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Dr. Marc Kowalsky, MD

Dr. Marc Kowalsky, MD

Shoulder & Elbow Surgeon
500 Mamaroneck Ave, Harrison, NY
5.00
“Dr. Kowalsky and his team were professional, friendly, and efficient. The service was quick, and they even created and reviewed my reports onsite. Truly an amazing experience I definitely recommend! ”
Karinne O.December 10, 2025
Highly recommended
100% of patients gave this doctor 5 stars
Excellent wait time
100% of patients waited less than 30 minutes
New patient appointments
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Available appointments

Today, Apr 2 – Wed, Apr 15
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What patients are saying

Overall rating

5.00

Average wait time

4.86

Bedside manner

5.00
“Dr. Kowalsky and his team were professional, friendly, and efficient. The service was quick, and they even created and reviewed my reports onsite. Truly an amazing experience I definitely recommend! ”
Karinne O.December 10, 2025

About Dr. Marc Kowalsky

Marc Kowalsky, MD is a board-certified orthopedic surgeon, with subspecialty certification in Sports Medicine by the American Board of Orthopaedic Surgery. He completed two subspecialty fellowships: the first in Sports Medicine at Lenox Hill Hospital/Nicholas Institute of Sports Medicine and Athletic Trauma, and the second in Shoulder & Elbow Surgery at the Washington University School of Medicine. He has expertise in the surgical and nonsurgical management of sports injury of the shoulder, elbow and knee. He treats complex shoulder and elbow conditions, including degenerative disease, trauma, and revision surgery. He has a particular interest in the management of shoulder and elbow arthritis, instability, ligament and tendon injuries, as well as knee ligament injury and cartilage disorders. Dr. Kowalsky has authored original research manuscripts, review articles, and textbook chapters focusing on rotator cuff repair, shoulder replacement, and AC joint reconstruction. He currently serves as a reviewer for the Journal of the American Academy of Orthopaedic Surgeons, Journal of Shoulder and Elbow Surgery and the American Journal of Sports Medicine. Dr. Kowalsky has cared for college and professional athletes at every level of competition. As a sports medicine fellow, he was an assistant team physician for the New York Jets and the New York Islanders. He has provided sports medicine coverage for the Tournament of Champions Squash Tournament and the United States Open Tennis Championship. He currently serves as team physician for the White Plains Rugby Football Club, Iona College Rugby Football Club, and the Greenwich High School Rugby Team. He currently serves as medical director for the Northeast Academy national development rugby program. Dr. Kowalsky is a team physician for the CT Whale of the National Women’s Hockey League, and for the USA Rugby National Team.

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Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Knee joint injury
Fracture/dislocation treatment arm/wrist/hand
Arthritis
Joint injury due to trauma
Fracture/dislocation treatment pelvis/hip/femur
Pain in joint
Knee joint injury
Fracture/dislocation treatment arm/wrist/hand
Arthritis
Joint injury due to trauma

Office locations

ONS - Orthopaedic & Neurosurgery Specialists (1 of 3)
500 Mamaroneck Ave, Harrison, NY 10528
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ONS - Orthopaedic & Neurosurgery Specialists (2 of 3)
6 Greenwich Office Park, Greenwich, CT 06831
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ONS - Orthopaedic & Neurosurgery Specialists (3 of 3)
5 High Ridge Park, 3rd Fl, Stamford, CT 06905
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1 of 3

Education and background

Practice names

Board certifications

  • American Board of Orthopaedic Surgery
  • Orthopaedic Sports Medicine (American Board of Orthopaedic Surgery)

Education and training

  • Medical School - Tufts University, Doctor of Medicine
  • Columbia University Medical Center, New York University Langone Orthopedic Hospital, Residency in Orthopedic Surgery
  • Nicholas Institute of Sports Medicine and Athletic Trauma, Lenox Hill Hospital, Fellowship in Sports Medicine
  • Washington University, St. Louis, Fellowship in Shoulder and Elbow Surgery
  • Dartmouth College (Bachelor's)

Professional memberships

  • American Academy of Orthopaedic Surgeons
  • American Shoulder and Elbow Surgeons
  • Association of Clinical Elbow and Shoulder Surgeons
  • Arthroscopy Association of North America
  • American Orthopaedic Society for Sports Medicine

Awards and publications

  • Castle Connolly Top Doctor
  • Castle Connolly Top Doctor, 2022-Present
  • Castle Connolly Top Doctor in NY Metro Area, 2022-Present

Languages spoken

  • English

Provider's gender

Male

NPI number

1699941823

Patient reviews

All reviews have been submitted by patients after interacting with the practice.
Overall rating
5.00
Wait time
4.86
Bedside manner
5.00
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37 reviews
Most relevant
Dr. Kowalsky and his team were professional, friendly, and efficient. The service was quick, and they even created and reviewed my reports onsite. Truly an amazing experience I definitely recommend!
Verified patient
Great experience.
Verified patient
Verified patient
Verified patient
Frequently asked questions

How soon can I make an appointment with Dr. Marc Kowalsky?

Generally, Dr. Marc Kowalsky has appointments available on Zocdoc within 1 week. You can see Dr. Kowalsky's earliest availability on Zocdoc and make an appointment online.

Is Dr. Marc Kowalsky accepting new patients?

Dr. Marc Kowalsky generally accepts new patients on Zocdoc. You can see Dr. Kowalsky's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Marc Kowalsky accept my insurance?

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Can I make an appointment with Dr. Marc Kowalsky online?

Yes, you can make an appointment online with Dr. Kowalsky using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Marc Kowalsky work with?

Where is Dr. Marc Kowalsky's office located?

Dr. Marc Kowalsky has 3 office locations, including in Greenwich, Harrison, and Stamford, view full addresses on Dr. Kowalsky's profile.

Which board certifications does Dr. Marc Kowalsky have?

Dr. Marc Kowalsky is certified by American Board of Orthopaedic Surgery and Orthopaedic Sports Medicine (American Board of Orthopaedic Surgery).

What are common reasons for patients to see Dr. Marc Kowalsky?

Dr. Marc Kowalsky frequently sees patients for Anterior Cruciate Ligament (ACL) Injury, Knee Pain, Knee Problems, Shoulder Pain, and Shoulder Problem. You can see other visit reasons for Dr. Marc Kowalsky on their profile.

What languages does Dr. Marc Kowalsky speak?

Dr. Marc Kowalsky speaks English.

How do patients rate Dr. Marc Kowalsky in reviews?

36 patients have reviewed Dr. Marc Kowalsky. The overall rating for this doctor is 5/5. They have a 5/5 rating for bedside manner and a 4.83/5 rating for wait time. You can read individual reviews and ratings on their profile.

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        Zocdoc›Shoulder & Elbow Surgeons›Dr. Marc Kowalsky, MD