Clinical Studies

Leading our research center in The Villages, Florida, Dr. Jeffrey Norton has more than 20 years of experience in anesthesiology and pain management and has served as Principal Investigator on more than 40 clinical trials across all phases of research.  His extensive clinical trials experience includes research studies in Alzheimer’s disease, dementia with Lewy bodies, Parkinson’s disease, nonalcoholic steatohepatitis (NASH), lumbosacral radicular pain, diabetic peripheral neuropathic pain, fibromyalgia, and osteoarthritis.  Dr. Norton graduated from Hahnemann University School of Medicine and completed both his residency in anesthesiology and his fellowship in pain management at Massachusetts General Hospital in Boston.  He is a highly respected expert in anesthesiology and pain management and has served as an Instructor in Anesthesia at Harvard Medical School.  After more than 20 years of clinical practice, Dr. Norton focused his career on clinical research and has since spent numerous years performing clinical research, looking to slow or stop the progression of neurodegenerative disorders such as Alzheimer’s disease.  Today, Dr. Norton continues to devote his full-time efforts to advancing medicine.

Leading our research center in Winter Park, Florida, Dr. Edgardo Rivera has served as Principal Investigator or Sub-Investigator on more than 40 clinical trials across all phases of research and in numerous therapeutic areas including Alzheimer’s disease, dementia with Lewy bodies, Parkinson’s disease, cervical dystonia, nonalcoholic steatohepatitis (NASH), lumbosacral radicular pain, diabetic peripheral neuropathic pain, osteoarthritis, and obesity.  Dr. Rivera is particularly experienced as Principal Investigator in clinical trials in Alzheimer’s disease.  Dr. Rivera is board certified in Emergency Medicine, is a Fellow of the American College of Emergency Physicians (FACEP), and serves as an Oral Board Examiner for the American Board of Emergency Medicine (ABEM).  He has published 29 papers on a variety of topics spanning emergency medicine, mass casualty response, systems performance, spinal injuries, cardiac arrest, and acute tachyarrhythmias.  Dr. Rivera was an Associate Professor at Michigan State University and served as Assistant Residency Director, teaching resident physicians and medical students for many years.  He also served on the editorial board of 2 prominent peer-reviewed national scientific journals for 15 years, regularly reviewing research manuscripts submitted for publication.  He has been an invited lecturer and speaker at multiple local, regional, national, and international educational and scientific meetings, from local hospital systems to large gatherings of physicians at the National ACEP Scientific Assembly.  Dr. Rivera served in the U.S. Air Force for 8 years and has over 30 years of clinical practice experience.  He is fluent in Spanish and English.

Dr. Diana Balsalobre is a Board-Certified Neurologist with over 22 years of clinical experience.  She completed her Internship and Neurology Residency in Jackson Memorial Hospital in Miami, Florida in 2000.  Following residency, she completed a fellowship in Clinical Neurophysiology with training in EEG and EMG/NCV at St. Louis University Hospital in St. Louis, Missouri.  Upon completion of her fellowship, she moved to Puerto Rico, where she worked in a private Neurology practice for 16 years.  She returned to Florida in 2016, serving as an outpatient neurologist with Advent Health Medical Group and subsequently with Neurovations Clinic before joining Charter Research in 2023.  Dr. Balsalobre has vast experience diagnosing and managing multiple neurological conditions including Alzheimer’s disease and other dementias, Parkinson’s disease, Multiple Sclerosis, migraine, and stroke.  She is fluent in Spanish and English.

Dr. Mary Quarterman is an established and highly skilled physician with over 13 years of experience.  Dr. Quarterman received her medical degree from Florida State University and completed her residency in Internal Medicine at Orlando Health.  She practiced in outpatient primary care for nine years and transitioned into clinical research as a principal investigator with Charter Research.  She is skilled in the treatment of both chronic and acute medical illness.  She is also experienced in lab review, prescribing of medications, and monitoring of adverse events.  She is fluent in medical Spanish and certified in basic life support.