- Internship - Scott and White Memorial Hospital (2004-2005), Internal Medicine
- Medical School - Texas A&M Health Science Center College of Medicine (2000-2004)
- Fellowship - Northwestern University School of Medicine (2010-2011), Sleep Medicine
- Graduate School - UT Dallas/Naveen Jindal School of Management (2018-2020), Healthcare Leadership
- Fellowship - Thomas Jefferson University School of Medicine (2008-2009), Neurophysiology
- Fellowship - Thomas Jefferson University School of Medicine (2009-2010), Epilepsy
- Residency - Northwestern University School of Medicine (2005-2008), Neurology
Ryan Hays, M.D.
Epilepsy Section Head & Director of Sleep Medicine for Parkland Health & Hospital System
- Epilepsy & Seizures
Ryan S. Hays, M.D., is an Associate Professor in the Department of Neurology at UT Southwestern Medical Center.
A specialist in both epilepsy and sleep medicine, Dr. Hays is among a small group of U.S. neurologists certified by the American Board of Psychiatry and Neurology in four disciplines: neurology, clinical neurophysiology, epilepsy, and sleep medicine.
He is the Medical Director of the epilepsy and electroencephalography (EEG) services at Clements University Hospital and heads the sleep medicine service at Parkland Health & Hospital System.
Dr. Hays is passionate about educating patients and other physicians. The Director of both the Clinical Neurophysiology and Fellowship Programs, he has been honored with a number of teaching awards, including being named UT Southwestern’s Neurology Faculty Teacher of the Year on more than one occasion.
A past President of the Texas Society of Sleep Professionals, Dr. Hays currently serves on the professional advisory board of the Epilepsy Foundation of Texas. He is a member of professional organizations that include the American Academy of Neurology, American Epilepsy Society, American Clinical Neurophysiology Society, Sleep Research Society, and American Academy of Sleep Medicine.
He joined the UT Southwestern faculty in 2011.
Dr. Hays earned his medical degree at Texas A&M University Health Science Center College of Medicine. He completed both a neurology residency and a sleep medicine fellowship at Northwestern University, as well as a fellowship in clinical neurophysiology and epilepsy at Thomas Jefferson University Hospitals.
Meet Dr. Hays
Epilepsy and Sleep Disorders Specialist in Dallas
Ryan Hays, M.D., is one of only a handful of U.S. neurologists who are fellowship-trained to evaluate and treat patients with epilepsy and sleep disorders. He is board-certified in four disciplines: neurology, clinical neurophysiology, epilepsy, and sleep medicine.
As Medical Director of William P. Clements Jr. University Hospital’s epilepsy and electroencephalography (EEG) services, he oversees the management of patients with refractory epilepsy. He also identifies patients who may be candidates for neurosurgery when medications do not effectively control their seizures.
Dr. Hays also leads the sleep medicine service at Parkland Health & Hospital System. He is an expert in diagnosing and treating all types of sleep disorders – from restless leg syndrome, insomnia, and circadian rhythm disorders to sleep apnea and narcolepsy.
He has special expertise in diagnosing parasomnias (sleep disorders that cause abnormal sleep-related behaviors) and distinguishing them from sleep-related/nocturnal seizures. This distinction can be difficult to make and is key to appropriate treatment.
Focused on Better Diagnosis and Treatment
While Dr. Hays’ subspecialties may seem unrelated, there is substantial overlap in many of his patients. For example, patients with seizures have a significantly higher rate of sleep disorders compared to the general population.
“We believe that by identifying and treating these comorbid sleep disorders, we can improve the quality of life and potentially reduce the number of seizures in our patients with epilepsy,” he says.
That makes Dr. Hays’ dual training especially beneficial to patients.
“Using sophisticated techniques such as video monitoring coupled with sensors that monitor brainwave activity, breathing, heart rate, and limb movements, I can perform highly specialized diagnostic testing in both the Sleep Lab and the EEG Lab,” he says. “This helps us correctly diagnose and appropriately treat patients with sleep or seizure disorders.”
The importance of providing an accurate assessment cannot be overstated, Dr. Hays says.
“Patients who are misdiagnosed and prescribed the wrong class of agents are unlikely to improve and may be exposed to the side effects of unnecessary treatment.”
Thankfully, he says, UT Southwestern is equipped to expertly evaluate and treat people experiencing the full spectrum of sleep and seizure disorders.
“The expertise, experience, and sophisticated tools and techniques available at our Level 4 Epilepsy Center and Clinical Center for Sleep and Breathing Disorders enable us to offer patients cutting-edge treatments that are second to none.”
In addition to patient care, Dr. Hays is involved in ongoing research into the neural networks that play a role in both epilepsy and in various sleep disorders.
“We think that a better understanding of these neural networks may help us understand why some patients have certain neurologic conditions in the first place. For example, some patients have seizures only during their sleep or only during wakefulness,” he notes. “In these patients, a better understanding of how the sleep/wake systems in the brain interface with the cortical regions of the brain that cause seizures provides better insight into the mechanisms of their disease, and will hopefully guide us to better treatments.”
Education & Training
Professional Associations & Affiliations
- Sleep Research Society
- American Epilepsy Society
- American Clinical Neurophysiology Society
- American Academy of Sleep Medicine
- American Academy of Neurology
Honors & Awards
- Law Sone Award 2000, Texas Wesleyan University
- Neurology Resident - Teacher of the Year 2008, Northwestern University
- Neurology Fellow - Teacher of the Year 2010, Thomas Jefferson University
Books & Publications
"Epilepsy Surgery and the Prevention of SUDEP" in Sudden Death in Epilepsy: Forensic and Clinical Issues
Ryan S. Hays and Michael R. Sperling (2011), Boca Raton, FL, Taylor and Francis Group, LLC
"Sleep Stage Scoring." in Handbook of Sleep Medicine, 2nd edition.
Ryan S. Hays and Phyllis C. Zee (2011), Philadelphia, PA, Lippincott, Williams, & Wilkins.
- "Epilepsy Surgery and the Prevention of SUDEP" in Sudden Death in Epilepsy: Forensic and Clinical Issues
Cyclodextrins in reactions of alcohols with aqueous hypochlorite: catalysts or reactants?
Ryan S Hays, G.Paul Hobbs, Massaran Kourouma, Jennifer J Ries, Timothy M Ste. Marie, Susan K.M Sherwood, R.G Landolt Journal of Molecular Catalysis A: Chemical 1998
beta-scission of tertiary alkyl hypochlorites promoted by phase-transfer catalysis
Dailey JI, Hays RS, Lee H, Mitchell RM, Ries JJ, Landolt RG, Husmann HH, Lockridge JB, Hendrickson WH The Journal of organic chemistry 2000 Apr 65 8
Sudden unexpected death in epilepsy.
Nei M, Hays R Current neurology and neuroscience reports 2010 Jul 10 4
Mimetic automatisms expressing a negative affect in two patients with temporal lobe epilepsy.
Hays RS, Lal N, Rosenow J, Macken MP, Schuele SU Epilepsy & behavior : E&B 2011 Mar 20 3
Anterior corpus callosotomy combined with anterior temporal resection with amygdalohippocampectomy: outcome in a patient with congenital bilateral perisylvian syndrome.
Junming Z, Yuanyuan Z, Fang F, Weiming F, Ryan H, Jianmin Z, Li F, Xiao J, Shuda C, Turkish neurosurgery 2014 24 1 70-4
Retrospective case series of the clinical features, management and outcomes of patients with autoimmune epilepsy.
Dubey D, Samudra N, Gupta P, Agostini M, Ding K, Van Ness PC, Vernino S, Hays R Seizure 2015 Jul 29 143-7
Temporal lobe volume predicts Wada memory test performance in patients with mesial temporal sclerosis.
Ding K, Gong Y, Modur PN, Diaz-Arrastia R, Agostini M, Gupta P, McColl R, Hays R, Van Ness P Epilepsy research 2015 Nov 120 25-30
Efficacy of gabapentin enacarbil in adult patients with severe primary restless legs syndrome.
Lee DO, Buchfuhrer MJ, Garcia-Borreguero D, Avidan AY, Ahmed M, Hays R, Ondo WG, Jaros MJ, Kim R, Shang G, Sleep medicine 2016 03 19 50-6
Effect of Gabapentin Enacarbil on Individual Items of the International Restless Legs Study Group Rating Scale and Post-sleep Questionnaire in Adults with Moderate-to-Severe Primary Restless Legs Syndrome: Pooled Analysis of 3 Randomized Trials.
Ahmed M, Hays R, Steven Poceta J, Jaros MJ, Kim R, Shang G, Clinical therapeutics 2016 Jul 38 7 1726-1737.e1
Evaluation of positive and negative predictors of seizure outcomes among patients with immune-mediated epilepsy: a meta-analysis.
Dubey D, Farzal Z, Hays R, Brown LS, Vernino S Therapeutic advances in neurological disorders 2016 Sep 9 5 369-77
Neurological Autoantibody Prevalence in Epilepsy of Unknown Etiology.
Dubey D, Alqallaf A, Hays R, Freeman M, Chen K, Ding K, Agostini M, Vernino S JAMA neurology 2017 Feb
Diagnostic Yield of 2-Hour EEG Is Similar With 30-Minute EEG in Patients With a Normal 30-Minute EEG.
Mahuwala Z, Ahmadi S, Bozoky Z, Hays R, Agostini M, Ding K, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society 2019 Feb
Response to: Assessing sexual dysfunction in men with epilepsy: A need for specific tools!
Olson DM, Dawson EA, Stutzman SE, Hays RS, Epilepsy & behavior : E&B 2019 Jul 106278
Performance of the International Index of Erectile Function tool in men with epilepsy.
Dawson E, Stutzman SE, Olson DM, Hays RS, Epilepsy & behavior : E&B 2019 Mar 94 78-81
Assessing recent suicidal ideation and behavior in the adult epilepsy monitoring unit.
Husari KS, Blackburn KM, Ding K, Roaten K, Hays R, Epilepsy & behavior : E&B 2019 Mar 94 100-103
Comparison of psychiatric comorbidities and impact on quality of life in patients with epilepsy or psychogenic nonepileptic spells.
Abe C, Denney D, Doyle A, Cullum M, Adams J, Perven G, Dave H, Dieppa M, Hays R, Agostini M, Ding K, Epilepsy & behavior : E&B 2019 Nov 102 106649
Non-lesional mesial temporal lobe epilepsy requires bilateral invasive evaluation.
Perven G, Podkorytova I, Ding K, Agostini M, Alick S, Das R, Dave H, Dieppa M, Doyle A, Harvey J, Lega B, Zepeda R, Hays R, Epilepsy & behavior reports 2021 15 100441
Stereo-EEG Evaluation and Surgical Treatment in Patients With Drug-Resistant Focal Epilepsy Associated With Nodular Heterotopia.
Durica SR, Caruso JP, Podkorytova I, Ding K, Hays R, Lega B, Perven G, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society 2021 Apr
Physical activity status and quality of life in patients with epilepsy - Survey from level four epilepsy monitoring units.
Green R, Abe C, Denney DA, Zhang R, Doyle A, Gadelmola K, Cullum CM, Simon J, Neaves S, Perven G, Dieppa M, Hays R, Agostini M, Ding K, Epilepsy research 2021 Apr 173 106639
Emergency department visits and readmissions in patients with psychogenic nonepileptic seizures (PNES) at a safety net hospital.
Ramamurthy S, Steven Brown L, Agostini M, Alick Lindstorm S, Dave H, Dieppa M, Ding K, Doyle A, Hays R, Harvey J, Perven G, Podkorytova I, Zepeda R, Das RR, Epilepsy & behavior : E&B 2021 Aug 122 108225
Emergent Admissions to the Epilepsy Monitoring Unit in the Setting of COVID-19 Pandemic-related, State-mandated Restrictions: Clinical Decision Making and Outcomes.
Zepeda R, Lee Y, Agostini M, Alick Lindstrom S, Dave H, Dieppa M, Ding K, Doyle A, Harvey J, Hays R, Perven G, Podkorytova I, Das RR, The Neurodiagnostic journal 2021 Jun 61 2 95-103
Nine-year prospective efficacy and safety of brain-responsive neurostimulation for focal epilepsy.
Nair DR, Laxer KD, Weber PB, Murro AM, Park YD, Barkley GL, Smith BJ, Gwinn RP, Doherty MJ, Noe KH, Zimmerman RS, Bergey GK, Anderson WS, Heck C, Liu CY, Lee RW, Sadler T, Duckrow RB, Hirsch LJ, Wharen RE, Tatum W, Srinivasan S, McKhann GM, Agostini MA, Alexopoulos AV, Jobst BC, Roberts DW, Salanova V, Witt TC, Cash SS, Cole AJ, Worrell GA, Lundstrom BN, Edwards JC, Halford JJ, Spencer DC, Ernst L, Skidmore CT, Sperling MR, Miller I, Geller EB, Berg MJ, Fessler AJ, Rutecki P, Goldman AM, Mizrahi EM, Gross RE, Shields DC, Schwartz TH, Labar DR, Fountain NB, Elias WJ, Olejniczak PW, Villemarette-Pittman NR, Eisenschenk S, Roper SN, Boggs JG, Courtney TA, Sun FT, Seale CG, Miller KL, Skarpaas TL, Morrell MJ, Neurology 2020 Jul
- Cyclodextrins in reactions of alcohols with aqueous hypochlorite: catalysts or reactants?
- Epilepsy & Seizures
Q&A by Dr. Hays
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Neurology Clinic - Epilepsyat James W. Aston Ambulatory Care Center 5303 Harry Hines Blvd., 8th Floor
Dallas, Texas 75390 214-645-8800 Directions to Neurology Clinic - Epilepsy Parking Info for Neurology Clinic - Epilepsy