Neurologic Rehabilitation Institute

Mark D. Gage, DOMark D. Gage, DO, is the Medical Director of Brookhaven Hospital. He is board certified in psychiatry and is a graduate of Western University of Health Sciences. In addition to his studies in psychiatry, Dr. Gage completed his undergraduate work in psychology at Chapman University. He brings over seventeen years of experience in psychiatry to Brookhaven.

Dr. GustavsonDr. Ed Gustavson, MD, is the Medical Director of the Neurologic Rehabilitation Institute at Brookhaven Hospital. Dr. Gustavson is a graduate of Harvard Medical School, Pediatric, Residency and Fellowship programs of U. of MN, and the Robert Wood Johnson Clinical Scholars Program of UNC., is board certified in Pediatrics and Neonatology, and is a Fellow of the College of Clinical Pharmacology, Fellow of the American Academy of Cerebral Palsy and Developmental Medicine, and member of the American College of Rehabilitation Medicine. He was Clinical Director of Children’s Medical Center, Tulsa, until it closed in 2012. Formerly he taught and worked at LSU Medical School in Shreveport, LA,  and the University of Minnesota, Mpls, He was a major in the US Army Medical Corps from 1973-75.

Pangaa Buniya, FNP, MSN, is a nurse practitioner with Brookhaven Hospital. She is a board certified family nurse practitioner who graduated from Maryville University. Ms. Buniya has been in the healthcare field for four years, and her experience includes cardiac intensive care and stroke units. She has a passion for working with individuals who are living with CVA, TBI and cardiovascular disease.

Coby D. Nirider, PT, DPT is the Director of NRI at Brookhaven Hospital. Dr. Nirider has over 16 years of experience treating individuals with TBI and Stroke in the post-acute residential and outpatient settings.  He received his Master’s degree in Physical Therapy from Nova Southeastern University in 1999 and Doctor of Physical Therapy in 2010.  Dr. Nirider is currently an Adjunct Professor in Nova Southeastern University’s Transitional DPT Program.  He has several peer-reviewed research publications and has co-authored chapters in rehabilitation texts.

Paul Cochran, MD, is a graduate of University of Oklahoma Medical School and holds board certifications in Family Medicine, Emergency Medicine, and Psychiatry.  His experience includes founding and operating free clinics, practicing emergency medicine in area hospitals and serving as the Director of EMS Boards for Wagoner and Creek counties.

Brain Injury Case Managers

Nancy Weber 2 - retouchNancy Weber, MA, CBIS, is a Brain Injury Case Manager and Clinical Assessor for Brookhaven Hospital.  She completed her Masters degree in Industrial/Organizational Psychology at the University of Tulsa.  Nancy is a Certified Brain Injury Specialist (CBIS). She has prior experience working with adults at various agencies in Oklahoma as a Career Counselor and has specialized in working with at-risk and female offender populations.

Michael Mason is a brain injury case manager as well as an author and journalist. Michael Mason’s book, Head Cases: Stories of Brain Injury and Its Aftermath, is an exploration into the harsh realities endured by brain injury survivors. Since the publication of Head Cases, Mason maintains advocacy work for people with brain injury. He has addressed the Congressional Task Force on Brain Injury and has served as a past president of the Brain Injury Association of Oklahoma. He has also served as a board member of the Academy of Certified Brain Injury Specialists and has participated in two advisory councils committed to the bettering of treatment for veterans with brain injury.


Lydia Pearson, MSW, is a brain injury case manager for Brookhaven Hospital. She completed her master’s degree in social work at the University of Oklahoma-Tulsa. Lydia has several years of experience advocating for under-served populations throughout Arkansas and Oklahoma.


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NRI Therapists

Linda King, MA, CBIS, is the Speech Language Pathologist for Brookhaven Hospital.  She received a Bachelors degree and Masters degree from Oklahoma State University holds a Certificate of Clinical Competence in Speech-Language Pathology.  Linda brings many years of experience in working with acquired brain injury on several acute and post acute programs in Oklahoma and Texas.  She also facilitates the Tulsa Chapter of the Oklahoma Brain Injury Association support groups, and is a Certified Brain Injury Specialist (CBIS).

jonathan-ponds-2Jonathan Ponds
 MSW, CBIS, is a therapist for NRI at Brookhaven Hospital. He completed his undergraduate degree in Social Work from Northeastern State University in Broken Arrow, Oklahoma. He received his Master’s degree in Social Work with a Direct Practice concentration from the University of Oklahoma. Jonathan has experience working with adults in the areas of  substance abuse and mental health in both inpatient and outpatient settings. Johnathan is also a Certified Brain Injury Specialist, CBIS.


Whitney Hicks 1Whitney Hicks, CBIS, is a counselor for NRI at Brookhaven Hospital.  She has been with Brookhaven Hospital since 2009.  Whitney serves as the CARF Coordinator for the NRI, TLC, and CLC programs at the hospital.  She received her Bachelors degree from Rogers State University and is completing the requirements for a Master of Arts in Counseling Psychology from Southern Nazarene University.  Whitney is a Certified Brain Injury Specialist, CBIS.


Doug GrahaDoug Grahamm is a Job Coach and Certified CPI Trainer. He has worked at the Neurologic Rehabilitation Institute at Brookhaven Hospital for over 20 years. Doug received his training at Rogers State University.


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Occupational Therapists

Angela Gunn

Angela Gunn, COTA, is a Certified Occupational Therapist for NRI at Brookhaven Hospital.  Angela completed the Occupational Therapist Assistant program at Brown Mackie Tulsa in January 2015.  She has experience working with patients in both inpatient and outpatient settings, and has worked with children as well as adults.




Danielle Chronister, OTR/L is a Certified Occupational Therapist for NRI at Brookhaven Hospital, and joined the team in September 2016.  She completed her B.S. in Biology from Northeastern State University.  She received her M.S. in Occupational Therapy also from Northeastern State University in August 2016. During her internship, she evaluated and treated clients under supervision with complex medical diagnoses and decreased functional ability secondary to trauma (e.g., SCI and TBI), progressive disease (e.g., COPD and Parkinson’s Disease and onset of new conditions (e.g., Stroke and myocardial infarction) in the acute care setting.



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