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Parkinson and Other Movement Disorders Center's Clinical Team


The clinical team consists of movement disorder trained neurologists, nurse practitioner and licensed clinical social worker.

      Irene Litvan, MD
Professor of Neurosciences
Director, Movement Disorder Center
Tasch Endowed Professor of Parkinson's Disease Research

Dr. Litvan has over 30 years of experience in adult neurology, movement disorders and psychiatry. Throughout her career, she has played a pivotal role in improving the management of parkinsonian and dementia disorders. Currently, Dr. Irene Litvan is the treasurer elect of the International Parkinson and Movement Disorders Society. She is the Department Mentor Co-Director for Neuroscience, mentored junior faculty K proposals in two funded NIH studies: TRANSCENDS and COBRE and has been member of the NINDS NTS1 Review Section that reviews K23 and K08 awards. She has also been member of the AAN John Stolk Award Workgoup.

David Barba, MD
Clinical Professor of Neurosurgery

As UCSD’s Chief of Functional Neurosurgery, Dr. Barba’s areas of expertise include stereotactic surgery for deep brain stimulation and surgical treatments for patients with epilepsy. He is also the neurosurgical consultant for a national multicenter study of gene therapy for Alzheimer's disease. He is a San Diego native with more than 20 years of neurosurgical experience.

Jody Corey-Bloom, MD, PhD
Professor of Neurosciences

Dr. Corey-Bloom is also a Staff Physician at UCSD’s Alzheimer’s Disease Research Center and Director of the Genetically Handicapped Persons Program and the Huntington’s Disease Society of America (HDSA) Center of Excellence at UCSD. She is consistently named by San Diego Magazine as one of the area’s top doctors and was also highly rated by US News & World Report.

Jennifer Friedman, MD

Professor of Clinical Neurosciences and Pediatrics 

Dr. Friedman is an expert in adult and pediatric movement disorders and has particular interest in genetic and metabolic disorders that affect movement. She directs the Movement Disorders and Tourette/Tic Disorder Clinics at Rady Children’s Hospital and does research in the areas of neurogenetics, Tourette’s Syndrome and disability awareness education.

Kathy Huynh, NP-C

Nurse Practitioner

Ms. Huynh graduated from UCSD graduating in 2000 with a BS in biochemistry and cell biology. She was licensed as a registered nurse in 2007 and obtained her MS in Nursing in 2010 from Samuel Merritt University. She is board certified by the American Academy of Nurse Practitioners as a Family Nurse Practitioner.

Stephanie Lessig, MD

Associate Professor of Clinical Neurosciences 

Dr. Lessig evaluates patients regarding general parkinsonism and other movement disorders, including administration of botulinum toxin and deep brain stimulation programming. Her research interests include Parkinson's cognition and applications of deep brain stimulation.

David Coughlin, MD
Assistant Clinical Professor

Dr. Coughlin joined our department in Movement Disorders Division in August 2019. Prior to joining UC San Diego, Dr. Coughlin completed a fellowship in Movement Disorders at the University of Pennsylvania. His research focuses on neuropathology of movement disorders, dementia with lewy bodies and other neurodegenerative diseases. He specializes in the use of digital image analysis of post-mortem tissue to better determine patters of neuropathology in neurodegenerative disease and how these measurements relate to vivo biomarkers like PET, MRI, CSF, and Clinical measurements. 

Brenton Wright, MD

Assistant Professor of Clinical Neurosciences 

Dr. Wright is a neurologist and movement disorders specialist who evaluates and cares for patients with Parkinsonism, tremor, dystonia, and Huntington's disease, among other. His research interests include evaluation of new treatments and diagnostic measures for movement disorders. He administers botulinum toxin injections and works with patients who undergo deep brain stimulation surgery as part of his clinical practice.

Caitlin Mulligan, MD
Assistant Clinical Professor

Dr. Mulligan joined the department in August 2019 as Assistant Clinical Professor in the Movement Disorders Center. Her areas of expertise are movement disorders and deep brain stimulation. She has an interest in medical education. Dr. Mulligan received her medical degree at UC San Diego, she completed her residency in Neurology and fellowship in Movement Disorder at UC Los Angeles. She was born and raised in California. Aside from Neurology, she enjoys hiking, yoga and spending time with her family.

Katherine Longardner, MD
Assistant Clinical Professor

Dr. Longardner is a movement disorders neurologist who evaluates and takes care of patients with conditions including Parkinson disease/parkinsonism, tremor, dystonia, chorea, ataxia, and tics. Her research focuses on parkinsonian non-motor symptoms, especially the relationship between orthostatic hypotension and cognition. She is also interested in using non-invasive electrophysiological techniques to diagnose tremor and other types of involuntary movements.  

Dietrich Haubenberger, MD
Voluntary Associate Clinical Professor 

Dr. Haubenberger received his medical degree and trainings as a neurologist at the Medical University of Vienna, Austria, followed by a tenure track position to become Associate Professor of Neurology in 2014. Dr. Haubenberger's research in movement disorders focuses on clinical trials and the development of outcome measure projects in tremor disorders. He has published in the field of clinical genetics, neurophysiology, as well as outcome measure development. Dr. Haubenberger leads efforts for clinical neurophysiological workup of patients with tremor and other hyperkinetic movement disorders and will teach trainees in these techniques.

Adriana Gonzalez, MSW
Licensed Clinical Social Worker

Ms. Gonzalez is a graduate of San Diego State University obtaining her master’s degree in social work. Adriana spent the last seven years dedicated to providing clinical social work services in a medical setting, five of those years have been here at UCSD. Adriana is committed to working closely with the clinical team to support patients in meeting their treatment goals. Adriana is bilingual speaking both English & Spanish and leads ¡Juntos Unidos!, a Latino outreach program for Parkinson’s disease. Outside of work Adriana enjoys traveling, listening to live music & spending time with her family.