Neurology

Paula Guerrero de Luna, MD

Paula Guerrero de Luna Valverde, MD

Assistant Clinical Research Coordinator

Paula earned her medical degree from Universidad Peruana Cayetano Heredia in Peru. She joined the ALBA Lab as a research assistant on the Multitudes project and is currently working as an assistant clinical research coordinator at the Dyslexia Center.

Meghan Johnson

Meghan Johnson, BS

Assistant Clinical Research Coordinator

Meghan earned her Bachelor of Science degree from UC Irvine in June 2025. While at UC Irvine, she worked with Dr. Aaron Bornstein studying decision-making and memory in older adults.

Currently, she serves as an Assistant Clinical Research Coordinator in Dr. David Perry’s lab. Her research interests include studying neurodegenerative diseases and their effects on decision-making and memory.

Miranda Calacsan

Assistant Clinical Research Coordinator

Miranda graduated from UC Berkeley in 2023 with a Bachelor of Arts in psychology. She previously worked at the Berkeley Psychophysiology Lab, where she studied the emotions, health, and relationship outcomes of caregivers of people with dementia. Now at the Memory and Aging Center, she works on the Frontotemporal Dementia: Genes, Images, and Emotions study. In the future, Miranda plans to attend medical school.

Nilgoun Bahar, PhD

Nilgoun Bahar, SLP, PhD

Postdoctoral Scholar

Nilgoun Bahar, SLP, PhD, is a postdoctoral research scholar in the ALBA Lab at the UCSF Memory and Aging Center, where she works primarily on the Dyslexia Project. She earned her PhD in experimental psychology from the University of Oxford’s Brain, Speech, and Language Lab and holds a clinical master’s degree in speech-language pathology from the University of Toronto. She completed her clinical residency at the Hospital for Sick Children (SickKids) in Toronto.

Jessica Buxton

Jessica Buxton, BA

Assistant Clinical Research Coordinator

Jessica is a research coordinator in Dr. Joel Kramer’s lab, working primarily on the MarkVCID study. She graduated with a BA degree in Neurobiology from UC Berkeley in May of 2024 and hopes to continue pursuing her interests in neurodegenerative diseases as well as becoming a neurosurgeon.

Julien van den Berg, BA

Clinical Research Coordinator

Julien is a clinical research coordinator in the UCSF Alzheimer's Disease Research Center housed in the Memory and Aging Center.

Ida Shibiru, BS

Assistant Clinical Research Coordinator

Allison Hughes, BS

Research Study Coordinator

Allison graduated from Santa Clara University with a Bachelor of Science degree in psychology and double minors in biology and urban education. She is passionate about rehabilitation sciences and plans to pursue a career in physical therapy.

Outside of the Boxer Lab, she enjoys hiking, playing tennis, and pickleball.

Julian M. Siebert, PhD

Postdoctoral Scholar

Dr. Siebert is a quantitative researcher interested in linguistically equitable measurement in education and its influence on multilingual students’ educational trajectories. He is a Postdoctoral Scholar with UCSF’s Multitudes Project where he works on building a linguistically fair reading screener for Californian public schools. 

He completed his PhD degree in Developmental and Psychological Sciences and Education Data Science at the Stanford Graduate School of Education, under the supervision of Guillermo Solano-Flores.

Nick Slater, MPA, BA

Clinical Research Supervisor

Nick Slater is a Clinical Research Supervisor at the UCSF Memory and Aging Center where he he oversees studies related to the NIH-funded program project grant on frontotemporal dementia (the FTD PPG), ensuring compliance and operational efficiency while contributing to innovative research initiatives and fostering collaborative environments.

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