Marc S. Kowalsky, MD

Testimonials

  • Dr. Kowalsky is not only a terrific surgeon, he is a very thorough doctor who takes time to explain the procedure in detail until the patient is both knowledgeable and comfortable. I highly recommend Dr. Marc Kowalsky. You won’t be disappointed! (5 Star Review on Healthgrades from F.C., Old Greenwich, CT September, 2019)


  • After receiving no relief from a major NYC Ortho hospital for a severe case of tennis elbow, I found Dr. Kowalsky. He assured me that even at my age, 66, there was no reason that my tennis days had to be behind me. He performed surgery flawlessly, and I was back on the tennis court in 3 months, playing some of the best tennis I have played in years. I will be eternally grateful to him for not putting me out to pasture and I will continue to recommend him to others. He is kind, caring and an excellent surgeon. Simply the best! (5 Star Review on Healthgrades from K.K.)


  • This is a follow-up to my 5-star review of Dr. Kowalsky (dated 12/13/18), shortly after I completed P/T and had my last visit with the doctor. I had suffered a very serious shoulder injury while bicycling late May 2018. Dr. Kowalsky performed a complex surgery mid-June to repair my shoulder, which had several tears of the rotator cuff and biceps. I am now back on my bicycle, and doing the somewhat challenging rides that I had been doing prior to my accident, although perhaps a bit more carefully. My shoulder feels great, is working great, and I can’t speak highly enough of Dr. Kowalsky’s surgical skills and wonderful bedside manner. I would highly recommend him to anyone with a shoulder injury. (5 Star Review on Healthgrades from B.Z.)

  • Dr. Marc Kowalsky is simply the best. I’m 56 yrs old and have multiple sclerosis, as a result my balance is affected & well, I’m always falling and breaking or injuring something! I fell and tore my ACL at the end of 2018. I feel that from the very beginning I’ve received excellent care. Surgery ended up being the best option for me, everything went smoothly and every effort was made to ensure a successful outcome. I had the best post op instructions and follow up care I’ve ever had & ONS Physical Therapy was brilliant. I feel very fortunate to have been under his care and have made a full recovery. My knee feels awesome! I’m very grateful to Dr. Kowalsky, his team and my PT Bethany Deer for all of their help and most of all for truly caring about my recovery. THANK YOU!! (5 Star Review on Healthgrades)


  • Dr. Marc Kowalsky is an incredibly kind and caring doctor that took the time to explain every step of my very complicated knee surgery and was extremely diligent in attending to my growing concerns as a patient. Not only did he fix my knee physically but he basically turned my way of life around mentally. I would highly recommend him to anyone !!! I cannot speak highly enough about him and his practice! (5 Star Review on Healthgades)


  • I saw Dr. Kowalsky for an ACL reconstruction – he was patient and kind and took the time to answer any/all of my questions. Surgery went extremely well and I have full range of motion back in my knee. (5 Star Review on Healthgrades from a patient in CT)

  • Dr Kowalsky and the entire staff at ONS are professional, incredibly knowledgeable about their individual crafts and really cared about getting my knee/quad and leg back to normal so I can resume my daily activities. Dr Kowalsky, despite being very busy took the time to respond to a question via e-mail and I can’t name another Dr who would take the time to do so! Additionally ONS is “one stop shopping” from setting up appts, MRI, surgery and PT all under one roof! Their PT staff is exceptional! (5 Star Review on Healthgrades from C.W. in Larchmont, NY)


  • I had a very serious shoulder injury. Dr. Kowalsky clearly and completely explained the extent of the injury and the surgery needed to repair my shoulder. He also accurately predicted the recovery time and effort needed. Dr. Kowalsky always took as much time as was needed to thoroughly answer every one of my questions. I would definitely recommend him to anyone who has experienced a shoulder injury. (5 Star Review on Healthgrades)

  • Dr. Kowalsky operated on my shoulder for rotator cuff repair a year ago. Excellent result with full range of motion. He is a great surgeon with skills!! Also, very personable and professional. Many people had given me horror stories about their similar surgery and were advising against it. So glad I didn’t listen. I’m about to start playing tennis again which could not have happened without the results I have. Thank you Dr. Kowalsky! (5 star Review from E.B. in Stamford)

  • Dr. Kowalsky did an amazing job on my surgery. My arm is fully back to normal. I never had to wait for my appointments. He has a very good bedside manner. I would strongly recommend him for surgery. (5 Star Review on Healthgrades by S.)


  • After a sport related knee injury (ACL, meniscus & tiny fracture), I found Dr. Kowalsky in my research. He exceeded my expectations and namely these things standout: very approachable, professionally informative and honest. He thoroughly explained all possible options with his expert opinion, addressed my questions about specifics of the procedure. After surgery, he followed up with rehab making sure I was right on schedule for full recovery. Excellent, professional and relatable care overall! (5 Star review on Healthgrades)


  • Dr. Kowalski besides being very caring, professional and friendly did an amazing job putting our son’s broken humerus bone back together. The follow-up xrays revealed an amazing progress and almost seamless recovery. We are very grateful to Dr. Kowalski and his staff for taking such great care of our young athlete and enabling him to get back to skiing, training and competing in record time! (5 Star Review on Healthgrades from a patient in Darien, CT)


  • Dr. Kowalsky is the absolute best! Following a serious sport related injury (elbow), I was treated with the utmost professionalism and personal care. He talked me through every step of my recovery, checked in with me, was there when I had questions/worries about being able to return to full activities sports, etc. A year later, I needed emergency surgery (meniscus repair) which he did too. He took such amazing care of me! His level of expertise and personal involvement is unparalleled! (5 Star Review on Healthgrades from S.D. in Greenwich, CT)


  • Dr. Kowalsky – I had my left meniscus repaired by you in October 2016 and my right meniscus repaired in April 2017. My desire was to get back into marathon running. I completed my 15th marathon on Sunday, January 7th at Walt Disney World thanks to you and your staff’s expertise and assistance. I can’t tell you how much I appreciate the ability to be back running. Again, thank you. (D.N., Greenwich, CT)


  • So much praise for Dr. K so I hope this will sum up who he is as a physician, surgeon & man. He knew I was pressed for time to get my meniscus repaired so he scheduled me first thing in the morning (also my preference). As I was leaving after recovery, I met him in the parking garage. He came in early to operate on me alone and then went on with the rest of his day! Who does that but a kind, compassionate, considerate human! Also, I came home with pics which he explained later. I’m eternally grateful! (5 star review on Healthgrades from J.C. in New York)


  • I had ACL surgery with Dr. Kowalsky and it went better than I would have hoped! I’m currently 5 months out of surgery and feel great. Thanks to Dr. Kowalsky and team for making me feel comfortable as well as answering all my questions along the way. (5 star review on Healthgrades)


  • Dr. Kowalsky performed ACL reconstruction on my knee and I couldn’t be more thrilled with the result! He’s an excellent surgeon, but also has superb bedside manager and is willing to spend whatever time is necessary for his patients to feel informed and cared for. He managed my expectations all through the process, from surgery through physical therapy. I’m cleared for skiing again and couldn’t be happier. (5 star review on Healthgrades from K. in Norwalk, CT)


  • Dr. Kowalsky repaired my non union clavicle. I had a graft and 2 plates. I now have full range of motion on my shoulder. Dr. Kowalsky is a skilled surgeon and has a great bed side manner. He spends time with you and explains procedures every step of the way. I could not have asked for a better surgeon and doctor. (Five star review on Healthgrades from a patient in Weston, CT)


  • I had a complete tear in one of my rotator cuff tendons. I had gotten 2 opinions, one locally and the other in NYC. I had heard of very positive results at ONS through a relative and scheduled an appointment with Dr Kowalsky. It was an instant fit, I was ready to make my decision. Dr Kowalsky took time to go over my MRI and my injury in detail and also his surgical procedure to repair it. The recovery process was also explained so I knew what to expect. Great results and great doctor! (Five star review on Healthgrades from A. in Easton, CT)

     


  • Dr. Kowalsky performed ACL reconstruction on my knee and I couldn’t be more thrilled with the result! He’s an excellent surgeon, but also has superb bedside manager and is willing to spend whatever time is necessary for his patients to feel informed and cared for. He managed my expectations all through the process, from surgery through physical therapy. I’m cleared for skiing again and couldn’t be happier. (Five star review on Healthgrades from Karen in Norwalk, CT)


  • Dr. Kowalsky took EXCELLENT care of my 12 year old son who needed shoulder surgery. He is an outstanding doctor from beginning to end. (5 Star review on Healthgrades by patient’s parent from Harrison, NY.)


  • Thanks to Dr. Kowalsky, my knee surgery was very easy. I had no pain and the recovery time was unexpectedly quick and easy! I did not have to take any painkillers. He really knows what he’s doing! Thank you Dr. Kowalsky! (comment from Health Grades)


  • I was so pleased with Dr. Kowalsky‘s professionalism. He was very thorough and spoke to me in “real talk” so that I understood what was going on with my shoulder. I also liked the fact that he told me if I had any questions or problems to feel free and call the office. I called him about a medication I was taking and his nurse got right back to me. I highly recommend Dr. Kowalsky. (comment from Health Grades)


  • I had a serious knee accident with 3 detached quad muscles at the age of 68. Dr. Kowalsky performed a surgical procedure to reattach them all. I’m able to ski and bike again! Recovery takes time but I’m very happy with the results. Thanks so much! (comment from Health Grades)


  • Thanks to Dr. Kowalsky my surgery went extremely well. I am mystified at how I am recovering faster than I had expected. (Patient Survey)


  • Dr. Kowalsky took the time to hear me explain the progression of my symptoms. He gave me a thorough exam, asked all of the right questions and gave a very logical diagnosis and treatment plan. I am very pleased. (Patient Survey)


  • Dr. Kowalsky and his staff were very accommodating and professional. (Patient Review)


  • Dr. Kowalsky is one of the best and most caring physicians you’ll ever find. It is a blessing to be his patient. Thank you! (Patient Survey)


  • As always, I was beyond happy with my ONS experience. My expectations for the treatment of my son were exceeded. This was our first time meeting Dr. Kowalsky and he was absolutely great! We were so well taken care of. Thank you! (Patient Survey)


  • Dr. Kowalsky has really done an excellent job for me. (Patient Survey)


  • Dr. Kowalsky:  It’s almost a year since I met you in Greenwich Hospital. I want to thank you for the wonderful care and kind bedside manner you showed me over the past year.  I’m so grateful you were the doctor on call that day. I don’t know how I would have gotten this far without your gentle manner.. I have the utmost respect for you.  Sincerely, S.M.


  • Dr. Kowalsky was kind and understanding of my desire to “get back” to rowing and dance. He took time to ask questions to understand my commitments to my teams and how important my attendance was at upcoming events. I appreciated his empathy and straight-forward options. He was a nice person too. – (Patient satisfaction survey)


  • It is always a great experience coming to see one the doctors here. The professionalism and great customer service keeps me coming back even though it is an hour drive for me! (Anonymous online patient satisfaction survey)