The Johns Hopkins Hospital
600 North Wolfe Street
Phipps 446
Baltimore, MD 21287
Division of Cerebrovascular Neurology
The Johns Hopkins University School of Medicine
Current Team Memeber
Jing Wang, MHS, BS
Lead Research Coordinator
Jing is the Lead Research Coordinator for the Johansen Lab. Jing received her MHS in Epidemiology from Johns Hopkins Bloomberg School of Public Health. Prior to joining the Johansen Lab, her research focused on how vascular risk factors contribute to neurological and cardiological related diseases and underlying potential interactions with psychological mechanisms and outcomes. She is passionate about clinical/epidemiology research and data analysis. Jing is taking the lead on the DACTs study of left atrial shape and pattern in acute ischemic stroke patients and the NOMINATE study of atrial fibrillation and dementia.
Nicole L. Williams, MS
Nicole Williams is a Project Manager for the DISCOVERY Study Statistical/Cognitive Core (http://discoverystudy.org). She received her M.S. in Clinical Psychology from Loyola University Maryland and is currently a research psychologist at the National Institute of Neurological Disease and Stroke (NINDS). Within DISCOVERY, Nicole has worked since 2020 in training, certification, and quality control monitoring of cognitive assessment examiners. Her research area of interest includes cognitive decline, specifically focused on associations with vascular risk factors. Prior to DISCOVERY, she worked for over 5 years at Johns Hopkins University enrolling acutely decompensated heart failure participants in a study examining cognitive change using an extensive battery of neuropsychological assessments.
Sandra Kong, MS, BS​
Sandra Kong is a third-year medical student at the Johns Hopkins School of Medicine. She received her B.S. in Computational Biology and M.S. in Biomedical Informatics at Stanford University. As part of the Scholarly Concentrations program, she investigated cognitive outcomes of congestive heart failure patients with the Johansen Lab. She is currently studying the association of echocardiographic features with long-term outcomes of stroke patients. Outside of lab, she has a vested interest in health equity innovation, quality improvement, and health policy advocacy.
Kate Petitt
Kate Petitt is a sophomore at Johns Hopkins University studying Neuroscience and Psychology. She is from Tampa, Florida, and is a member of the Hopkins swim team. Kate is extremely interested in studying how the brain influences different behaviors, and she hopes to go to medical school to further her studies. Outside of competitive swimming, Kate stays involved in the Hopkins community through being a learning assistant and through her membership in the Alpha Phi chapter.
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Adam Kabbaj
Adam Kabbaj is a sophomore at Johns Hopkins University pursuing a Bachelor of Science in Neuroscience. He is intrigued by the potential of neurostimulation techniques to enhance cognitive function and promote recovery in patients with neurological disorders. In addition to his academic pursuits, Adam is an Emergency Medical Technician from New York, where he provides 911 Basic Life Support services. He is deeply committed to community service, spending his free time tutoring children in Baltimore and contributing to local health initiatives aimed at underserved populations.
Meghna Kommu
Meghna is a junior at Johns Hopkins University studying Neuroscience with minor in applied math and statistics. She is a trained dancer and dance for a Hoppins dance team. She is an advocate at Hopkins Community Connection. In her free time, she loves to paint.
Estee Marcus
Estee Marcus is a junior at Johns Hopkins University studying Medicine, Science, and the Humanities with a minor in Spanish for the Professions. She is passionate about interdisciplinary research that integrates multiple fields, including neurology and cardiology, to promote comprehensive patient care. Through her research, she especially values opportunities to engage directly with patients. Estee is also a student-athlete on the Johns Hopkins Women’s Soccer Team and contributes to physical rehabilitation programs in the Baltimore community.
Katie Koo
Katie Koo is a sophomore at Johns Hopkins University studying molecular and cellular biology and public health studies. Katie is from New Jersey, and she hopes to go to medical school in the future to further her interest in neuroscience. Katie is passionate about learning about neurological disorders and how they affect different parts of the body as well. Besides studying, Katie spends her time teaching children K-12 in Baltimore and helping out at a foster children organization.
Daniel Larsen
Daniel Larsen is a sophomore at Johns Hopkins University majoring in Neuroscience with a minor in Visual Arts. Originally from Michigan, Daniel’s work as a certified nursing assistant shaped his interest in making clinical care, specifically palliative care, more compassionate and patient centered. Daniel is especially curious about how perception, memory, and aesthetics converge in the brain, and hopes to explore how neuroaesthetics can improve patient care in the future
Avi Liu
Avi Liu is an undergraduate student pursuing a BS in Neuroscience at Johns Hopkins University. She is a research assistant in the Johansen Lab, primarily working on the NOMINATE study on atrial fibrillation and dementia. Prior to joining the Johansen Lab, she worked on research projects studying the effects of potential antibody treatments of neurodegenerative disorders, such as Alzheimer’s Disease and Parkinson’s Disease, as well as a longitudinal study on the role of pituitary hormone deficiency in post-COVID fatigue.