Concierge · Mobile| Bergen County & NYC
We bring recovery to your door.
Doctors of Physical Therapy, with advanced credentials in vestibular & orthopedic rehabilitation, practicing at the top of our license — one patient at a time, in the setting where your healing lives.
years at NYP/Columbia University
20+
2x
Certified Vestibular Therapists*
*certified by the industry gold standard Vestibular Rehabilitation: A Competency-Based Course, co-sponsored by Emory University, Duke University, and the APTA.
1:1
specialized care
One-Session Value
A single visit can redirect your path - forward.
Patients leave their first session with a working diagnosis, targeted home program, and a clear path forward.
We come to you.
Balance Lab 360 is not your typical brick-and-mortar clinic. We're a concierge practice that brings full vestibular, concussion and orthopedic assessment to your home, office, or training facility — anywhere in Bergen County or New York City.
Alexandra Diomis, DPT
Certified Vestibular Rehabilitation Specialist
Alexandra Diomis is a Doctor of Physical Therapy and a 2010 graduate of Columbia University’s Program in Physical Therapy. She spent 15 years as a physical therapist at NewYork-Presbyterian/Columbia University Irving Medical Center, and since 2015 has specialized in vestibular and concussion rehabilitation, helping patients recover from post-concussion syndrome, dizziness, balance disorders, and related orthopedic conditions. She holds the institutional gold-standard for specialist certification for Vestibular Rehabilitation: A Competency-Based Course, sponsored by Duke University and the American Physical Therapy Association.
Alexandra has also contributed to teaching and research. She served as a clinical liaison to mechanical engineering PhD studies on gait changes with visual, vestibular, and head/neck perturbations at Columbia University. She continues to serve as a lab assistant and guest lecturer for Columbia University Doctor of Physical Therapy students.
A Bergen County resident, Alexandra is a mom of two active children and brings a personal understanding of what it takes to stay 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 Hospital 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.
Specialties
Three areas, one standard of care.
Every evaluation is performed by a Doctor of Physical Therapy with subspecialty training. Findings drive the plan — not insurance templates.
i.
Vestibular rehabilitation
For dizziness, vertigo, imbalance, motion sensitivity, or visual disturbance with movement.
Evaluation
- VOMS — full oculomotor and vestibular screen
- Dix-Hallpike and roll test for BPPV
- Dynamic visual acuity and gaze stability
- Static and dynamic balance, gait analysis
- Cervicogenic contribution screen
Treatment
- Canalith repositioning (Epley, Semont, BBQ roll)
- Gaze stabilization training (VOR×1, VOR×2)
- Habituation and adaptation protocols
- Substitution strategies for hypofunction
- Environmental and visual-load progression
Infrared video goggles are used when fixation suppression is needed to observe subtle nystagmus accurately.
ii.
Concussion recovery
For post-concussion symptoms — headache, fog, exertion intolerance, dizziness, or visual strain.
Evaluation
- Autonomic and exertional symptom mapping like HRV monitoring, Buffalo Concussion Treadmill Test (BCTT)
- VOMS — oculomotor and vestibular dysfunction
- Cervical proprioception and joint position error
- Screen for sports medicine, ENT, neurology, endocrinology referral as indicated
Treatment
- Sub-symptom threshold aerobic exercise
- Active rehabilitation, not prolonged rest
- Vestibular and oculomotor retraining
- Cervical manual therapy and motor control
- Graded return-to-work, school, or sport
A head-mounted laser is used during evaluation when cervical proprioception is suspected as a symptom driver.
iii.
Orthopedic physical therapy
For neck, back, shoulder, hip, knee, and other musculoskeletal pain or post-surgical recovery.
Evaluation
- Movement system and regional impairment exam
- Joint mobility, end-feel, and special tests
- Deep neck flexor endurance, cervical strength
- Validated outcome measures (NDI, LEFS, others)
- Workspace and home setup assessment
Treatment
- Manual therapy — joint and soft tissue mobilization
- Mobilization with movement (Mulligan)
- Motor control and progressive loading
- Cervical and scapular endurance training
- Return-to-activity programming
Orthopedic and cervical findings often intersect with vestibular and concussion presentations — we screen across systems on every visit.
Tests, measures, and interventions are drawn from current peer-reviewed practice in vestibular, concussion, and orthopedic rehabilitation. When findings fall outside our scope — sports medicine, ENT, neurology, neuropsycholgy, endocrinology or imaging — we say so and refer. Book a consultation →
Contact us
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