About Us

Venkatachalam Mangeshkumar, MD FAAN

Dr. Venkatachalam Mangeshkumar founded Neurology & Stroke Associates, PC in Lititz, a practice focused on treating a wide range of neurological illnesses. Dr. Mangeshkumar holds medical degrees in neurology, geriatric medicine, and internal medicine. He is one of only a handful of neurologists in Pennsylvania who are also certified in neuroimaging, specifically computed tomography and magnetic resonance imaging. He is a fellow of the American Academy of Neurology (AAN) and a committee member for the American Society of Neuroimaging (ASN).

When not treating patients or researching treatment options, Dr. Mangeshkumar enjoys listening to music, traveling, and watching cricket matches. He also enjoys learning languages and is fluent in two and comfortable with four more. He is the proud father of three children, one of whom is pursuing a career in medicine.

Thomas Jefferson University Hospital
Allegheny University Hospitals-Hahnemann

Lancaster City and County Medical Society
PA Medical Society
American Academy of Neurology

Leadership award from the National Multiple Sclerosis Society
Fellowship award from the Royal College of Physicians of Ireland

Neeraj Dubey, MD FAAN

Dr. Neeraj Dubey received his medical degree in GMC in 1989. He trained in Internal Medicine in the UK and did his neurology residency at North Shore University Hospital, NY. He subsequently did fellowship training in neuroimaging at SUNY Buffalo and cerebral-vascular disease fellowship at University of Texas, Houston.

He is Board Certified in Neurology, Vascular Neurology and NeuroImaging.

Dr. Dubey has published extensively in many leading journals. He served on the board of directors at the American Society of NeuroImaging from 2006-2012 and currently serves as the Treasurer to the society. He is currently serving on the board of directors for the IAC CT Board.

He is a fellow of the American Academy of Neurology and Assc Prof (Clinical) of Neurology at TCMC.

He has been actively involved in teaching and has been the MRI course director at the ASN meetings and lectured frequently at AAN national meetings.

Wen Ying (Helena) Wu-Chen, MD

Dr. Helena Wu-Chen received her board certification in 2009 by the American board of Psychiatry and Neurology. She practices general neurology and also has a subspecialty in Neuro-Ophthalmology, where she treats patients with visual problems that are related to the nervous system. She has published in several research journals and has written several book chapters.

On her leisure time, she enjoys spending time with her family. She is happily married and has two children. She is also fluent in Spanish and Mandarin.

Education: Wilmer Ophthalmological Institute at Johns Hopkins University, Temple University Hospital, Lankenau Hospital, University of Minnesota

Membership: American Academy of Neurology, North American Neuro-Ophthalmology Society

Dr. Wu-Chen will also be providing services in her specialty of Neuro-Ophthalmology at Eye Doctors of Lancaster.

John Bennett, PhD, RVT, FICA

Dr. Bennett is a vascular physiologist ("angiologist") and ultrasonographer. He joined Neurology & Stroke as Director of Neurovascular Ultrasound. He specializes in the use of ultrasound in the evaluation and prevention of stroke and other neurovascular disorders. He is former Co-Director of the Program for Medical Ultrasound of Wake Forest University School of Medicine where he continues to serve as co-director of the school's well known post graduate medical education courses in Neurovascular Ultrasound. He has been co-investigator on several NIH funded research studies, co-authored numerous journal articles and contributed significantly to advancements in medical ultrasound technology. He continues to lecture at conferences and symposia across the US and abroad.

Other than his work his interests include horses, traveling and hiking.

BS - Muskingum College
Masters and Doctorate Degrees – The Ohio State University

American Heart Association – American Stroke Association
American Society of Neuroimaging
International Society of Angiology (Fellow)

Robert Thompson, PA-C

Robert Thompson, PA-C joined the practice in 2016. He received his Bachelor’s in Physician Assistant Science from Pennsylvania College of Technology. He tutored organic chemistry and anatomy while in school. In his free time he enjoys traveling, fishing and spending time outdoors.

Pennsylvania College of Technology 2016

American Academy of Physician Assistants

Tatyana Bozhko, CRNP

Tatyana Bozhko, CRNP initially joined Neurology and Stroke Associates in 2015 as a Clinical Research Coordinator. She came with a background in neurology and cardiovascular research. Tatyana went back to school for her master’s to University of Pennsylvania and graduated in 2016, specializing in family medicine. In addition to seeing patients as a clinician, she continues to run our research program. She enjoys research and is passionate about educating patients on their disease process. She also teaches nursing students as adjunct faculty.

In her free time she enjoys traveling, reading, and baking. She is fluent in Russian and knows some Ukrainian.

Lancaster General College of Nursing and Health Sciences
Eastern Mennonite University
University of Pennsylvania

American Association of Nurse Practitioners
American Society of Neuroimaging

(717) 569-8773


640 East Oregon Road
Lititz, PA 17543


(717) 569-8773


Hours of Operation:

Monday - Friday: 8:00 AM to 4:00 PM