
A specialty clinic for
Concussion & vestibular Rehabilitation
Our brain & body collaborate on an elaborate system of
sensory-reaction for our stability-agility.
Our mission
Our mission is to evaluate, prioritize, integrate & optimize this system in the setting of post-concussion, vestibular or orthopedic injury.
Who we are
A concierge mobile vestibular & orthopedic physical therapy clinic
Personalized consultation
Complete and relevant concussion, vestibular and/or orthopedic examination
Customized, goal-oriented treatment interventions
Comprehensive recovery plan
Our Services
Alexandra Diomis, DPT
Certified Vestibular Rehabilitation Specialist
Alexandra Diomis is a highly experienced Doctor of Physical Therapy with 15 years of dedicated service at New York Presbyterian Hospital. A proud graduate of Columbia University's Program in Physical Therapy (Class of 2010), Alexandra has cultivated a deep understanding of movement and rehabilitation. Since 2015, she has specialized as a vestibular therapist, helping patients overcome post-concussion syndrome, dizziness, balance disorders, and related orthopedic issues.
Beyond her clinical practice, Alexandra is actively involved in the academic and research communities. She has served as a clinical liaison for a mechanical engineering PhD candidate, contributing her expertise to research on gait changes with visual, vestibular or head/neck perturbations. Additionally, she shares her passion and knowledge as a lab assistant and guest lecturer for Columbia University's Doctor of Physical Therapy program students.
A resident of Bergen County, Alexandra is also a busy mom to two active children, bringing a personal understanding of the importance of staying active.
Tiffany Mercedes, DPT, OCS
Orthopedic Clinical Specialist & Certified Vestibular Rehabilitation Specialist
Tiffany Mercedes is a board-certified orthopedic clinical specialist and Doctor of Physical Therapy with advanced certification in vestibular rehabilitation. Since earning her DPT in 2009, she has specialized in treating vestibular disorders, concussion injuries, orthopedic conditions, and sports-related injuries.
Tiffany has spent over a decade at New York Presbyterian in NYC, where she plays a key role in expanding the hospital’s vestibular rehabilitation program. She mentors doctoral students and orthopedic residents from Columbia University and contributes to the teaching of Columbia’s vestibular elective course.
With a strong clinical background and a passion for individualized care, Tiffany is dedicated to creating one-on-one treatment plans tailored to each patient’s unique goals and needs. As a mother of three children who compete in youth sports, she brings both clinical expertise and a personal understanding of the active lifestyle to her work.

Contact us
Interested in working together? Fill out some info and we will be in touch shortly. We can’t wait to hear from you!