South Central Chapter

Serving TX, OK, AR

Set this as my local chapter

Parkinson’s Foundation South Central makes life better for people with Parkinson’s disease (PD) by improving care and advancing research towards a cure. Whether you are newly diagnosed with PD or have been managing it for years, are a care partner, family member or friend of someone with PD, we are here to help you.

Two people boxing at the Moving Day walk
Woman and young child embracing with smiles at Moving Day

About Us

We are leaders in ensuring expert Parkinson’s care, educating and empowering the Parkinson’s community and driving the understanding of Parkinson’s through research. As a national organization with local presence and impact, we bring help and hope to the estimated one million people in the U.S., 10 million worldwide, who are living with Parkinson’s.

Our Impact

Your support of the Parkinson’s Foundation South Central Chapter makes a big impact on the quality of life for people with Parkinson’s disease (PD) right here in your community, as well as across the country and around the world! Read more about our impact in the South Central Chapter.

Read more about our chapter's impact

Thanks to supporters like you, we are able to provide free resources and advance research toward a cure.


Find Expert Care

Access to care professionals, medications and services

Parkinson’s Foundation Global Care Network creates more opportunities for people with PD to access high-quality care.

Find Expert Care

Hospital Safety Guide

Advocate for your best care

The Hospital Safety Guide contains useful tools and information to help a person with Parkinson’s during their next planned or unplanned hospital visit.

Order a guide 


The Helpline answers more than 20,000 calls a year

Call our Helpline at 1-800-4PD-INFO (473-4636) to find your nearest PD specialist or local resources and get answers to your PD and caregiving questions.

Contact the Helpline

PD Library

We are your trusted ally for information at every stage

We offer resources including videos, podcasts, webinars and other opportunities to learn about the many aspects of living well with PD.

Search the Library

Community Grants

The Parkinson’s Foundation Community Grants program supports programs that further the health, wellness and education of the Parkinson’s community. We help people with Parkinson’s live better lives, today.

In the 2023 grant cycle, we awarded three local grants to community programs. These Community Grants are made possible through the support of donors.

Learn more about the Parkinson’s Foundation Community Grants program, including application information, deadlines and more.

Contact Us


Parkinson’s Foundation
ATTN: South Central
200 SE 1st Street, Suite 800
Miami, FL 33131

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Chapter Board

Our Chapter Board ensures our impact is community based and community lead.

Dr. Valerie Johnson PT, DPT

Dr. Valerie Johnson PT, DPT – President

Dr. Valerie Johnson PT, DPT founded Balance Therapy LLC and The Parkinson’s Mind Body Institute to best serve those living with PD.

Valerie has a doctorate in physical therapy from Texas State University and is certified in PWR! and BIG therapy for Parkinson’s. She is the team neuro-therapist for the Dallas Mavericks, providing comprehensive concussion evaluations and treatments. Valerie teaches dance and movement classes for Parkinson’s along with individual Physical Therapy evaluations and treatments.

Valerie attended Emory University to earn the Vestibular Rehabilitation Competency Certificate sponsored by the American Physical Therapy Association.

Rebecca R. Cantu PT, DPT

Dr. Cantu brings her knowledge and experience as a recent 2017 graduate of University of Incarnate Word. Her experiences include a pediatrics to high intensity sports specific rehabilitation, but her area of interest includes neurological rehabilitation, with a special interest in vestibular therapy. She currently holds a Parkinson’s Wellness Recovery Certification.

Elizabeth Chambers, MD

Dr. Elizabeth Chambers is fellowship trained in movement disorders specializing in Parkinson's Disease, all types of tremor, dystonia, chorea, ataxia, myoclonic jerks, and tics.

Her expertise extends into deep brain stimulation (DBS) initial programming and subsequent follow up care. Dr. Chambers appreciates the field of neurology and the complex beauty of the brain, but has an even deeper passion for her patients. Dr. Chambers was chosen by her peers to receive the Stephen Damm Award for excellence and compassion in patient care.

Dr. Alan Diamond, DO

Dr. Alan Diamond, DO

Dr. Alan Diamond is the director of the Movement Disorders Center at Washington Regional Medical Center. Dr. Diamond earned his medical degree from the University of Health Sciences College of Osteopathic Medicine. He completed his neurology residency at Saint Louis University and fellowship in movement disorders at Baylor College of Medicine in Houston. He specializes in Parkinson’s disease and the surgical treatment of movement disorders.

Lt. Colonel Robert Horn, MBA

Mr. Mark Horn retired from the University of Arkansas - Fort Smith (UAFS) in 2014, culminating twenty-two years of cabinet-level leadership and service. Upon retirement, the Board of Trustees of the University of Arkansas recognized Horn for his "singularly distinctive service and contribution to higher education" by granting him standing as Vice Chancellor Emeritus of the University of Arkansas System and UAFS.

Horn served on active duty in the United States Air Force for 22 years, retiring in 1992 with the rank of lieutenant colonel. In retirement, Horn continues to serve the community through volunteer work.

Dr. Jerome Lisk MD, FAAN

Dr. Jerome Lisk MD, FAAN

Dr. Lisk is a Clinical Assistant Professor at University of Texas Health Science Center at Tyler. He is involved in many ongoing national clinical research trials in Parkinson’s disease.

Dr. Lisk earned his medical degree at the Medical College of Virginia in Richmond, Virginia. He completed an internal medicine internship at the UCLA and his neurology residency and movement disorders fellowship at the University of Texas at Houston.

Lisk received the 2010 NAACP Man of Valor Award, and is a 2013 Graduate of the American Academy of Neurology's Palatucci Advocacy Leadership Forum and Diversity Leadership Program.

Steve Newton, MPH, FACH

Steve is EVP-Chief Growth Officer of Baylor Scott and White Health. Steve has nearly 30 years experience in large integrated delivery systems in the for-profit and not-for profit sectors, and 20+ years’ experience as president of tertiary/quaternary care hospitals. He is a Fellow of the American College of Healthcare Executives.

He is a cum laude graduate of Williams College and received a Master’s Degree in Public Health from Yale University. He is married, has three children, and is a long-distance runner and veteran of 17 marathons. Steve also serves as the Reach Further Campaign Chair for the South Central Chapter.

Dan Novak

Dan Novak, PhD

Dr. Novak volunteers as a Research Advocate and serves as a steering committee member in the Parkinson’s Study Group and as a patient reviewer for NIH’s Patient-Centered Outcomes Research Institute (PCORI). Novak has served as national chair of the People with Parkinson’s Council and he serves as President of the South Central Chapter.

Prior to his diagnosis in 2008, he spent 31 years at IBM where he worked in executive and international healthcare roles. Novak received his Ph.D. in Organizational Leadership from Regent University, his MBA from the University of Dallas and his BBA from the University of North Texas.

Christopher Oholendt, OT/PMHSA

Christopher is an Occupational Therapy Specialist in Little Rock, Arkansas. He graduated with honors in 2000. Having more than 21 years of diverse experiences, especially in Occupational Therapy, Chris affiliates with no hospital, cooperates with many other doctors and specialists in medical group University of Arkansas.

Chris is motivated to promote health. Occupational therapy has afforded him the opportunity to understand the healthcare landscape and the challenges of the cost, quality, access paradigm. Looking for ways to innovate outpatient PT, OT, Hand Therapy and fitness for the community.

Tom Pajda, JD

Tom is an attorney with extensive experience in telecommunications law. He recently retired from a 36-year career with AT&T as Assistant Vice President and Senior Legal Counsel which he completed after being diagnosed in 2010.

Tom is a graduate of St. Mary's University in San Antonio where he earned a BA in economics, and attended Southern Illinois University, earning a Juris Doctor degree. Tom and his wife have been active supporters of Moving Day DFW since the beginning; Along with their four adult children and family and friends, their team was awarded the "Most-Spirited" honor in 2018 & 2019.

Dr. Sabiha Parveen, PhD, CCC-SLP

Dr. Sabiha Parveen is at Oklahoma State University where her expertise is in the investigation of speech and cognitive symptoms associated with Parkinson's disease (PD), and the development of more effective speech and cognitive intervention programs for PD as well as quality of life related issues among individuals with PD. Her other areas of interest include multicultural issues in speech language pathology and scholarship of teaching and learning in Communication Sciences and Disorders.

Dr. Jennifer Penn, PT, DPT, NCS

Dr. Penn joined the School of Physical Therapy faculty at the University of the Incarnate Word in 2015 to teach evidence-based evaluation and treatment of individuals with neurological injuries. She earned a bachelor's degree in Neuroscience from Brigham Young University, Provo, UT in 2002, and a Doctor of Physical Therapy degree from the University of Southern California, Los Angeles, CA in 2005.

She currently provides care for individuals with neurological injuries through the UIW School of Physical Therapy Community Clinic. She is driven by the hope of providing the best care by assisting in development of the clinicians of tomorrow.

Gretchen Rosswurm

Gretchen Rosswurm

Gretchen was diagnosed with Parkinson’s disease (PD) in 2017 at the age of 52.

Her commitment to the Parkinson’s community springs from a deep history of PD in her family while at the same time believing that what seems an impossible challenge creates opportunities for connection, healing, and hope.

Professionally, Gretchen’s work experience centers around corporate philanthropy. She also blogs and writes short fiction. She lives with her family in Dallas. Gretchen was selected to join the Parkinson’s Foundation People with Parkinson’s Council in 2018 and was elected as Chair in 2020 after serving as vice-chair.

Okeanis Vaou headshot

Okeanis Vaou, MD, FAAN

Dr. Vaou has recently joined UT Health in San Antonio and is Vice Chair of Faculty Development. Prior to that she served as the Director of the Movement Disorders and Deep Brain Stimulation Center at St. Elizabeth's Medical Center in Boston, MA. Her expertise is treating patients with Parkinson’s Disease, Atypical Parkinson’s, Essential tremor and other movement disorders.

Dr. Vaou is actively involved in medical student education and has received national and regional awards for education. She was also selected to participate in the nationally esteemed program by the Academy of Neurology “Women Leading in Neurology”. Read more here.

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