Accomplished Physician, Mark Yakavonis, MD, Joins ONS

Orthopaedic and Neurosurgery Specialists (ONS) has announced the addition of orthopedic foot and ankle surgeon, Mark Yakavonis, MD, to the highly esteemed ONS team of orthopedic specialists, neurosurgeons, physiatrists and physical therapists.  Dr. Yakavonis will see patients at ONS’ Greenwich office and at its Westchester location at 500 Mamaroneck Avenue in Harrison, NY.

Dr. Yakavonis is a fellowship-trained specialist whose expertise includes foot and ankle sports injuries, fractures, cartilage injuries, neuromuscular disease and arthritis.  He performs minimally invasive and arthroscopic surgical techniques and ankle joint replacement.

Dr. Yakavonis earned his medical degree from the New York Medical College in Valhalla, NY. He completed his residency in orthopedic surgery at Boston University Medical Center, followed by a fellowship in foot and ankle surgery at Harvard-Massachusetts General Hospital, in Boston MA.

While a resident, Dr. Yakavonis received the Resident Research Award for his research into a novel operative technique for reducing ankle syndesmosis (high ankle sprain). He was later awarded a national research grant to continue his research from the Arthroscopy Association of North America.  A published author and frequent lecturer, Dr. Yakavonis was named an Emerging Leader by the American Orthopaedic Association.

“ONS has been dedicated to helping patients maintain active lifestyles for 20 years. By adding Dr. Yakavonis to our prestigious team of orthopedic foot and ankle surgeons, ONS will be able to accommodate the increasing patient demand for an elite level of expertise in lower extremity conditions,” said Seth Miller, MD, president of ONS.

ONS has medical offices and physical therapy centers in Greenwich and Stamford, CT and in Harrison, NY. For more information about Dr. Yakavonis or the comprehensive orthopedic and neurosurgical services provided by the specialists at ONS, please visit our website at

ONS is an advanced multi-specialty orthopedic and neurosurgery practice that has been serving patients throughout Fairfield and Westchester Counties and the New York Metropolitan area.  The 26 ONS physicians provide expertise in the full spectrum of musculoskeletal conditions and injuries, sports medicine, minimally invasive orthopedic, spine and brain surgery, joint replacement and trauma. All ONS physicians are in-network with all major insurances. After-hours, walk-in urgent orthopedic care is available at the ONS Greenwich office. All location offer same day appointments for sudden injury.  For more information, visit, or call (203) 869-1145.