Fort Wayne Neuropsychology - Dedicated to Providing the Best In Neuropsychological Care.


Ronald N. Williams, Ph.D.

HSPP, ABN - Neuropsychology

Dr. Ron Williams initially developed the neuropsychology department of the Fort Wayne Neurological Center, which under his leadership grew into Fort Wayne Neuropsychology, one of the largest and most successful neuropsychology practices in our region. Although Dr. William's has now retired from daily practice, he still remains involved and connected with his colleagues at the office.


Dr. William's Doctoral Degree was conferred by the Neuropsychology Program at Ball State University. He holds a Masters Degree in Geropsychology from the University of Notre Dame and his undergraduate degrees were in psychology and chemistry from Indiana University Bloomington. He is board certified in Neuropsychology by the American Board of Professional Neuropsychology (ABPN).

Dr. Williams has years of experience in the diagnosis and treatment of dementing illnesses such Alzheimer's disease as well as Parkinson's disease, stroke, traumatic brain injuries, MS and a wide range of other neurological and psychological conditions. He also has specialized training and experience in the treatment of insomnia. His published research has been focused on the development of neuropsychological measures for diagnosing and assessing impairment in dementing illnesses.


Dr. William's most recent publications and professional presentations have focused on the cognitive changes associated with multiple sclerosis. His practice has also involved forensic neuropsychology leading to work with attorneys and patients in personal injury cases that result in changes in abilities or other matters where issues pertaining to competency, responsibility, and judgement are in question. He is most well known for his work with older adults and the cognitive changes that occur with age, especially Alzheimer's disease and related dementias.

Tasha H. Williams, Ph.D.

HSPP, ABPdN - Neuropsychology

Dr. Tasha Williams completed her doctorate in School Psychology at Ball State University with specializations in Neuropsychology and Counseling Psychology in 2005. She completed her pre-doctoral internship and Residency at Fort Wayne Neurological Center. and continues to work with a wide variety of patients from pediatric, adult, and geriatric populations. She has a particular interest in working with children under the age of five. Dr. Williams has done presentations focused on Alzheimer's disease and Autism Spectrum Disorders for various community groups. She also has served on the Advisory Board for A Day Away Adult Daycare. Dr. Williams has been involved in research focused on academic achievement of students in charter schools, Alzheimer's disease and related dementias, and assessment and instruction of high achieving and gifted children. Her research in the assessment of high achieving and gifted children was presented at the 2007 American Psychological Association meeting as a part of a symposium. Dr. Williams is a member of the National Academy of Neuropsychology and the American Psychological Association. Outside of her work with Fort Wayne Neurology, she has interests in the areas of conflict resolution and issues of diversity. She co-leads diversity workshops for college students and other organizations.

Christina Stemmler, Psy.D.

HSPP - Neuropsychology

Dr. Christina Stemmler completed her doctorate in Clinical Psychology at the Illinois School of Professional Psychology-Argosy University, Schaumburg, Illinois, with specialization in Neuropsychology in 2008. She completed her pre-doctoral internship in neuropsychology and rehabilitation psychology at Hamilton Health Science's Acquired Brain Injury Program in Hamilton, Ontario, Canada. Dr. Stemmler completed her Residency at Fort Wayne Neurological Center, and now works with pediatric, adult, and geriatric populations. Acquired brain injury is her particular area of interest. She is a member of the National Academy of Neuropsychology, the American Psychological Association, and Division 22 of the American Psychological Association: Rehabilitation Psychology.

Erin M. Miles, Psy.D.

HSPP - Neuropsychology

Dr. Erin Miles completed her doctorate in Clinical Psychology at the Illinois School of Professional Psychology-Argosy University, Schaumburg, Illinois, with specialization in Neuropsychology in 2012. She completed her pre-doctoral internship at Lakeview Specialty Hospital in Waterford, Wisconsin with training in neuropsychology, rehabilitation psychology and the treatment of severe chronic mental illness. Dr. Miles completed her Residency at Fort Wayne Neurological Center, and now works with pediatric, adult, and geriatric populations.

Jacob Lutz, Ph.D.

HSPP - Neuropsychology

Dr. Lutz completed his doctoral training at Ball State University, specializing in neuropsychology. He was a student of the late Dr. Raymond Dean, a pioneer in the field of neuropsychology. He completed portions of his clinical training, including practicums, pre-doctoral internship, and post-doctoral residency at the Fort Wayne Neurological Center beginning in 2010. He is currently a full-time staff neuropsychologist seeing patients across the lifespan from pediatric through geriatric. Clinically, he sees patients with a variety of neurocognitive disorders including dementing illnesses, seizure disorders, Parkinson’s disease, Multiple Sclerosis, traumatic brain injury, ADHD, Autism spectrum, and learning disorders. Areas of particular interest also include the development of neuropsychological test instruments and aeromedical psychology. He routinely provides neuropsychological evaluations for individuals referred by the Federal Aviation Administration (FAA) to assist in determining their ability to safely operate an aircraft for the purpose of obtaining a medical waiver. He was the first psychologist in the state to regularly administer the CogScreen – Aeromedical Edition and is currently one of only four such providers in the state. Dr. Lutz is currently serving as a member of the National Academy of Neuropsychology’s (NAN) Legislative Action and Advocacy Committee. For more detailed information, Dr. Lutz's Curriculum Vitae (CV) is available here: CV.

Peter Dodzik, Psy.D.

HSPP, ABN, ABPdN - Neuropsychology

Dr. Dodzik received his Doctorate in Clinical Psychology with specializations in Neuropsychology and Geropsychology from the Florida School of Professional Psychology in 2000. His residency and fellowship were in Pediatric Neuropsychology. He is the Associate Department Chair and Associate Professor of Clinical Psychology at the Illinois School of Professional Psychology-Chicago Northwest. Dr. Dodzik specializes in pediatric neuropsychological assessment and sleep medicine. He is Board Certified in Pediatric and Adult Neuropsychology through the American Board of Pediatric Neuropsychology and the American Board of Professional Neuropsychology.

Kelly Hoover, Ph.D.

HSPP, NCSP - Neuropsychology

Dr. Kelly Hoover completed her doctoral training in School Psychology with a specialization in Neuropsychology at Ball State University in 2018. She completed her pre-doctoral internship and postdoctoral residency at Fort Wayne Neuropsychology. She is both a licensed psychologist and Nationally Certified School Psychologist (NCSP). Dr. Hoover has published or presented research related to psychological/neuropsychological assessment, neurodevelopmental disorders, Parkinson’s disease, and fetal alcohol spectrum disorders (FASD). She also co-wrote a book chapter entitled, Understanding and treating children and adolescents with neurodevelopmental disorders for the APA Handbook of Psychopathology. As a staff neuropsychologist at Fort Wayne Neuropsychology, Dr. Hoover works with pediatric, adult, and geriatric patients with a range of neurodevelopmental and neurocognitive concerns. Specific areas of interest include attention-deficit/hyperactivity disorder (ADHD), learning disorders, dementia, stroke, and pre-surgical evaluations.

Margaret (Peggy) Jones, MSW

LCSW, LMFT, LCAC - Counseling & Consultation

Peggy is a licensed clinical social worker, a licensed marriage and family therapist and a licensed clinical addiction counselor. She provides therapy to individuals, couples and families. Check back soon to learn more about Peggy! 

Lori Stock, MSW

LCSW - Counseling & Consultation

Lori has been working in the field of dementia for many years. She has extensive experience in delivering dementia education and supporting the families of those diagnosed. She has also had the opportunity to work with and support those in the early-stages and their care partners through the development of an early-stage dementia program. In addition, Lori has s facilitated many caregiver support groups.

Lori was awarded her Bachelor’s and Master’s degrees in Social Work from Indiana University in both Bloomington and Indianapolis, Indiana. Lori is a Licensed Clinical Social Worker. She is also a trained Advance Care Planning facilitator.

Cindy Shepherd, M.A.

CCC-SLP, CBIS - Speech Therapy

Cindy began her work with individuals with communication disorders in December 1980.  She has provided therapy services in the public schools, a residential facility for individuals with intellectual disabilities, early intervention programs, and an outpatient rehabilitation clinic.   In those settings, Cindy has provided therapy services to the preschool through geriatric populations.  Cindy specializes in therapy for auditory processing disorders, aphasia, traumatic brain injury, cognitive rehabilitation, childhood language disorders, speech apraxia, executive function deficits, and language processing disorders.  ​

Cindy was awarded her Bachelor’s and Master’s degrees in Speech Language Pathology from Ball State University in Muncie, Indiana.  Cindy holds the Certificate of Clinical Competence in Speech Pathology from ASHA. She is also a Certified Brain Injury Specialist with further training in cognitive rehabilitation and concussion management.  Cindy holds both a Profession Health Board License in the practice of Speech Pathology and an Indiana State Teacher’s License.

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