TEAM BIOS

Dr. Kellyann Niotis

Dr. Kellyann Niotis founded Preventive Neurology Practice in 2024 in New York City. She is the world’s first fellowship-trained preventive neurologist. She completed her medical internship and neurology residency training at NewYork-Presbyterian/Weill Cornell Medicine, where she served as Chief Resident and the inaugural McGraw Fellow in Neurology Research, followed by a fellowship in movement disorders at the Icahn School of Medicine at Mount Sinai.

Dr. Niotis is a Clinical Assistant Professor of Neurology at Weill Cornell Medicine and the Director of Parkinson’s and Lewy Body Dementia Prevention Research at the Institute for Neurodegenerative Diseases (IND) in Florida, where her work focuses on early detection tools and personalized risk reduction strategies.

Previously, Dr. Niotis led the preventive neurology program at Early Medical, and oversaw the nation’s first Alzheimer’s Prevention Clinic at New York-Presbyterian/Weill Cornell, where she launched research initiatives for Parkinson’s and Lewy Body Dementia prevention. Her research has been published in Neurology, Nature Mental Health, Frontiers in Aging Neuroscience, Aging & Disease, Movement Disorders, Journal of Alzheimer’s Disease, Alzheimer’s & Dementia, and the Journal of the Prevention of Alzheimer’s Disease, and presented at national and international conferences.

Dr. Niotis is passionate about advancing the field of preventive neurology—not only through clinical care and research but also through advocacy for policy change and expanding access to education and treatment. Her expertise has been featured in media outlets such as CNN and NBC, and she has received numerous honors and awards recognizing her work.

Hollie Hristov, FNP

Hollie Hristov is a Family Nurse Practitioner with a specialization in Preventive Neurology, and one of the first nurse practitioners in the U.S. to be formally trained in this innovative and rapidly growing field. Her work centers on helping individuals understand and reduce their personal risk for cognitive decline through science-backed, proactive care. Hollie began her career at Weill Cornell Medicine in New York City, where she trained alongside leaders in the field of Alzheimer’s prevention. There, she contributed to groundbreaking work at the Alzheimer’s Prevention Clinic and served as Director of Clinical Operations for the Women’s Brain Initiative—two pioneering programs focused on early detection and intervention for neurodegenerative conditions.

Over the years, Hollie has developed a deep expertise in creating personalized care plans that integrate medical risk factors, lifestyle, and genetics to support long-term brain health. Her approach combines the latest research in neurology with a compassionate, patient-centered model of care that empowers people to take charge of their cognitive future. She currently serves as a research consultant for the Institute of Neurodegenerative Diseases (IND) in Florida, where she helps translate cutting-edge findings into meaningful clinical strategies.

Through her work, Hollie remains deeply committed to making preventive neurology more accessible, practical, and personalized—so that people at every stage of life can feel informed, supported, and hopeful about their brain health journey.

Beth Lewis

Beth Lewis is a movement specialist whose approach blends artistic mastery and scientific rigor. Her career began on stage, touring internationally with the renowned dance company Pilobolus after receiving her BFA in Dance Performance. She recently graduated with an MS in Kinesiology with a focus on Aging and Exercise.

Beth is a respected figure in the field of longevity medicine and preventive neurology, synthesizing cutting-edge, researched-based exercise protocols with real-life performance. Her work gained widespread recognition through her collaboration with Dr. Peter Attia, designing bespoke exercise programs featured in his best-selling book, Outlive.

Beth co-founded Matriarch, an online fitness app for the climacteric phase of life. She is also the founder of Beth Lewis Moves, an intergenerational fitness community which integrates the latest aging research and accessible, effective training for all.

Additionally, Beth brings her expertise to elite performers. She was Brendan Fraser’s movement coach for his Oscar-winning performance in The Whale, and she prepared Hugh Jackman for his return to the role of Wolverine at age 55. She also choreographed Jackman’s viral jump rope session at Radio City Music Hall. Most recently, she designed body composition training for Austin Butler in Darren Aronofsky’s Caught Stealing (2025).

Whether working with Hollywood actors, academic researchers, or everyday movers, Beth Lewis remains at the forefront of human performance, aging science, and lifespan enhancement.