Ian Purcell MD PhD Otoneurology Call 858 223 2172
Otoneurology · San Diego

Specialist care for vertigo, balance, and complex neurology.

Dr. Ian Purcell, MD PhD, leads a dedicated otoneurology practice for patients with vestibular disorders, migraine, and unexplained dizziness — combining clinical neurology with research-grade diagnostics.

30+
Years in clinical neurology & vestibular research
San Diego Magazine Top Doctor selections through 2025
16
Conditions we treat across vestibular & general neurology
Neurology-focused care
Dr. Purcell, MD PhD · Dr. Patel, MD
San Diego Top Doctor
Recognized through 2025
Research-grade diagnostics
VNG, CDP, EEG & EMG/NCV diagnostics
Most insurance plans
Specialties

Sixteen neurologic & vestibular specialties, each with a patient-ready guide.

Explore conditions we routinely evaluate and treat—from BPPV, Menière's disease, and vestibular migraine to neuropathy and movement disorders—then dive into approachable education tailored to each topic.

Aerospace Medicine

Spatial Disorientation in Aviation / Aerospace Environments

How flight and changing gravity can make vision, the inner ear, and body sensation disagree about position and motion.

Explore guide
Core Otoneurology

Vestibular Disorders

Vestibular disorders encompass a range of conditions affecting the vestibular system, which is crucial for ma…

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Canalith Particle (BPPV)

Vertigo (BPPV)

Benign Paroxysmal Positional Vertigo (BPPV) is a common cause of vertigo that results from dislodged calcium…

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Endolymphatic Hydrops

Meniere’s Disease

Meniere's Disease is a disorder of the inner ear causing severe dizziness (vertigo), ringing in the ears (tin…

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Vestibular Nerve

Viral Neuronitis / Labyrinthitis

These conditions involve inflammation of the inner ear or the nerves that connect the ear to the brain, often…

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Ocular Motor Tracking

Nystagmus

Nystagmus is defined as any rhythmic, involuntary oscillation of the eyes. It can either be physiological or…

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Cerebellar Balance

Gait Ataxia

Gait ataxia is a form of ataxia (lack of muscle control) that affects walking and is characterized by uncoord…

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Auditory & Tinnitus

Tinnitus

Tinnitus is characterized by hearing noises in the ears that are not caused by an external source. Types incl…

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Sensorineural Hearing

Hearing Loss

Hearing loss can result from damage to different parts of the ear, including the outer, middle, and inner ear…

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Autonomic & Vascular

Orthostatic Hypotension

Summarizes diagnosis, symptom patterns, and treatment paths for this specialty so you walk into appointments better informed.

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Peripheral Sensation

Neuropathy

Neuropathy, or peripheral neuropathy, involves damage or dysfunction of one or more nerves, resulting in numb…

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Cranial Nerve V

Trigeminal Neuralgia

Trigeminal Neuralgia is a chronic pain condition affecting the trigeminal nerve, which carries sensation from…

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Movement Disorders

Parkinson's Disease

Parkinson's Disease is a progressive nervous system disorder that affects movement. Symptoms start gradually,…

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Neuromuscular Junction

Neuromuscular Disorders

Summarizes diagnosis, symptom patterns, and treatment paths for this specialty so you walk into appointments better informed.

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Sleep Neurophysiology

Sleep Disorders

Sleep disorders are conditions that significantly affect an individual's ability to achieve restful, restorat…

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Cardiovascular Syncope

Cardiac Arrhythmias

Summarizes diagnosis, symptom patterns, and treatment paths for this specialty so you walk into appointments better informed.

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New Visual Diagnostic Reference

Nystagmus Video Library: Types & Diagnostic Insights

An annotated visual guide to the eye-movement patterns that drive vestibular diagnosis — horizontal, vertical, torsional, and the signature beats of posterior- and lateral-canal BPPV. Curated by Dr. Purcell for clinicians, trainees, and patients alike.

  • 14 annotated reference clips with clinical context
  • Patterns organized by plane and provocation
  • Built-in glossary of VNG & chart abbreviations
Six annotated frames from the library: right-beating, left-beating, upbeat, downbeat, clockwise torsional and counterclockwise torsional nystagmus Six of 14 patterns — horizontal, vertical & torsional
Proprietary Innovation · Patented Medical Device

The DizzyDoctor® Vertigo Recording Goggles

Invented and patented by Dr. Ian Purcell, MD PhD, the DizzyDoctor® Goggles bring laboratory-grade video-nystagmography to the bedside, the clinic, and across extreme field environments.

Dual Infrared Micro-Sensors (850/940nm) Records subtle ocular nystagmus in complete visual darkness without cortical suppression.
One-Touch Tactile Diagnostic Trigger Instant event capture during spontaneous vertigo spells and provocative positioning maneuvers.
Hinged Smartphone Tele-Recording Cradle Locks iOS & Android devices over the optical plane for immediate telemedicine cloud synchronization.
Validated Across 7 Continents Field-proven from Arctic polar research to helicopter flight decks and specialized sports medicine.
DizzyDoctor Vertigo Recording Goggles with hinged smartphone cradle and precision green trigger button
1:1 Medical CAD · Interactive 3D Available
US & International Patents

Utility & design patents covering eye-tracking optics, calibration logic, and kinematic nystagmus algorithms.

Portrait of Dr. Ian Purcell in a white coat
About Dr. Purcell

A clinician-scientist focused on the vestibular system.

Dr. Ian Purcell is a clinical neurologist with an additional focus in otoneurology and headache management. He completed the combined MD/PhD program in Neuroscience at the University of Texas Medical Branch, with six years of NASA-funded research in vestibular neurophysiology.

A lifelong aviator and active researcher, Dr. Purcell continues to train and certify with the FAA in fixed-wing aircraft and complex rotorcraft—including turbine jet-engine helicopters such as the Hughes 369HS. From an aerospace medicine perspective, this firsthand cockpit immersion enables him to deeply understand the multi-axis forces and sensory mismatches pilots experience, diagnose vertiginous complaints in aviators, and prescribe focused, flight-specific vestibular rehabilitation protocols that restore spatial orientation and safely return flight crews to the air.

Education
MD & PhD
Neuroscience
Specialty
Otoneurology
Vertigo & Balance
Aviation
Rotorcraft & Fixed-Wing
FAA Certified · Hughes 369HS
Experience
30+ years
Clinical & Aerospace
Aerospace Medicine & Flight Neurology

Spatial Disorientation.
When your senses lose the horizon.

Flight and rapid gravitational transitions challenge how the brain integrates visual, vestibular, and proprioceptive inputs. When familiar signals conflict, spatial disorientation can deceive even the most seasoned aviators. Dr. Purcell translates aerospace neurophysiology directly into clinical diagnostics and pilot rehabilitation.

NASA Research Alum · 6 Years Vestibular Science
FAA Certified Rotorcraft & Fixed-Wing Pilot
In-Flight Vestibular & VNG Diagnostics
Dr. Ian Purcell seated in an open helicopter doorway above the coastline, wearing an Aviation Vertigo Specialist shirt, with DizzyDoctor recording equipment mounted beside him
IN-FLIGHT TELEMETRY · 1,500 FT AGL
Vestibular science, from the clinic directly into the flight deck.
10 Consecutive Years · 2016–2025
Peer-Voted Medical Distinction

San Diego Magazine Top Doctors

Dr. Ian Purcell and Dr. Monali Patel are voted annually by physician peers into San Diego Magazine’s Top Doctors list for specialized neurology and otoneurology excellence.

The cover archive · 2016–2025 · Select any cover to view in full resolution

San Diego Magazine, 2025 Top Doctors issue
2025
San Diego Magazine, 2024 Top Doctors issue
2024
San Diego Magazine, 2023 Top Doctors issue
2023
San Diego Magazine, 2022 Top Doctors issue
2022
San Diego Magazine, 2021 Top Doctors issue
2021
San Diego Magazine, 2020 Top Doctors issue
2020
San Diego Magazine, 2019 Top Doctors issue
2019
San Diego Magazine, 2018 Top Doctors issue
2018
San Diego Magazine, 2017 Top Doctors issue
2017
San Diego Magazine, 2016 Top Doctors issue
2016
DizzyDoctor Magazine, January/February 2026, Top Doctors cover featuring a helicopter DizzyDoctor Magazine · 2026
DizzyDoctor Magazine · 2026 Milestone

A life above the horizon.

Pioneering in-flight neurophysiology, advanced vertigo rehabilitation, and specialized patient care across Southern California.

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Visit Our Clinic · San Diego, CA

San Diego specialty otoneurology, by appointment.

Comprehensive diagnostic evaluations, advanced rotational testing, and patient-centered treatment for acute and chronic vestibular and balance disorders.

DizzyDoctor Otoneurology Clinic 7625 Mesa College Drive, Suite 200A, San Diego, CA 92111
Direct Physician Otoneurology Evaluations
Full Diagnostic Suite: TRV & Omniax Chairs, VNG, CDP, EMG
Ground-Floor Patient Access with Free On-Site Parking
Centrally Located off I-805 & CA-163 in Kearny Mesa
Accepting New Patient Appointments
Telephone
(858) 223-2172
Medical Fax
(858) 533-8397
Clinic Hours
Monday – Thursday · 8:00 AM – 4:30 PM
Mesa College Professional Center · Suite 200A Open in Google Maps ↗