UC Davis Huntington's disease HDSA Center of Excellence clinical research team
The UC Davis Huntington's Disease Clinic is a
Huntington’s Disease Society of America Center of Excellence known for our expertise in clinical care for Huntington’s disease patients. The Huntington’s Disease Clinic is one of the largest in the country and is led by UC Davis faculty members in the Department of Neurology and Psychiatry. In addition to clinical care, patients also have access to emerging new treatments through clinical trials.


Vicki Wheelock

Vicki Wheelock

Dr. Vicki Wheelock is the director of the HDSA Center of Excellence at UC Davis. She is a Health Sciences clinical professor in the Department of Neurology at UC Davis and an investigator member of the Huntington Study Group. Dr. Wheelock is the principal investigator of the California Institute of Regenerative Medicine Grant DR2A-05415, funding a planned study of engineered adult stem cells to treat patients with Huntington's disease.
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Lorin Scher

Lorin Scher

Dr. Lorin Scher is a Health Sciences associate clinical professor in the Department of Psychiatry and Behavioral Sciences. He is board-certified in General Psychiatry and Psychosomatic Medicine. Dr. Scher's clinical interests include emergency psychiatry, consultation liaison psychiatry, and the psychiatric management of Huntington's disease. His academic interests include improving clinical outcomes in Huntington's disease and developing collaborative care initiatives to improve mental health outcomes in the primary care setting.

Celia Chang

Celia Chang

Dr. Celia Chang is a Health Sciences clinical professor in the Department of Neurology at UC Davis. She is board certified in Neurology. A member of the Child Neurology Society, her practice focuses on children suffering from diseases and congenital disorders of the nervous and neuromuscular systems, including epilepsy, movement disorders, muscular dystrophies, and muscle weakness. As a consultant child neurologist, she brings more than 15 years of experience and expertise in pediatric neurology to the HD Center of Excellence team.

Sasha Duffy

Sasha Duffy

Former Chief Resident and Movement Disorders Fellow in the Department of Neurology at UC Davis, Dr. Alexandra "Sasha" Duffy joined the faculty as an assistant clinical professor in 2015.  In addition to her clinical role as a neurologist specializing in movement disorders, Dr. Duffy is an investigator in the UC Davis Huntington's disease stem cell studies, and she also serves as Director of the Neurology Residency Program.

Lisa Kjer

Lisa Mooney

Lisa Mooney is the licensed clinical social worker (LCSW) for the HDSA Center of Excellence and Northern California Chapter. HD patients, family members, and community providers can call Lisa regarding HD resources, community resources and benefits, information and education, and long term care planning.

Amanda Martin

Amanda Martin

Amanda Martin graduated from UC Davis in 2009 with a BA in linguistics. She joined the HDSA Center of Excellence in 2010 as a study coordinator. She is the designated coordinator on a number of trials and also manages the administrative operations for all the HD clinical trials.

Mara Sifry-Platt

Mara Sifry-Platt

Mara received her Masters’ Degree in Genetic Counseling from UC Berkeley in 1992. She joined the UC Davis HDSA Center of Excellence in 2008. She documents family histories, answers questions about genetics, DNA testing, and reproductive options, and she helps people who are considering predictive testing. Mara also works as a genetic counselor for Kaiser in Northern California where she coordinates a Genetic Movement Disorder Clinic and annual HD education event.

Rosy Chow

Rosy Chow

Rosy has been a practicing licensed physical therapist for more than 30 years. Rosy works as a lead physical therapist and clinical neuro specialist at UC Davis Medical Center. Since 1997, she has been providing physical therapy consultation services to the HDSA Center of Excellence at UC Davis Medical Center.

Sarah Tomaszewski Farias, Ph.D., ABPP-CN

Sarah Tomaszewski Farias

Dr. Sarah Farias is a board-certified neuropsychologist with experience in the cognitive assessment of clinical populations, including Huntington’s disease. She is a health sciences professor in the Department of Neurology at UC Davis and co-leads the Clinical Core for the federally funded UC Davis Alzheimer’s Disease Research Center. Her research in the area of cognitive aging has been funded by the National Institute of Aging (NIA) for the last 10 years. Dr. Farias is a collaborative investigator on the California Institute of Regenerative Medicine Grant DR2A-05415 to study the use of adult stem cells to treat patients with Huntington's disease.


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