People

Marcus Piattoni, BS

Assistant Clinical Research Coordinator

Marcus is a recent Loyola University Chicago graduate who majored in Neuroscience and minored in Bioethics.

Stefanie Piña Escudero

Stefanie Pina Escudero

Graduate Student

Stefanie Piña Escudero is a geriatrician working to understand and reduce the impact of social vulnerability on older adults with cognitive impairment. She is collaborating with the Multi-Partner Consortium to Expand Dementia Research in Latin America to develop a better understanding of dementia in the region with a special focus on social factors such as mistreatment.

Stefanie received her medical school training from the National University of Mexico where she completed her training in Geriatrics. She received her Internal Medicine training from La Salle University.;

Pedro Pinheiro-Chagas, PhD

Assistant Professor

Pedro Pinheiro-Chagas, PhD, studies the neural architecture and dynamics of human intelligence, focusing on symbolic cognitive systems, such as mathematics and language. His research program aims at understanding how these systems develop and decline and how we can help.
 

Mariah Pospisil, MEd

Learning Interventions Applied Research Manager

Mariah L. Pospisil, MEd, is a lifelong educator and advocate for students with dyslexia. After receiving her AB degree in Psychology from Harvard College, Mariah earned her teaching credential and Master of Education as an Education Specialist, Mild/Moderate from Notre Dame de Namur University. As a teacher, instructional coach, and school leader, Mariah focused on implementing instructional and social-emotional interventions to support students with dyslexia throughout their K–12 educational journeys.

Katherine Possin, PhD

John Douglas French Alzheimer’s Foundation Endowed Professorship
Professor

Dr. Possin’s research program is focused on improving the detection, diagnosis and care for people with neurodegenerative disease. She has long-standing interests in understanding the cognitive impairments and their neural bases in neurodegenerative diseases including Alzheimer’s disease, Lewy body disease, Huntington’s disease, chronic traumatic encephalopathy and frontotemporal lobar degeneration.

Aja Powe

Assistant Clinical Research Coordinator

Caroline Prioleau

Writer & Designer

Caroline Prioleau writes and designs content for the Memory and Aging Center and the Global Brain Health Institute. She is interested in using design and technology to share complex information and facilitate collaborations across clinical, research and non-medical groups. She also co-leads an oral history project, hear/say, that focuses on collecting personal stories about the experience of aging, dementia and caregiving.

Igor Prufer Q C Araujo, MD

Behavioral Neurology Clinical Fellow

Igor Prufer Q.C. Araujo obtained his MD degree at the Federal University of Rio de Janeiro. He completed his neurology residency at Texas Tech University in Lubbock Texas being the chief resident in his final year of training. His current research interests include the benefits of multilingualism to cognitive reserve, the neural basis of decision making and socioeconomic factors affecting dementia care.

Pongpat Putthinun, PhD

Postdoctoral Fellow

Pongpat Putthinun is a health economist and postdoctoral scholar in the UCSF Memory and Aging Center. He joined the Decision Lab team, led by Dr. Winston Chiong, and is currently working on a project aimed at understanding how genetic predispositions to frontotemporal dementia influence decision-making in the pre-symptomatic phase. Through neuroeconomic methods, the research seeks to identify incidents of early impaired judgment that could lead to early intervention strategies to decelerate the onset of frontotemporal dementia.

Gil Rabinovici, MD

Professor

Dr. Gil Rabinovici holds the Edward Fein and Pearl Landrith Distinguished Professorship in Memory & Aging in the UCSF Department of Neurology. He received his BS degree from Stanford University and MD from Northwestern University Medical School. He completed neurology residency (and chief residency) at UCSF and a behavioral neurology fellowship at the UCSF Memory and Aging Center (MAC), where he cares for patients with cognitive disorders.

Liya Rabkina, MSc

Genetic Counselor

Liya Rabkina is a licensed and board-certified genetic counselor at the Memory and Aging Center. She graduated from Northwestern University's master’s program in genetic counseling in 2020 and became board-certified later that same year. In 2024, Liya finished a research fellowship through a collaboration between Northwestern University and the University of Pennsylvania, while also earning a master's certificate focused on advancing research training for genetic counselors. She has experience in oncology and preimplantation genetic testing (infertility genetics).

Siddarth Ramkrishnan, BA

Assistant Clinical Research Coordinator

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