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Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8:30am - 5pm Friday 8am - 5pm

Orthopaedic and Neurosurgery Specialists

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United States
Greenwich, CT
Orthopaedic and Neurosurgery Specialists

ONS is an advanced, multi-specialty orthopedic and neurosurgery practice with locations in Greenwich, Stamford, Wilton, Danbury and Harrison.

With 26 sub-specialty trained physicians in orthopedics, neurosurgery, sports medicine and physical medicine/rehabilitation, ONS in Greenwich and Stamford, CT and in Harrison, NY is the most comprehensive practice of its kind in the region. ONS patients are matched to the physician specialist with the training and expertise to meet their specific needs:

ONS orthopedic surgeons diagnose and treat

the complete spectrum of musculoskeletal conditions from minor strains and stress fractures to degenerative arthritis. Our specialized physicians are leaders in their fields, experienced in the most advanced treatments and surgical procedures. Our Spine Center physicians are skilled in the latest advances for treating simple to complex disorders of the spine including minimally invasive spine surgery. ONS Sports Medicine physicians treat sports-related injuries in student, recreational and professional athletes. Our doctors have served as orthopedic consultants to many professional teams including the New York Mets and Los Angeles Dodgers. With on-site digital X-ray, state-of-the-art MRI in Greenwich and Stamford, interventional physiatry services and physical therapy & rehabilitation center, ONS provides the continuum of care from diagnosis through recovery.

02/07/2025

Are you experiencing pain in your muscles, tendons, or joints? If the usual conservative treatments haven't provided the expected or desired results, you might be an ideal candidate for non-invasive shockwave therapy.

Learn more from Dr. Eliana Cardozo's latest article, https://ow.ly/iW3P50UVFe2

02/06/2025

Our offices will open at 10:00 am on Thursday, February 6, due to inclement weather. Thank you.

02/03/2025

Today, on National Women Physicians Day, we honor the women physicians at ONS who provide expert orthopedic care to our community. Join us in recognizing these exceptional physicians:

Dr. Eliana Cardozo, Sports and Spine Physiatrist
Dr. Megan Gleason, Orthopedic Surgeon and Sports Medicine Specialist
Dr. Tamar Kessel, Interventional Physiatrist
Dr. Melissa LaRusso, Rheumatologist
Dr. Katherine Vadasdi, ONS Sports Medicine Specialist and Director of the ONS Women's Sports Medicine Center

02/01/2025

This February, we celebrate the achievements and contributions of Black Americans in medicine, science, and beyond. Their groundbreaking work continues to inspire and shape the future of healthcare.

At Orthopaedic & Neurosurgery Specialists, we are committed to fostering inclusivity, innovation, and excellence in providing orthopedic care to our diverse community.
Join us in recognizing and celebrating Black history, this month and always.

01/31/2025

UPDATE: This event has been rescheduled to Thursday, 3/20/25 due to inclement weather.

We’re excited to partner with Scarsdale Public Library for an insightful event on Brain Health: Understanding & Enhancing Cognitive Wellness, featuring ONS Neurosurgeon Dr. Marc Otten.

📅 Date: Thursday, February 6, 2025
⏰ Time: 12:00 PM - 1:00 PM
📍 Location: Scarsdale Library

Don't miss this opportunity to ask questions and learn expert strategies to support cognitive function and maintain overall brain health as you age.

Reserve your free spot here: https://ow.ly/mT8W50UQBHl

01/30/2025

We had a fantastic time at the Pickleball Pains: Preventing Injuries on the Court event at the Greenwich YMCA! Dr. Kowalsky shared expert tips on staying injury-free, improving mobility, and keeping players at the top of their game.

A big thank you to everyone who attended and to the Greenwich YMCA for hosting this informative session! If you missed it and want to learn more about how we can help keep you active, visit us at https://ow.ly/pAAk50UQkfb.

01/26/2025

Calling all pickleball players! Join us at the Greenwich YMCA for an informative session on Pickleball Pains: Preventing Injuries on the Court with ONS expert Dr. Kowalsky, sports medicine specialist.

📅 Date: Monday, January 27, 2025
⏰ Time: 12:00 PM
📍 Location: Greenwich YMCA

Learn tips to stay injury-free, proper techniques to keep you playing safely, and effective treatment options if injuries do occur. Whether you’re a seasoned player or just getting started, this event is perfect for you.

Save your spot: https://ow.ly/IQ0a50ULjHr

01/24/2025

Staying injury-free and maintaining an active lifestyle is what we're all about! We’re excited for Dr. Kowalsky's talk this coming Monday on preventing and managing pickleball-related injuries.

Register here: https://ow.ly/IQ0a50ULjHr

Protecting your joints, muscles, and mobility is essential to staying active and injury-free.

Join us this Monday, January 27th, at 12:00 PM in the 1st-floor member lounge for an informative talk led by Dr. Marc Kowalsky of ONS (MOrthopedic & Neurosurgery Specialists). Learn key tips to prevent and manage common pickleball injuries so you feel your best on and off the court.

To sign up and learn more, please visit: greenwichymca.org/events/details/54/Pickleball-Pains-Preventing-Injuries-On-The-Court

01/23/2025

Calling all pickleball players! Join us at the Greenwich YMCA for an informative session on Pickleball Pains: Preventing Injuries on the Court with ONS expert, Dr. Kowalsky, sports medicine specialist.

📅 Date: Monday, January 27, 2025
⏰ Time: 12:00 PM
📍 Location: Greenwich YMCA

Learn tips to stay injury-free, proper techniques to keep you playing safely, and effective treatment options if injuries do occur. Whether you’re a seasoned player or just getting started, this event is perfect for you.

Save your spot: https://ow.ly/IQ0a50ULjHr

01/21/2025

As we return from a day of reflection, remembrance, and celebration of the life of Reverend Dr. Martin Luther King, Jr., we continue our commitment to Dr. King's vision of equality, justice, and peace.

01/15/2025

Orthopaedic & Neurosurgery Specialists (ONS), is proud to announce that 30 of our physicians have been recognized on this year’s Castle Connolly 2025 Top Doctors and Rising Stars list. Castle Connolly Top Doctors represent the top 7% of all US practicing physicians in the country.

Please join us in congratulating our outstanding team! Learn more about the ONS physicians selected for Castle Connolly Top Doctors: https://ow.ly/MY4J50UHhu5

Orthopaedic & Neurosurgery Specialists (ONS) is proud to announce that 30 of our physicians have been recognized on this year’s Castle Connolly 2025 Top Doctors and Rising Stars list. These notable doctors are nominated by their peers and thoroughly validated by Castle Connolly’s research team t...

$Just before Dominique’s New Year’s trip abroad, she faced an unexpected challenge—a fractured foot. With the help of the...$

01/10/2025

Just before Dominique’s New Year’s trip abroad, she faced an unexpected challenge—a fractured foot. With the help of the expert care of Dr. Jordan Pasternack at Orthopaedic and Neurosurgery Specialists Dominique's injury didn't derail her plans or her style! She created her own 'disco' design for her orthopedic boot!

01/07/2025

Do you have trouble fully straightening your fingers? You might be experiencing Dupuytren’s Contracture (also called Dupuytren disease), a condition that affects the hand and limits movement over time.

Join this informative in-person event to learn about:

✅Causes and symptoms
✅Treatment options, both surgical and non-surgical
✅Ways to manage and improve hand mobility

Take the first step toward better hand health. Register today for free! https://ow.ly/5Zt650Uyiie

12/30/2024

Happy New Year! Wishing you and your loved ones a healthy and happy 2025.
All offices will be closed Wednesday, January 1. Please visit our website for additional holiday hours and closures: https://ow.ly/w1lc50Uy66G.

12/20/2024

Wishing you and your loved ones a joyful and healthy holiday season and a happy New Year! Urgent Ortho Care in Greenwich and Wilton will be closed on Tuesday, December 24. All ONS offices will be closed on Wednesday, December 25, and Wednesday, January 1.

For additional holiday hours and closures, please visit: https://ow.ly/BHwS50UuFQl

12/17/2024

When Elizabeth suffered a rock-climbing fall that damaged her knee’s ACL, MCL and meniscus, it took her away from what made her whole: being active outdoors.

Elizabeth turned to Dr. Marc Kowalsky, a sports medicine specialist and knee, shoulder, and elbow surgeon at ONS. Dr. Kowalsky’s surgical expertise and personal attention to Elizabeth’s goals helped her get back to being active.

“I just felt so cared for as a whole person,” Elizabeth said.

Learn more about Elizabeth’s inspiring journey back to the outdoors: https://ow.ly/suGt50Us9T7

12/16/2024

Orthopaedic & Neurosurgery Specialists’ online scheduling tool just got even better! Now, both new and existing patients can:

✅ View upcoming appointments

✅ Reschedule with ease

✅ Cancel appointments effortlessly

Take control of your scheduling today! Visit us at https://www.onsmd.com/

Address

6 Greenwich Office Park, 40 Valley Drive
Greenwich, CT
06831

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8:30am - 5pm
Friday	8am - 5pm

Telephone

+12038691145

Website

http://onsmd.com/

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The ONS Advantage

With 26 sub-specialty trained physicians in orthopedics, neurosurgery, sports medicine and physical medicine/rehabilitation, ONS in Greenwich and Stamford, CT and Harrison, NY is the most comprehensive practice of its kind in the region.

ONS doctors are ranked among the best in the country. Educated at Ivy League and other top universities and other top universities and specialty-trained at top-tier hospitals like HSS, Columbia Presbyterian, The Mayo Clinic and Yale, ONS doctors are hand-picked for their elite level of training and expertise.

ONS patients are matched to the physician specialist with the training and expertise to meet their specific needs: ONS orthopedic surgeons diagnose and treat the complete spectrum of musculoskeletal conditions from minor strains and stress fractures to degenerative arthritis. Our specialized physicians are leaders in their fields, experienced in the most advanced treatments and surgical procedures. Our Spine Center physicians are skilled in the latest advances for treating simple to complex disorders of the spine including minimally invasive spine surgery. ONS Sports Medicine physicians treat sports-related injuries in student, recreational and professional athletes. Our doctors have served as orthopedic consultants to many professional teams including the New York Mets and Los Angeles Dodgers. Our state-of-the-art MRI, interventional physiatry services and physical therapy & rehabilitation centers facilitate a patient’s complete care from diagnosis through recovery.