Kris Herfkens, PhD, ABPP-CN


Ioan Stroescu, Ph.D., ABPP-CN


Michael Zelson, Ph.D.

Lauren C. K. Goslin, LCSW

Bret Booth, Psy.D.

Steven Erickson, Psy.D.

Mandy Kellogg

Practice Manager

Dr. Herfkens is a board certified clinical neuropsychologist in private practice in Durham, North Carolina. Her practice is focused on diagnosis and treatment of adult neurocognitive disorders, with a subspecialty focus on geriatrics and MS. In addition, she has over twenty years experience in forensic neuropsychology in both civil and criminal litigation.

Dr. Herfkens received her bachelor’s degree from Carleton College and a doctorate in clinical psychology from the University of Tulsa, where she received an American Psychological Association Dissertation Research Award. Her post doctoral fellowship in clinical neuropsychology was at the University of Alabama at Birmingham School of Medicine.

She currently volunteers with the Greater Carolinas Chapter of the National Multiple Sclerosis Society and is a past chair and current member of the North Carolina Psychology Board.

Dr. Stroescu is a board-certified clinical neuropsychologist with expertise in general adult clinical neuropsychology. He has extensive neurocognitive consultation and clinical assessment experience with dementia and a wide range of neurological disorders, in both in- and out-patient settings.

Prior to joining Triangle Neuropsychology Services Dr. Stroescu was a senior neuropsychologist at NeuroCog Trials, focusing on neuropsychological outcomes in clinical trials of CNS disorders and he continues this work on a part-time basis. Prior to that he was a faculty neuropsychologist and assistant clinical professor at Barrow Neurological Institute in Phoenix, AZ.

He obtained a B.A. in Psychology and Biology from Columbia College in Columbia, MO. He earned his M.S. and Ph.D. with a concentration in Neuropsychology from Saint Louis University. He completed a neuropsychology specialty track internship at the Memphis VA Medical Center and Semmes Murphey Clinic and a post-doctoral fellowship at Emory University School of Medicine. He has authored/co-authored peer-reviewed publications and presentations and is fluent in German and Romanian.

Michael Zelson, Ph.D is a clinical neuropsychologist who has been practicing in outpatient clinic and inpatient rehabilitative settings since 1990. His practice is focused on the neuropsychological evaluation and treatment of adult acquired brain disorders, with particular emphasis on traumatic brain injury and cognitive disorders associated with aging. He is also experienced in assessing cognitive changes due to stroke and cerebrovascular disorders, Multiple Sclerosis and Parkinson’s disease. In addition to neuropsychological evaluation, he provides cognitive-behavioral psychotherapy with expertise in adjustment to illness/disability and psychological approaches to pain management. He earned a Bachelor’s degree in Psychology from the University of Pennsylvania in 1982 and a Doctoral degree in Clinical Psychology from the University of Delaware in 1989. He received post-doctoral experience in neuropsychology at the Institute for Brain Injury Research and Training in Camden, New Jersey. He is a member of the American Psychological Association and the National Academy of Neuropsychology.

Lauren has been working at TNS since December 2006. She is the Manager of Psychometrician Services. Lauren received her BA degree at the University of the South, and her MSW at Tulane University. Before she moved to Durham, Lauren was on staff at the Children’s Bureau of New Orleans in Project Last. This work included four years as a grief and trauma counselor for children who were the survivors of a homicide victim. During her Tulane internship, she worked as a school social worker at Woodson Middle School and as a youth group leader in the CJ Peete Housing Development. Previous work has included commercial photography, and she continues an interest in fine art photography.

Bret A. Booth earned his B.A. at University of Virginia and Psy.D. at the APA-accredited American School of Professional Psychology - Washington, DC (Argosy University). He completed his post-doc training in clinical neuropsychology here in Raleigh, NC serving a primary outpatient neurology population. He has extensive experience over the past decade+ working as a clinical neuropsychologist providing assessment, diagnosis, and treatment recommendations for adult patients with cognitive complaints. Bret A. Booth currently treats cognitive difficulties in patients ages 18 and up, where he specializes in dementia, neurological disorders, neurodevelopmental conditions, chronic health problems, psychiatric illness, psychotropic medication side effects, and traumatic brain injury (note:  he has assisted the Carolina Hurricanes as part of the NHL concussion management program). He has been actively involved in research studies/clinical trials for new medications to benefit neurocognition.

Dr. Steven Erickson is a clinical neuropsychologist with expertise in general adult and geriatric clinical neuropsychology. He has extensive neurocognitive consultation and clinical assessment experience with the differential diagnosis of dementia and neurological disorders in the context of psychiatric comorbidities, in both in- and out-patient settings.

Prior to joining Triangle Neuropsychology Services, Dr. Erickson completed training rotations in pediatric neuropsychology and forensic neuropsychology. He has provided psychotherapy for individuals with substance use disorders and charges of domestic violence. He has also worked as a psychiatric technician providing brief- and milieu-based psychological services for individuals across the lifespan with developmental, behavioral, and psychiatric disorders.

He obtained a B.S. in Psychology and a B.A. in philosophy from Iowa State University in Ames, Iowa. He earned his M.A. and Psy.D. in clinical psychology with a concentration in Neuropsychology from the Illinois School of Professional Psychology. He completed an APA-accredited neuropsychology internship and APPCN-member postdoctoral residency at the Maine VA Medical Center.  He also has a B.S. in chemical engineering from the University of Arizona and has worked as a contractor studying air quality for the EPA.

Mandy is the primary point of contact at TNS for referral coordinators, scheduling, requests for records, and related information. Prior to her move to North Carolina this past spring, Mandy was the Medical Office Manager for San Jose Neurospine in the San Francisco Bay Area and responsible for three practice locations. She is a certified nursing assistant and is completing her BS in Healthcare Administration. Her prior experience also includes serving as a health unit coordinator for Intermountain Healthcare in Salt Lake City, Utah.




Fax: 919- 384-9683

Enter Account Number: