Washington University School of Medicine

Washington University School of Medicine


Contact Information

  Washington University School of Medicine
660 South Euclid Avenue, Campus Box 8111
St. Louis, Missouri 63110

  Stacey Barton (314) 362-3471





Site Coordinators

Stacey Barton, MSW, LCSW
Phone: (314) 362-3471

Stacey Barton, MSW, LCSW is a graduate of the Brown School of Social Work at Washington University. For more than a decade, she has been the coordinator of the HDSA Center of Excellence at Washington University School of Medicine. In that capacity, she manages all aspects of the Center including clinical care, research, genetic testing, information and referral, health education, support groups, counseling and more. She serves as Medical Advisor to the HDSA St. Louis Chapter. She is active in many professional organizations, holding leadership roles. She was recognized by Social Work Today Magazine as a 2012 Dedicated and Deserving Social Worker and by the HDSA with the 2012 Patient and Family Service Award. She has been active with the HSG serving on the nominations and credentialing committee and taking part in the Care+Education workgroup. In addition to her social work duties, she has served as coordinator for ENROLL-HD, HDQLIFE, PREDICT, and COHORT.


Melissa Ammel

unpictured_woman_greenJohanna Hartlein, APRN, MSN

Ms. Johanna Hartlein’s research interest is movement disorders, primarily Parkinson Disease and Tourette Syndrome. The focus of her studies has been using brain imaging approaches, such as MRI and PET scan in combination with cognitive and memory testing to investigate brain function and activities in Parkinson Disease.

Ms. Johanna Hartlein got her Master of Science in Nursing from St. Louis University. Before she joined Movement Disorders Clinic, she served as a Staff Nurse in St.Louis Children’s hospital. She is licensed family nurse practitioner in Missouri since 2006, and registered nurse since 1999. She is a member of several professional societies, including Parkinson Disease Association, Tourette Syndrome Association. Ms. Hartlein has many years of experience treating patients with Parkinson Disease and has been involved in many clinical studies in PD as well as other types of movement disorders.

Site Investigators

Joel Perlmutter, MD

Dr. Perlmutter is the Head of the Movement Disorders Section, Elliot Stein Family Professor of Neurology, Director of the American Parkinson Disease Association Advanced Research Center for Parkinson Disease, and the Director of the Huntington Disease Center of Excellence at Washington University in St. Louis.

Dr. Perlmutter is a fellow of the American Academy of Neurology, the International Society of Cerebral Blood Flow & Metabolism and the Parkinson’s Study Group, the Huntington’s Study Group, the Dystonia Study Group and is a Fellow of the American Neurological Association. He serves as Director of Medical Advisory Committee of the Missouri Chapter of the Dystonia Medical Research Foundation, as Medical Director of the Parkinson’s Disease Information and Referral Center, and as a member of the advisory board of the the St. Louis Chapter of the American Parkinson’s Disease Association.


Brad A. Racette, MD

Dr. Racette is Robert Allan Finke Professor and Executive Vice Chairman of Neurology. Dr. Racette received his A.B. in 1988 in Molecular Biology from Princeton University. He graduated from Northwestern University Medical School in 1992. Following an internship at Northwestern Memorial Hospital in Chicago, IL, he completed residency training in Neurology at Barnes Hospital (Washington University School of Medicine). He completed a fellowship in Movement Disorders at Washington University School of Medicine in 1998 and was appointed to the faculty as an Assistant Professor of Neurology in 1998. Dr. Racette is a member of the American Academy of Neurology, the Movement Disorders Society, the Parkinson’s Study Group, and the Huntington’s Study Group. He serves on the medical advisory board of the St. Louis chapter of the American Parkinson’s Disease Association the Missouri chapter of the Dystonia Medical Research Foundation. He has been elected to the American Neurologic Association and named a fellow in the American Academy of Neurology.


Susan Criswell, MD

Dr. Criswell is a fellowship trained Movement Disorder specialist with postdoctoral degree in clinical investigation. Her research interests are focused in evaluating environmental risk factors for parkinsonism. Specific interests include the use of PET and MRI and as a non-invasive biomarkers of neurotoxic exposures.