About Us
Karen M. Falla, Ph.D.
Licensed Psychologist
Clinical Neuropsychologist
Child, Adolescent, Adult, Geriatric

Dr. Falla founded Neuropsychology Consultants with a vision of bringing together outstanding clinicians offering state-of-the-art evaluation and treatment in the fields of clinical psychology and neuropsychology. She is a licensed psychologist with a specialization in Clinical Neuropsychology, focusing on the evaluation and treatment of individuals across the developmental lifespan who are experiencing cognitive, emotional, social, or behavioral difficulties. She provides services to individuals in the office on an outpatient basis and also on an inpatient basis at the Medical Center of McKinney.

In working with children and adolescents, Dr. Falla helps to enhance understanding of their functioning in several domains. With consideration of their strengths and weaknesses, she works with parents to develop a plan of intervention to help the child or adolescent fulfill their potential in multiple domains of life. Typical referral issues include ADHD, learning disabilities, Autism Spectrum Disorder, other neurodevelopmental problems, and traumatic brain injury. She also helps with emotional difficulties, including depression, anxiety, bipolar disorder, and adjustment disorder.

In working with adults, she assists with differential diagnosis of dementia and other neurologically based problems. Typical referral issues include Alzheimerís disease, Lewy body dementia, Frontotemporal dementia, Vascular dementia due to major stroke or microvascular disease, Parkinsonís disease, multiple sclerosis, brain tumor, seizure disorder, and traumatic brain injury.  She works with individuals and families to help them work toward positive emotional adaptation to life changes associated with a family memberís decline in cognitive or physical functioning.  She treats her patients with compassion and respect as they seek to understand the basis of problems they are experiencing, and discusses with them practical and accessible ways of improving their quality of life.

Dr. Falla earned her doctorate in Clinical Psychology (APA-accredited) and her masterís degree in Psychology from the University of North Texas. She earned her bachelor's degree in Psychology from Arizona State University, graduating summa cum laude. Prior to this, she earned a bachelorís degree in Computer Science from the College of Engineering and Applied Sciences at Arizona State University. Afterward, she worked for five years as a Software Engineer for Honeywell Commercial Flight Systems, collaborating with systems engineers and hardware engineers to produce flight control (autopilot) systems for commercial aircraft.

As she transitioned her analytical skills into the field of clinical psychology, she evaluated children receiving neuro-oncology services at Cook Childrenís Medical Center in preparing her dissertation, ďThe Relationship between Executive and Psychosocial Functioning in Children Treated for a Brain Tumor.Ē She had a focus on neuropsychological evaluation and treatment of both children and adults during her graduate practice with the Traumatic Brain Injury Program at the Baylor Institute for Rehabilitation in Dallas; Baylor Our Childrenís House in Dallas; and Cook Childrenís Medical Center in Fort Worth.

She furthered her specialized clinical training on internship at the APA-accredited Oklahoma Health Consortium in Oklahoma City (including rotations at the Jim Thorpe Rehabilitation Hospital, Neuropsychology Associates at the Mercy Hospital Neuroscience Institute, and the Child Study Center at the University of Oklahoma Health Sciences Center); and her postdoctoral fellowship in neuropsychology at the Center for Psychological Development in Sherman, Texas, where she conducted in-depth neuropsychological evaluations with both inpatient and outpatient populations. Inpatient settings included acute care, rehabilitation, skilled nursing, and psychiatry.

Dr. Falla currently holds privileges at the Medical Center of McKinney where she sees patients in acute care, rehabilitation, and psychiatric care. She has taught graduate and undergraduate courses at the University of North Texas. She is a member of the American Psychological Association (including Division 40: Division of Clinical Neuropsychology), the National Academy of Neuropsychology, the Texas Psychological Association, and the Collin County Psychological Association.


David F. Lerner, Ph.D.Licensed Psychologist
Clinical Neuropsychologist
Child, Adolescent, Adult, Geriatric

Dr. Lerner has a strong clinical interest in evaluation and treatment of individuals with cognitive, developmental, behavioral, social, and/or emotional difficulties. In addition to his work in our office, he currently holds privileges at the Medical Center of McKinney where he sees patients in acute care, rehabilitation, and psychiatric care. He also provides in-home neuropsychological assessment and psychotherapy for rehabilitation patients through Rehab Without Walls. 

Dr. Lerner earned his doctoral and master's degrees from the APA-accredited program in Educational Psychology at Arizona State University with a concentration in School Psychology. He completed his APA-accredited predoctoral internship at the Illinois School Psychology Internship Consortium where he worked with an ethnically and economically diverse student body. His focus there was on neuropsychological and social emotional evaluation of children and adolescents.

He went on to complete his two-year postdoctoral fellowship in neuropsychology at Neuropsychology Consultants under the supervision of Dr. Karen Falla. During his fellowship, he completed additional intensive training in clinical neuroanatomy and psychopharmacology, and he participated in the resident lecture series at the Baylor Institute for Rehabilitation in Dallas. 

Dr. Lerner had a very unique undergraduate experience. He earned concurrent bachelor's degrees in Asian Languages (Japanese) and Art History at Arizona State University and was a member of the academic honor society Phi Beta Kappa. He worked for two years in the Japanese Exchange and Teaching Program at Yasutomi and Himeji school districts, Hyogo Prefecture, where he taught at Japanese elementary and middle schools. He also taught undergraduate courses in educational psychology and educational technology while a graduate student at Arizona State. He completed his doctoral dissertation entitled The Structure of Cyber-Aggression and his master's thesis entitled Cyberbullying among Japanese and American Middle School Students; he presented the latter at AERA, British Columbia, Canada. He is currently collaborating with a Japanese colleague on a book chapter based on this research which has recently been accepted for publication.

Dr. Lerner's graduate clinical experiences include utilizing applied behavior analysis based interventions for groups of students presenting with extreme attention deficit hyperactive disorder and autism spectrum disorder. Techniques included contingency management with token economies and cognitive behavioral strategies for anxiety reduction. He is a member of the National Academy of Neuropsychology and the American Psychological Association.


Stephen Chock, Ph.D. Licensed Psychologist
Clinical Neuropsychologist
Child, Adolescent, Adult, Geriatric

Dr. Chock served as clinical neuropsychologist at Baylor Institute for Rehabilitation (BIR) in Dallas for over 17 years where he provided inpatient and outpatient rehabilitation services and neurocognitive evaluation and treatment, with an emphasis on brain injury.  He received his doctorate in counseling psychology from Ohio State University and completed an internship at Ohio State University Hospital, Department of Physical Medicine and Rehabilitation under the supervision of John D. Corrigan, ABPP - Rehabilitation Psychology.

Dr. Chock completed a second internship at Minneapolis Veterans Administration Medical Center. His postdoctoral residency in clinical neuropsychology was under the supervision of Mary Ellen Hayden, Ph.D., ABPP, at Pate Rehabilitation in Dallas. Prior to this, he earned his bachelor's degree in Human Development from the University of Hawaii in Honolulu, graduating with the highest GPA in his class.

Dr. Chock has served as an ordained associate pastor at LifePoint Church of Plano (formerly Grace Community Church) since 1991. He has served as adjunct faculty at Dallas Theological Seminary since 2005, and has supervised graduate psychology students from the University of Texas Southwestern Medical Center, University of North Texas, Texas Woman's University, and other institutions of higher education. He served as Board President at St. Timothy Christian Academy, a Christian school for students with learning differences. He provided consultation services to the psychiatrists and pediatricians at the Minerth-Meier New Life Clinic in Richardson, conducting neuropsychological, projective, personality, and vocational assessment for their inpatient, day program, and outpatient populations. In addition to his clinical expertise, Dr. Chock has a very kind and compassionate manner with his clients and their families.


Valerie Sive-Ramirez, Psy.D.Licensed Psychologist
Clinical Neuropsychologist
Child, Adolescent, Adult, Geriatric

Dr. Valerie Sive-Ramirez earned her doctorate degree from the APA-accredited counseling psychology graduate program at the University of San Francisco, which included a two-year graduate practicum at the Childrenís Health Council in Palo Alto, California. She received additional training in the diagnosis and treatment of children and adolescents at the APA-approved Southern Arizona Psychology Internship Consortium in Tucson, Arizona. She earned her masterís degree from the University of San Diego and has been licensed as a marriage and family therapist in California.

Dr. Sive-Ramirez went on to complete post-doctoral training in Clinical Neuropsychology from Fielding Graduate University. As part of this specialized training, she completed a post-doctoral fellowship at St. Maryís Medical Center, where she worked on the inpatient rehabilitation unit and conducted inpatient and outpatient neuropsychological evaluations for children and adolescents. She further refined her specialization by completing a second post-doctoral fellowship on the brain injury unit at Kaiser Foundation Rehabilitation Center.

She has worked for the Memory Center at Baylor Neuroscience Center in Dallas as well as for the Pain Management Center at Baylor University Medical Center.  In both settings, she conducted comprehensive neuropsychological evaluations and pain evaluations, provided individual and group therapy, and assisted in coordination of treatment services to gather outcome data. She provides in-home neuropsychological assessment and psychotherapy rehabilitation patients through Rehab Without Walls. She has worked with children with many different types of conditions, including ADHD, learning difficulties, developmental delay, and neurological problems.

Dr. Sive-Ramirez is committed to providing high quality evaluations and treatment.  An important objective in her clinical work is to provide each individual with an opportunity to obtain optimal functioning in daily life.  In addition to her clinical experience, she has worked in different research settings, including a study on anger management and substance abuse for the U.S. Department of Veteranís Affairs Medical Center in San Francisco. She served as adjunct faculty for Wright Institute in Berkeley, California teaching graduate-level neuropsychological assessment. She is a member of the American Psychological Association.


Katrina E. Belťn, Psy.D.           Licensed Psychologist
           Clinical Neuropsychologist
           Adolescent, Adult, Geriatric

Dr. Belťn is a clinical neuropsychologist who specializes in the cognitive assessment and rehabilitation of individuals of diverse cultural and linguistic backgrounds. Originally from New Mexico, she completed her undergraduate studies at the University of New Mexico and then pursued doctoral training in neuropsychology at Carlos Albizu University in Miami, FL. She completed internship and post-doctoral residency programs at Jackson Memorial Hospital/University of Miami Miller School of Medicine.

Dr. Belťn has been an invited speaker, presenting nationally and internationally, on topics relating to cultural identity, bilingualism, culturally informed rehabilitation, and neuropsychological assessment with non-English speakers. Specific areas of interest include traumatic brain injury, concussion, multiple sclerosis, stroke and dementia. We are very happy to have Dr. Belťn working with us!


Leslie N. Perez, Psy.D.           Postdoctoral Fellow
           Clinical Neuropsychology
           Child, Adolescent, Adult, Geriatric

Dr. Perez completed her masters and doctoral degrees in Clinical Psychology from the at the APA-accredited Philadelphia College of Osteopathic Medicine, and her bachelorís degree in Psychology and Biology from Rutgers University. Her dissertation is entitled The Effects of Coping styles and Stress Perceptions on Clinical Outcomes in Individuals with Traumatic Brain Injury in a Post-Acute Rehabilitation Program.


She went on to complete her predoctoral internship at Utah State Hospital, where she conducted neuropsychological assessments with adult, geriatric, pediatric, and forensic patients with diverse co-occurring neuropsychiatric, neurological, medical, and neurodevelopmental disorders. She developed and implemented a cognitive remediation program for adults and conducted individual and group cognitive remediation sessions for pediatric and adult patients with cognitive impairments, and conducted individual therapy using the evidence-based, comprehensive Dialectical Behavior Therapy model. At Utah State Hospital, she presented Dementia and Schizophrenia: Comorbidity and Differential Diagnostics in an Inpatient Setting.


Dr. Perez has worked in a diverse range of clinical settings during her predoctoral training. At Fairmount Behavioral Health System in Philadelphia, PA, she conducted individual therapy sessions for inpatient individuals with schizophrenia spectrum disorders, eating disorders, depression and anxiety, and personality disorders, co-facilitated group therapy sessions using Yalom-style process skills, and worked closely with trauma survivors who had suffered sexual, physical, and psychological trauma.


At Penn Medicine/Lancaster General Hospital, she conducted neuropsychological assessments for individuals referred to the Alzheimerís and Memory Care Program and co-facilitated a weekly stroke support group in the rehabilitation unit and a weekly day treatment support group for individuals with brain injury. She also conducted Spanish-speaking dementia evaluations and collaborated in the development of a Spanish speaking dementia battery intended to more accurately assess Spanish speaking patients using culturally appropriate cognitive measures.


At Temple University Hospital ĖEpiscopal Campus: Extended Acute Care Program she provided individual therapy to individuals with severe mental illness and conducted brief neurocognitive assessments with individuals with neuropsychiatric and neurodegenerative conditions.


At Devereux Foundation, she conducted individual therapy with children and adolescents who had emotional and behavioral disorders and developmental disabilities, including Autism Spectrum Disorder, ADHD, Oppositional Defiant Disorder, depression, anxiety, and self-injurious behaviors. She also participated in research which was presented at the 63rd Annual Meeting of the American Academy of Child and Adolescent Psychiatry.


At Bancroft NeuroRehab, she conducted individual therapy, group therapy, and comprehensive neuropsychological assessments for individuals who had sustained moderate-to-severe brain injury and were receiving treatment at a residential post-acute rehabilitation program. At Cumberland County Guidance Center in South Jersey she conducted initial biopsychosocial assessments, mental status exams, and suicide assessments for new clients, and carried a caseload of English and Spanish speaking children, adolescents, and adults for individual therapy services.


Dr. Perez has affiliations with several professional organizations, including the American Psychological Association, National Academy of Neuropsychology, International Neuropsychological Society, American Academy of Clinical Neuropsychology, Society for Clinical Neuropsychology (APA, Division 40), and Rehabilitation Psychology (APA, Division 22). We are very happy to have her completing her postdoctoral fellowship with us!


Clair Barefoot, Ph.D.                    Postdoctoral Fellow
                    Clinical Neuropsychology
                    Child, Adolescent, Adult, Geriatric

Dr. Barefoot completed her masters and doctoral degrees in Clinical Psychology from the CPA-accredited program at the University of Regina in the Canadian province of Saskatchewan. Her dissertation is entitled A Meta-Analysis of Neuropsychological and Subjective Cognitive Outcomes Following Adjuvant Chemotherapy, and her mastersí level dissertation is entitled Evaluation of a Self-Management Program for Older Adults with Chronic Pain. Prior to her graduate studies, she attended the University of New Brunswick and Macquarie University, completing her bachelorís degree with an Honours Thesis in psychology and a minor in Health Science.


She went on to complete her CPA-accredited predoctoral residency at the Northern Ontario Psychology Internship Consortium in Thunder Bay, Ontario. Her primary rotation was at Mental Health and Concurrent Disorders Programs/Mental Health Outpatient Programs where she conducted neuropsychological evaluations for clients with mental health concerns including schizophrenia, fetal alcohol spectrum disorder, attention deficit hyperactivity disorder, brain injury, substance use, depression, and anxiety.


She also completed a rotation at Mental Health Outpatient Programs/The Childrenís Centre where she saw children and adults for individual therapy (cognitive behavioral/acceptance and commitment /brief solution-focused therapy) and group therapy for anger management. She collaborated on case conceptualization and treatment recommendations during psychological assessments.


As part of her graduate studies at the University of Regina, Dr. Barefoot completed a neuropsychology practicum where she saw adults with concussion, traumatic brain injury, stroke, probable dementias, mood disorders, anxiety, conversion disorders, and substance use. To further her clinical training in the specialty of neuropsychology, she completed in-depth study in neuroanatomy through the National Academy of Neuropsychology.


She also completed a therapy practicum in the Counseling Services program where she provided individual therapy (cognitive behavioral and brief solution-focused therapy) to adolescents and adults with mental health concerns including mood disorders, anxiety, eating disorders and personality disorders. She worked with adults at the Mental Health & Addiction Services conducting cognitive behavioral and dialectical behavioral therapy as well as exposure based therapy, with children and their parents with referral concerns including Autism Spectrum Disorder, Fetal Alcohol Syndrome, Intellectual Disability, depression, and anxiety.


At the Psychology Training Clinic at the University of Regina, she saw adults, adolescents, and children at for both individual therapy and group therapy (Wellness Workshop). At the Stan Cassidy Centre for Rehabilitation in New Brunswick, she worked with adolescents and adults with acquired brain injuries, central nervous system tumors, and neuromuscular disorders. The focus of her work in this setting was on rehabilitation during both the acute and chronic phases of illness and injury.


In addition to working with children, adolescents, and adults, she has special areas of interest in working with geriatric populations, individuals coping with chronic pain, palliative care, and those with intellectual disabilities. She volunteered with the UNBSJ Best Buddies program that aims to help those with intellectual disabilities and served as Coordinator for the program. She has received numerous academic awards and distinctions, including The Faculty of Graduate Studies and Research (FGSR) Research Graduate Scholarships and Research Graduate Teaching Assistantships over several years.


Her past research topics include conceptualize, design, administration, and analysis of lie detection experiments including use of a polygraph, and study of older adults with chronic pain.  She maintains membership with the National Academy of Neuropsychology and the Canadian Psychological Association. We are very happy to have Dr. Barefoot completing her postdoctoral fellowship with us!


Patrick Smith, M.S.                    Clinical Extern
Clinical Neuropsychology
Child, Adolescent, Adult

Patrick is working toward his Ph.D. in Clinical Psychology from the APA-accredited clinical psychology doctoral program at the University of North Texas. He earned his bachelorís degree in Psychology with a specialty in Neuroscience from Trinity University in San Antonio. He has a special clinical and research interest in phenomenology, longitudinal trajectory, and neurobiological underpinnings of mood and thought disorders. His current research examines associations amongst circadian functioning, psychological symptoms and neurocognitive functioning.

Patrickís university work includes a fellowship teaching undergraduate students data analysis techniques and assistantships in classes in Developmental Psychology, Neurobiological Basis of Behavior, Social Psychology, Psychology of the Offender, and Experimental Methods in Psychology. His research and grant writing experience includes work as primary study coordinator of a 52-week multi-site study evaluating the efficacy and morbidity of aripiprazole and risperidone in the treatment of first-episode schizophrenia, and collaboration on study design and subject recruitment/screening on research examining mechanisms of action of transcranial magnetic stimulation in the treatment of depression. He has also worked as study coordinator at the University of Texas Health Science Center at San Antonio Department of Psychiatry, and research assistant for Psychiatric Emergency Services, Inpatient Psychiatry Unit, Clinical Psychopharmacology Lab at University Hospital. He participated in numerous research projects at Trinity University with topics including how college students reason and learn about politically charged issues, and on the neuroprotective effects of Resvertrol (an anti-oxidant compound found in red wines) on the N27 dopaminergic cell line. He has authored and co-authored numerous scientific publications and presentations on his research interests.            

Outside the field of psychology, he serves as a volunteer for Green Spaces Alliance, a local non-profit focused on conserving land around the Edwards Aquifer and fostering development of local and sustainable community gardens in low-income areas. He was a member and rush chair for Kappa Kappa Delta, has worked as a lifeguard, and was an Eagle Scout for Boy Scouts of America. We are very happy to have Patrick join us!


Jesse Smotherman, M.S.      
Clinical Extern
Clinical Neuropsychology
Child, Adolescent, Adult

Jesse is a doctoral student in the APA-accredited Clinical Psychology program at the University of North Texas. He earned his masterís degree in Psychology from UNT with a GPA of 4.0 and successful completion of his thesis entitled The Impact of Causative Genes on Neuropsychological Functioning in Familial Early-Onset Alzheimerís Disease: A Meta-Analysis. He earned his Bachelor of Science degree in Psychology from Louisiana State University.

His clinical experience includes assessment and psychotherapy at the UNT Psychology Clinic, including providing emergency services on an on-call basis. Prior to this, he worked for six years as a psychometrist for Jefferson Neurobehavioral Group in Metairie and Baton Rouge, Louisiana, where he assessed diverse patient populations ages 3 through 95 years on an inpatient and outpatient basis. This included neuropsychological evaluation of inmates at Beaumont Federal Correctional Complex in Beaumont, TX and Tangipahoa Parish Prison in Amite, LA; out-of-town assessments in

Louisiana, Texas, Mississippi, Alabama, Georgia, and Florida; in-school administrations of psychoeducational evaluations at primary, secondary, and college institutions, participation in depositions, assessment of individuals involved in Deepwater-Horizon Oil spill, monthly telemedicine evaluations in rural areas, and evaluations in hospital and in-home settings for severely disabled patients.

Jesseís experience includes work with children and adolescents diagnosed with autism spectrum disorders, attention deficit/hyperactivity disorder, schizophrenia, dyslexia, oppositional defiant disorder, pervasive developmental disorder, and obsessive compulsive disorder and with adults diagnosed with chronic pain, mood disorders, dementia, Alzheimerís disease, traumatic brain injuries, concussion, and post-traumatic stress disorder.

Jesse also served as a Care Manager for the Gulf Region Outreach Project through the School of Medicine, Department of Psychiatry at the LSU Health Sciences Center. Funding for this project was allocated to provide mental health services in primary care, federally qualified health clinics (FQHCs), and schools to those areas affected by the Deepwater-Horizon Oil Spill. In this position, his responsibilities included assessing medication responsiveness, psychological symptoms, and adherence to behavioral interventions, organizing and participating in multidisciplinary team meetings to coordinate services for patients receiving mental health services in primary care clinics, addressing barriers to treatment and providing community resources and long-term psychological referrals to patients living in areas affected by the BP oil spill and Hurricane Katrina.

Jesse has served as a teaching assistant for several coursed, including Psychophysiology, Social Psychology, Quantitative Methods, Intro to Perception and Cognition, History and Systems, Health Psychology, and General Psychology I. We are very happy to have Jesse completing an external clinical practicum with us!



We are committed to treating others with compassion and respect as we help them to more fully understand their unique characteristics and support them in seeking experiences that will enhance their quality of life.
6717 W Eldorado Parkway
Suite 110
McKinney, TX 75070

Telephone: 214-585-0584
Fax: 214-585-0586