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. Wu-Chen received her Bachelor's and Medical Degree from the University of Costa Rica. Prior to coming to the United States, she was trained as an ophthalmologist in Bogota, Colombia. Following her passion for neuroanatomy and neuroscience, she continued with further training in neurology at Temple University Hospital. Afterwards, she pursued fellowship training in neuro-ophthalmology at Wilmer Eye Institute, Johns Hopkins University. Dr. Wu-Chen is board certified in neurology by the American Board of Psychiatry and Neurology.

During her residency, she received several awards including the Matthew T. Moore award for best research project, and was recognized as the best teaching resident in 2008. Dr. Wu-Chen's work has been published in several peer-reviewed journals, including Ophthalmology, Journal of Neuro-ophthalmology, Pediatric Endocrinology, J AAPOS, and the British Journal of Ophthalmology, among others. In addition, she has written several book chapters in Ferri's Clinical Advisor.

Her clinical interests are headache management, multiple sclerosis, myasthenia gravis, epilepsy and different modalities of BOTOX treatments, including migraines, torticollis, blepharospasms, hemifacial spasms, and spasticity.

Dr. Wu-Chen also provides services in her sub-specialty of neuro-ophthalmology at Eye Doctors of Lancaster, where she treats patients with visual complaints that are related to the nervous system.

She is an active member of the American Academy of Neurology, North American Neuro-Ophthalmology Society, Lancaster City and County Medical Society, and the Pennsylvania Medical Society.

Dr. Wu-Chen is on staff at Penn Medicine-Lancaster General Hospital, UPMC Pinnacle Lititz and UPMC Pinnacle Lancaster. She is fluent in Spanish and Mandarin.

Outside of work, she volunteers actively in her community and enjoys spending time with her family. Dr. Wu-Chen and her husband Steve live in the Lancaster area and have two children.

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

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)

(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