Urgent Ortho Care in Wilton will be closed on Saturday, July 13th. We invite you to visit our Greenwich location, which will be open for Urgent Ortho Care from 12 p.m. to 4 p.m.

Marc S. Kowalsky, MD

Specialties
Sports Medicine
Located In

Greenwich, Stamford, Harrison

About

Dr. Kowalsky currently sees patients in the ONS offices in Greenwich, Harrison, and Stamford.

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. He serves on the Executive Committee of the American Clinical Elbow and Shoulder Surgeons, and is an active member of The American Shoulder and Elbow Surgeons, a society made up of the leading national and international shoulder and elbow surgeons.

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.

Aetna
  • Commercial Plans (Including APCN Plus, We do not accept regular APCN)
  • Managed Medicare
Anthem Blue Cross Blue Shield of CT
  • Commercial and Exchange
  • Managed Medicare
Blue Cross Blue Shield (Plans Outside CT)
  • Cards with the “PPO” inside the suitcase logo
CarePartners of Connecticut
  • Managed Medicare (HMO/PPO)
Cigna
  • Commercial, MetroNY, and LocalPlus
  • Cigna+Oscar, Cigna+MVP (CT Locations Only)
ConnectiCare
  • Commercial and Exchange (Except “Value” Network)
  • Managed Medicare
Connecticut Medicaid
Connecticut State Workers’ Compensation
EmblemHealth
  • Emblem Commercial and Exchange (Except for Millennium and Enhanced Care Prime Networks)
  • Managed Medicare (VIP Prime, Bold, Reserve)
Harvard Pilgrim
  • Through United Shared Services – ONS Harrison location only.
Medicare (Including Railroad Medicare)
New York State Workers’ Compensation
Oxford
  • Liberty and Freedom Plans
UHC/NYSHIP/NY Government Empire Plan
United Healthcare
  • All Commercial Plans (Except Indemnity and Compass)
  • Managed Medicare

Orthopaedic & Neurosurgery Specialists (ONS) accepts most major insurance plans. Please see the list of accepted insurance plans above and confirm that ONS participates with your plan prior to scheduling an appointment. Certain insurance plans are limited to specific regions and physicians. If you have additional questions, please call our offices at (203) 869-1145 ext. 279 and our team will be happy to provide additional information.

Fellowship

Fellowship in Sports Medicine: Lenox Hill Hospital/Nicholas Institute of Sports Medicine & Athletic Trauma, New York, NY

Fellowship in Shoulder & Elbow Surgery: Washington University School of Medicine, Saint Louis, MO

Medical School

MD/MBA in Health Management: Tufts University School of Medicine, Boston, MA

Residency

Residency in Orthopaedic Surgery: Columbia University Medical Center/New York Orthopaedic Hospital, New York, NY

College

Dartmouth College, Hanover, NH

  • American Board of Orthopaedic Surgery: Orthopaedic Surgery Board Certification
  • American Board of Orthopaedic Surgery: Orthopaedic Sports Medicine Subspecialty Certification

Memberships
  • American Academy of Orthopaedic Surgeons, Fellow
  • American Board of Orthopaedic Surgery, Diplomate
  • American Orthopaedic Society for Sports Medicine
  • The American Shoulder and Elbow Surgeons, Active Member
    Association of Clinical Elbow and Shoulder Surgeons
  • Arthroscopy Association of North America
  • Connecticut Orthopaedic Society, Board of Directors
Team Physician Responsibilities
  • Connecticut Whale, Team Physician
  • Eastern FC Football Club, Medical Director
  • Greenwich High School Rugby Team, Team Physician
  • Iona College Rugby Football Club, Team Physician
  • Northeast Academy, Medical Director
  • USA Rugby National Team, Team Physician
  • White Plains Rugby Football Club, Team Physician

  • Castle Connolly Top Doctor, 2022-Present
  • Castle Connolly Top Doctor in NY Metro Area, 2022-Present
  • Greenwich Magazine Top Doctor in Fairfield County, 2022-Present
  • New Canaan/Darien Magazine Top Doctor in Fairfield County, 2022-Present
  • Stamford Magazine Top Doctor in Fairfield County, 2022-Present
  • Westport Magazine Top Doctor in Fairfield County, 2022-Present
  • New York Super Doctors, 2015–2021
  • New York Super Doctors Rising Stars, 2013–2014
  • Vitals.com Patient Choice Award
  • Vitals.com Compassionate Doctor Recognition
  • Best Fellow Research Presentation Award, Lenox Hill Hospital Department of Orthopaedic Surgery
  • Alexander Garcia, MD Senior Resident Award, New York Orthopaedic Hospital
  • Rosamond Kane, MD Pediatric Resident Award, New York Orthopaedic Hospital

Published Research
  • Kowalsky, MS. “SLAP Tears and Lesions of the Biceps Tendon.” In AAOS Comprehensive Orthopaedic Review, 3rd Ed. Martin I. Boyer, MD, ed. Chicago: American Academy of Orthopaedic Surgeons, Rosemont, IL. 2019.
  • Brameier DT, Hirscht A, Kowalsky MS, Sethi PM. “Rehabilitation Strategies After Shoulder Arthroplasty in Young and Active Patients”. Clin Sports Med. 37(4): 569-583. 2018 Oct.
  • Davis DE, Maltenfort M, Abboud JA, Getz C, Rothman Institute Shoulder Consortium Group, Association of Clinical Elbow and Shoulder Surgeons. “Classifying glenohumeral synovitis: a novel intraoperative scoring system”. JSES. 26(11): 2047-2053, 2017 Nov.
  • Conroy C, Sethi P, Macken C, Wei D, Kowalsky MS, Mirzayan R, Pauzenberger L, Dyrna F, Obopilwe E, Mazzocca AD. “Augmentation of a Distal Biceps Repair with an Acellular Dermal Graft Restores Native Biomechanical Properties in a Tendon Deficient Model”. AJSM. 45(9): 2028-2033, 2017 Jul.
  • Porter DA, Birns M, Hobart SJ, Kowalsky MS, Galano GJ. “Arthroscopic Treatment of Osseous Instability of the Shoulder”. HSS Journal. 13: 292-301, 2017 May.
  • Kowalsky, MS. “Minimally Invasive Treatment of Elbow Articular Cartilage Injury”. In Minimally Invasive Surgery in Orthopedics, 2nd Ed. Scuderi GR, Tria AJ, ed. Springer, New York. 2016.
  • Minimally Invasive Surgery in Orthopedics, 2nd Ed. Scuderi GR, Tria AJ, editors. Kowalsky, MS, Elbow Section editor. Springer, New York. 2016
  • Ponzio DY, VanBeek C, Wong JC, Padegimas EM, Anakwenze OA, Getz CL, Abboud JA, ACESS Group. “Profile of Current Opinion on Arthroscopic Acromioplasty: A Video Survey Study”. Arthroscopy. 32(7): 1253-62, 2016 Jul.
  • Kowalsky MS, Zuckerman JD. “Chronic Glenohumeral Dislocation: Anterior and Posterior”. In Clinical Decision Support: Shoulder and Elbow. Zuckerman JD, Oh L, Strauss E, ed. Decision Support in Medicine, LLC, Wilmington, DE. 2015.
  • Kowalsky, MS. “Minimally Invasive Treatment of Elbow Articular Cartilage Injury”. In: Minimally Invasive Surgery in Orthopedics, 2nd Ed. Scuderi GR, Tria AJ, editors. New York: Springer, New York; 2016: 1-16.
  • Kowalsky, MS. “SLAP Tears and Lesions of the Biceps Tendon”. In AAOS Comprehensive Orthopaedic Review, 2nd Ed. Boyer, MI, ed. American Academy of Orthopaedic Surgeons, Rosemont, IL. 2014
  • Kowalsky MS, Galatz LM, Shia DS, Steger-May K, Keener JD. “The relationship between scapular notching and reverse shoulder arthroplasty prosthesis design”. JSES. 21(10): 1430-41, 2012 Oct.
  • Kowalsky MS, Galatz LM. “Arthroscopic Repair of Massive Rotator Cuff Tears”. In Operative Techniques: Shoulder & Elbow, Neviaser RJ et al., ed. Elsevier, Philadelphia, 2011.
  • Kowalsky MS, Keener JD. “Revision Arthroscopic Rotator Cuff Repair: Repair Integrity and Clinical Outcome. Surgical Technique”. JBJS (Am). 93(supplement 1): 62-74, 2011 Mar.
  • Kowalsky, MS. Kremenic IJ, Orishimo KF, McHugh MP, Nicholas SJ, Lee SJ. “Effect of distal clavicle excision on in situ graft forces in CC ligament reconstruction”. Am J Sports Med. 38(11): 2313-19, 2010 Nov.
  • Kowalsky MS, Levine WN. “Traumatic posterior glenohumeral dislocation: Classification, pathoanatomy, diagnosis, and treatment”. Orthop Clin North Am. 39(4): 519-33, 2008 Oct.
  • Kowalsky MS, Dellenbaugh SG, Erlichman DB, Gardner TR, Levine WN, Ahmad CS. “Evaluation of suture abrasion against rotator cuff tendon and proximal humerus bone”. J Arthroscopy. 24(3): 329-34, 2008 Mar.
  • Kowalsky MS, Bell John-Erik, Ahmad CS. “Arthroscopic Treatment of Subcoracoid Impingement Caused by Lesser Tuberosity Malunion: A Case Report and Review of the Literature”. J Shoulder Elbow Surg. 16(6): e10-4, 2007 Nov-Dec.
Poster Presentations
  • Kowalsky MS, Dellenbaugh SG, Erlichman DB, Gardner TR, Levine WN, Ahmad CS. “Evaluation of Suture Abrasion Against Rotator Cuff Tendon Using a Cyclic Loading Model”. 2007 OREF Annual New York Resident Research Symposium, New York Presbyterian Hospital. New York, NY. May 25, 2007.
  • Kowalsky MS, Leno M, Robert-Guroff M. “Cell-mediated and Humoral Immune Responses in Vaccinated Chimpanzees Challenged with HIV-1”. Summer Research Program Poster Day, NIH. Bethesda, MD. August 6, 1998.
Podium Presentations
  • Kowalsky, MS. “Is Opioid-Free Surgery Possible?”. 10th Annual ONS Foundation Medical Education Conference, ONS Foundation for Clinical Research and Education. Greenwich, CT. November 10, 2018.
  • Kowalsky, MS. “Emerging Technology in Shoulder Arthroplasty”. 9th Annual ONS Foundation Medical Education Conference, ONS Foundation for Clinical Research and Education. Greenwich, CT. November 18, 2017.
  • Kowalsky, MS. “Rotator Cuff Tears in the Overhead Athlete”. 7th Annual ONS Foundation Medical Education Conference, ONS Foundation for Clinical Research and Education. Greenwich, CT. November 7, 2015.
  • Kowalsky, MS. “Elbow Injuries in the Throwing Athlete”. Grand Rounds, Roosevelt Hospital CV Starr Hand Surgery Center. New York, NY. March 3, 2015.
  • Kowalsky, MS. “Shoulder Injuries in the Overhead Athlete”. 3rd Annual Orthopaedic Surgery Symposium, New York Hospital Queens Department of Orthopaedic Surgery. Queens, New York. October 4, 2013.
  • Kowalsky, MS. “Acromioclavicular Joint Resection / Reconstruction”. New Technologies in Shoulder and Elbow Surgery 2013: Arthroscopy to Arthroplasty, Yale Department of Orthopaedics and Rehabilitation Shoulder and Elbow Service. New Haven, CT. August 16, 2013.
  • Kowalsky, MS. “Traumatic Anterior Glenohumeral Dislocation: Pathoanatomy and Evidence-based Management”. Grand Rounds, Roosevelt Hospital CV Starr Hand Surgery Center. New York, NY. April 2, 2013.
  • Kowalsky, MS. “Acromioclavicular Separation: Injury and Surgical Intervention”. Grand Rounds, Roosevelt Hospital CV Starr Hand Surgery Center. New York, NY. April 17, 2012.
  • Kowalsky, MS. “Acromioclavicular Joint Separation: Evidence-based diagnosis & management”. Rehabilitation Lecture Series, North Shore-LIJ Rehabilitation Network. Syosset, NY. July 27, 2011.
  • Kowalsky MS, Galatz LM, Shia DS, Steger-May K, Keener JD. “The relationship between scapular notching and reverse shoulder arthroplasty prosthesis design”. AAOS 2011 Annual Meeting. San Diego, CA. February 16, 2011.
  • Kowalsky MS. “Reverse shoulder arthroplasty for proximal humerus fractures”. Grand Rounds, New York Hospital Queens Department of Orthopaedic Surgery. Queens, New York. September 29, 2010.
  • Kowalsky MS. Kremenic IJ, Orishimo KF, McHugh MP, Nicholas SJ, Lee SJ. “Effect of distal clavicle excision on in situ graft forces in CC ligament reconstruction”. AOSSM 2010 Annual Meeting. Providence, Rhode Island. July 17, 2010.
  • Kowalsky MS. “Effect of distal clavicle excision on in situ graft forces in CC ligament reconstruction”. Annual Alumni Meeting, Lenox Hill Hospital Department of Orthopaedic Surgery. June 8, 2009.
  • Kowalsky MS. “Effect of distal clavicle excision on in situ graft forces in CC ligament reconstruction”. West Point Sports Medicine Fellowship Day, United States Military Academy. June 4, 2009.
  • Kowalsky MS. “Evaluation of suture abrasion against rotator cuff tendon and proximal humerus bone”. Residency Graduation, Columbia University Department of Orthopaedic Surgery. June 19, 2008.
  • Kowalsky MS, Chung W, Gonzalez-Lomas G, Su BW. “Locked Plating: Biomechanics and Clinical Applications”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. June 22, 2005.
  • Kowalsky MS, Hwang M, Lobo M. “Dysfunction of the Posterior Tibial Tendon”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. April 21, 2005.
  • Kowalsky MS. “Musculoskeletal Tumors: Giant Cell Tumor of Bone”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. February 3, 2005.
  • Kowalsky MS, Moore D, Lobo M. “Pathology of the Achilles Tendon”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. July 22, 2004. 22, 2005
  • Kowalsky MS, Hwang M, Lobo M. “Dysfunction of the Posterior Tibial Tendon”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. April 21, 2005.
  • Kowalsky MS. “Musculoskeletal Tumors: Giant Cell Tumor of Bone”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. February 3, 2005.
  • Kowalsky MS, Moore D, Lobo M. “Pathology of the Achilles Tendon”. Grand Rounds, Columbia University Department of Orthopaedic Surgery. July 22, 2004.
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