Man on bench with cane
Multi generational family on walk
Older couple gardening

Welcome to Vortex Physical Therapy & Balance


Vortex Physical Therapy & Balance specializes in physical therapy for vestibular and neurological disorders, as well as balance issues.

Our clinic was founded in 2011 by Diron Cassidy, PT, MPT, GCS as the first facility in Silicon Valley dedicated to the rehabilitation of vestibular disorders and balance problems. Our specialized physical therapists work one-on-one with clients to reduce dizziness and improve their balance. Using the latest techniques and evidence-based practices, along with state-of-the-art equipment, we can help you recover and return to the activities of daily life.

We regularly treat the following conditions:

  • Acoustic neuroma
  • BPPV / Vertigo
  • Cervicogenic dizziness
  • Concussion / mild traumatic brain injury (mTBI)
  • Disequilibrium and gait abnormalities
  • Labyrinthitis / Vestibular neuritis
  • Meniere’s disease
  • Parkinson’s disease
  • Persistent postural perceptual dizziness (3PD)
  • Peripheral neuropathy
  • Stroke
  • Vestibular hypofunction (bilateral / unilateral)
  • Vestibular migraine

No Doctor Referral Needed

Did you know? It’s California Law: You have direct access to a physical therapist. There are a number of benefits that come from Direct Access. Read more >>


Don’t struggle with dizziness or balance issues while sheltering in place!

Our physical therapists are available for live telehealth video appointments from the safety of home. (In-person appointments available on an as-needed basis.)

Medicare now covers telehealth for physical therapy, along with most PPOs. For details, click here or call us at 408-540-7622.