • Key Takeaways from Dr. Kowalsky’s 2024 USA Rugby Tour Experience

    I have served as a team physician for USA Rugby since 2013, traveling once or twice a year with the team during their tours domestically and internationally for test match competition. I view each tour as an opportunity to learn about...

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  • Dr. Kowalsky was the best surgeon and doctor I have had the fortune of being with. He is intelligent, caring, ...

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  • I visited Dr. Kowalsky at ONS after receiving terrible care and undergoing a poorly performed surgery with ano...

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  • Dr. Kowalsky not only changed his schedule to be able to complete my surgery, but made the entire process as s...

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  • Dr. Kowalsky is a phenomenal physician! He repaired my rotator cuff in 2019 and it is still in great shape! I ...

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  • From our very first visit to our final follow up, Dr. Kowalsky cared for my daughter with care, concern and de...

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    ~ T W ~

  • Dr. Kowalsky is an outstanding surgeon. Skillful and knowledgeable. He fixed a complex, unusual large tear in ...

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    ~ E R ~

  • Dr. Kowalsky repaired my shoulder after a catastrophic injury requiring the latest of techniques and devices.

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    ~ M M ~

  • This is an amazingly professional, attentive, knowledgeable doctor. Before the first surgery of my life I was ...

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    ~ D S ~

  • I was referred to ONS after separating my rotator cuff / deltoid tendons from a cycling wipeout on a 30mph dow...

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    ~ T C ~

  • Dr.Kowalsky repaired my destroyed humerus and shoulder! I needed a plate and screws in a 4 part procedure and ...

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    ~ V G ~

Featured Videos
In the Media
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  • In the Media - Video
  • In the Media - Video 2
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