Gary Shealy Memorial ALS Clinic

Chris Galletti, M.D.

As a family physician, Dr. Galetti believes in building meaningful relationships with his patients and their families. His goal is to provide compassionate care and serve as a partner throughout each patient’s health journey. He joined the ETSU Health ALS Clinic after collaborating with Dr. Courtney Andrews, SLP, in the Interprofessional Education (IPE) program. He is passionate about working with the dedicated team to guide and support people living with ALS, helping them navigate every step of their journey. 

Sarah Hewitt, M.D.

Kristen McHenry Ed.D., RRT, RRT-ACCS, FAARC

Kristen has been practicing respiratory care in the Tri-Cities for more than 20 years. She earned a Bachelor of Science in cardiopulmonary science, a Master of Science in allied health education, and a Doctor of Education in higher educational leadership and policy analysis from East Tennessee State University. She specializes in adult critical care and ALS.

She teaches accredited online degree advancement programs and serves as program director for the Master of Science in respiratory care program at Boise State University. Additionally, she serves as a board member for the Commission on Accreditation for Respiratory Care and as a fellow of the American Association for Respiratory Care.

Courtney Andrews, Ed.D., CCC-SLP

Courtney Andrews is a speech-language pathologist who has been working with adults with various cognitive, communication and swallowing disorders for more than a decade. She has been part of the Gary E. Shealy Memorial ALS Clinic since 2017 and has a passion for providing evidence-based recommendations to help individuals living with ALS maintain their ability to communicate and maximize their quality of life. 

Allison Bourassa, PT, DPT, NCS, ATC

Dr. Allie Bourassa is a board-certified neurologic clinical specialist. She works as a physical therapist and associate professor at East Tennessee State University and has more than 15 years of experience treating individuals with neurological and vestibular disorders. She has worked across various care settings and specializes in conditions such as stroke, brain injury, spinal cord injury, Parkinson’s disease, multiple sclerosis and ALS. At ETSU, she teaches neurologic physical therapy content within the Doctor of Physical Therapy program. Dr. Bourassa earned a Bachelor of Science from Wingate University and a Doctor of Physical Therapy from the Medical University of South Carolina, and she completed a neurologic residency at Brooks Rehabilitation.

Shawn Cummings, ATP

Shawn Cummings is a dedicated professional at Numotion, a leading provider of complex medical equipment tailored to individuals with advanced health care needs. With a deep passion for helping others, Shawn brings both expertise and empathy to his work, ensuring each client receives the tools and education needed to live more comfortably and independently. His commitment to the field is motivated by a desire to make a tangible difference in people’s lives, empowering them through understanding and support, especially those facing significant physical challenges. 

Kathryn Halstead, OTD, MSOT, OTR/L, CPAM

Dr. Kathryn Halsted is an occupational therapist with more than a decade of clinical experience working with adult and geriatric populations. She has worked in inpatient rehab, acute care and skilled rehabilitation settings. She earned a Bachelor of Arts in music from Carson-Newman College, a Master of Science in occupational therapy from Milligan College and a post-professional Doctor of Occupational Therapy from Rocky Mountain University of Health Professions.

Lindsay Brook Williams, OTD, OTR/L, MT-BC, CPAM

Dr. Lindsay Williams is the doctoral capstone coordinator and an assistant professor in the Doctor of Occupational Therapy program at East Tennessee State University. She has more than a decade of clinical experience, primarily in outpatient neurorehabilitation. Dr. Williams serves as the graduate coordinator for the ETSU OTD program and is one of two occupational therapy clinicians at the Gary E. Shealy Memorial ALS Clinic. In addition to her licensure as an occupational therapist, she is a board-certified music therapist.

Michelle Lee, Ph.D., RDN, LDN

Michelle Lee is a registered dietitian who has been practicing for more than 30 years, providing nutrition therapy to patients with ALS, Alzheimer’s, Parkinson’s, diabetes, cardiovascular disease and weight management needs. She teaches in the graduate program at East Tennessee State University, preparing future registered dietitians. When patients attend the clinic, she assesses their nutritional status and provides information to help them maintain their weight through healthy eating.

Jeffrey A. Gray, Pharm.D., CDCES

Dr. Jeffrey Gray is a professor in the Department of Pharmacy Practice at East Tennessee State University’s Gatton College of Pharmacy and an adjunct professor in the Department of Community and Behavioral Health and the College of Public Health. His practice site is with the interprofessional ALS Clinic provided through ETSU’s Quillen College of Medicine. His patient care focus is optimizing pharmacotherapy outcomes for all patients. 

Rebecca Milner, LPC-MHSP-S

Dr. Rebecca Milner is an associate professor and counseling program coordinator in the Department of Counseling and Human Services. She has been on the faculty at East Tennessee State University for several years. She is passionate about counseling, counselor education and supervision.

Jennifer Zorotovich, Ph.D., CFLE, GC-C

Dr. Zorotovich is a faculty member in the Department of Counseling and Human Services at East Tennessee State University and serves as the clinic coordinator for the Gary E. Shealy Memorial ALS Clinic. She received her undergraduate degree from the University of Georgia and her graduate degrees from the University of Tennessee. Her research focuses on aging, gerontology, end-of-life issues, bereavement, social capital and vulnerabilities, social determinants of health, and intergenerational interactions. She is a certified grief counselor and family life educator. 

Florence Weierback, Ph.D., MPH, R.N.

Dr. Flo Weierbach has cared for many people in their time of need. She has provided care for patients in their homes, in clinics and in hospitals. As a professor of nursing, she teaches both graduate and undergraduate students. With more than 40 years of nursing experience, she is happy to serve as the nurse for the clinic and provide care alongside other East Tennessee State University faculty members.