About Our Team
Our team of leading neurologists and healthcare professionals is dedicated to making the latest advancements in neuroscience accessible to everyone. Whether you're seeking preventive care, managing a neurological condition, or simply curious about optimizing your brain health, we're here to guide you.
From advanced diagnostic tools to innovative treatments, we bring the latest developments in neurology directly to our patients. Our commitment to excellence and personalized care sets us apart in the field of brain health.
Executive Team
Meet our leadership team, bringing decades of experience in healthcare innovation and neurology.
Robert Colton, MD
Co-founder & Chairman
Robert Colton, MD is the founder of MDVIP, the country's largest concierge medicine company. After selling MDVIP, Dr. Colton co-founded ClearlyDerm and now leads Thema Brain Health to address the tremendous need for preventive neurology. With over 30 years as a physician, Dr. Colton holds an MD from The University of Miami School of Medicine and a BS from the University of Pennsylvania.
Seth Harlem
Co-founder & Chief Executive Officer
Seth Harlem is the co-founder and CEO of Thema Brain Health. Prior to founding Thema, Seth was the co-founder and CEO of Taithera, a biotechnology company developing novel bone targeted treatments. Seth also served as an advisor to PrescriberPoint, a technology spinout of Eli Lilly. Seth holds an MBA from Columbia University and BA from Trinity College.
Sam Lehr
Co-Founder & Chief Strategy Officer
Sam Lehr is an experienced entrepreneur and attorney. Prior to joining forces with Dr. Robert Colton and Seth Harlem to start Thema Brain Health, Sam was the Founder of Muchomas Chocolate, a mission driven company. Before entering the world of mission driven entrepreneurship, Sam was an attorney with Cleary Gottlieb Steen & Hamilton LLP. Sam holds both a JD and BA from The University of Pennsylvania.
Clinical Team
Our clinical experts bring extensive experience in neurology and patient care to deliver exceptional healthcare services.
Lorin Graef, MD
Chief Medical Officer
Dr. Graef is a neurologist with over 25 years of experience treating patients with cognitive disorders. He is a graduate of Brown University and Stanford Medical School and completed his medical training at Harvard Medical School and Johns Hopkins University.
Nicole Hughes, APRN
Neurology Nurse Practitioner
Nicole Hughes is a Board-Certified Acute Care Nurse Practitioner with a specialization in Neuroscience. She holds an MSN from Rush University and a BSN from University of Wisconsin. Her entire advanced practice career has been focused on treating patients with chronic neurological disorders to help them achieve their best quality of life.
Medical Advisors
Our advisory team provides strategic guidance and expertise to enhance our clinical capabilities and patient outcomes.
Joseph Ouslander, MD
Advisor
Professor of Geriatric Medicine and Chair, Department of Integrated Medicine, Charles E. Schmidt College of Medicine, Florida Atlantic University. Dr. Ouslander holds an MD from Case Western Reserve University, and a BA from Johns Hopkins University.
Sasha Rackman, MD
Advisor
Assistant Professor of Geriatric Medicine at FAU's College of Medicine, and serves as the Director of the Geriatrics and Healthy Aging Thread in the College of Medicine's curriculum. Dr. Rackman received his undergraduate degree from University of Wisconsin-Madison and his medical degree from Tel Aviv University's Sackler School of Medicine.