Brooke Hazen, DNP, MSN, APRN, AGPCNP-BC, is an Adult-Gerontology Primary Care Nurse Practitioner with experience in primary care, addiction medicine, population health, and healthcare operations. Dr. Hazen is committed to providing patient-centered, evidence-based care and has extensive experience managing acute and chronic medical conditions across diverse patient populations. She is board-certified as an Adult-Gerontology Primary Care Nurse Practitioner by the American Nurses Credentialing Center.

Dr. Hazen earned both her Master of Science in Nursing and Doctor of Nursing Practice degrees from Vanderbilt University School of Nursing. Her doctoral training focused on quality improvement, executive leadership, patient safety, and healthcare cost reduction, reflecting her longstanding interest in improving healthcare systems and patient outcomes.

Throughout her career, Dr. Hazen has held clinical and leadership roles across a variety of healthcare settings. She has worked in primary care, addiction medicine, and veteran health evaluations, with expertise in comprehensive patient assessment, chronic disease management, telehealth, and interdisciplinary care coordination. During the COVID-19 pandemic, she served as Clinic Manager for Vanderbilt University Medical Center’s large-scale patient vaccination initiative, overseeing day-to-day operations and leading teams responsible for vaccinating thousands of patients.

Dr. Hazen is actively involved in professional leadership and service. She has served in a leadership role with the Middle Tennessee chapter of the Gerontological Advanced Practice Nurses Association for several years and has contributed nationally as a doctoral student consultant to the National Academies of Sciences, Engineering, and Medicine Global Forum on Health Professions Education. She has been recognized for excellence in interprofessional collaboration and was inducted into Sigma Theta Tau International Honor Society of Nursing. Currently, Dr. Hazen is on adjunct faculty at the Vanderbilt University School of Nursing where she teaches neurology to primary care students.

Gretchen E. Schlosser Covell, MD, is a neurologist with expertise in cognitive neurology and the evaluation and management of general neurology issues. Dr. Schlosser Covell is board-certified in Neurology by the American Board of Psychiatry and Neurology and has extensive experience caring for patients with migraine, tremor, Alzheimer’s disease, mild cognitive impairment, and other neurodegenerative conditions. She previously practiced with the Southern California Permanente Medical Group, where she provided comprehensive general neurologic care. In her free time, she participated in initiatives focused on cognitive health screening protocols and dementia care.

Dr. Schlosser Covell has been actively involved in professional and community efforts related to Alzheimer’s disease and cognitive disorders. She served as a member of the Alzheimer’s Project Clinical Roundtable and participated in public education and advocacy activities focused on dementia awareness. Her commitment to patient care has been recognized through multiple honors, including the Southern California Permanente Medical Group Excellence Award and Five-Star Experience Award. She is a member of the American Academy of Neurology.

Dr. Schlosser Covell has contributed to clinical research examining risk factors, biomarkers, and cognitive outcomes associated with mild cognitive impairment and Alzheimer’s disease. Her scholarly work has included studies of physical activity, sleep patterns, metabolic factors, and neuropsychological performance in patients with cognitive decline. She has authored peer-reviewed publications and presented research at national and international scientific meetings.

Dr. Schlosser Covell earned a Bachelor of Arts from Cornell University and received her medical degree from the University of Kentucky College of Medicine. She completed a Transitional Year internship and Neurology residency at Mayo Clinic Arizona.

Cherry H. Yu, MD, is a movement disorders neurologist with expertise in Parkinson’s disease, tremor disorders, dystonia, ataxia, and other complex movement disorders. Dr. Yu completed advanced fellowship training in Movement Disorders at the Medical University of South Carolina and has a strong clinical and research interest in precision medicine approaches for neurodegenerative disease. She is board-certified in Neurology by the American Board of Psychiatry and Neurology and has extensive experience in advanced therapies for movement disorders, including deep brain stimulation and botulinum toxin treatment.

Dr. Yu earned a Bachelor of Science in Chemical and Biomolecular Engineering with highest honors from the Georgia Institute of Technology before receiving her medical degree from the Medical College of Georgia. She completed an internship in Internal Medicine and Neurology residency training at the University of Colorado School of Medicine, where she was recognized with the Residency Outstanding Research Award. She subsequently completed fellowship training in Movement Disorders at the Medical University of South Carolina and served as a Clinical Instructor in Neurology.

Throughout her training and early career, Dr. Yu has been actively involved in medical education, mentoring medical students, residents, and advanced practice trainees. She has delivered invited lectures on movement disorders, Parkinson’s disease, genetics, tremor, restless legs syndrome, and related neurologic topics at local, national, and international meetings. She also has served as an ad hoc reviewer for neurological journals and has maintained active involvement in the American Academy of Neurology, the International Parkinson and Movement Disorder Society, and the National Ataxia Foundation.

Dr. Yu has received numerous honors throughout her career, including the Howard Hughes Medical Institute Summer Medical Fellowship, the American Academy of Neurology Resident Scholar Award, the National Ataxia Foundation Clinical Training Fellowship, and multiple travel and research awards related to Parkinson’s disease and movement disorders.

Erin M. Bryan, PA-C, is a certified Physician Assistant with clinical experience spanning neurology, internal medicine, and integrative medicine. Throughout her career, Ms. Bryan has provided comprehensive patient care with a strong emphasis on wellness, chronic disease management, musculoskeletal health, and patient education. She has extensive experience performing focused evaluations, interpreting diagnostic testing, and developing individualized treatment plans to improve patient outcomes.

Ms. Bryan has practiced in a variety of clinical settings, including outpatient primary care, inpatient internal medicine, and specialty wellness clinics. She has experience caring for patients with acute and chronic medical conditions and has performed a range of office-based procedures, including joint and trigger point injections, bone marrow aspirations, skin biopsies, and lumbar punctures.

In addition to her clinical practice, Ms. Bryan has been actively involved in community service and volunteer initiatives. She has supported underserved populations through international medical service work in Peru and volunteered with family shelter and children's health organizations in Tennessee and Michigan. Her commitment to patient-centered care and community engagement has remained a consistent focus throughout her professional career.

Ms. Bryan earned a Bachelor of Science in Health Professions with a minor in Psychology from Grand Valley State University and completed her Master of Physician Assistant Studies at James Madison University. Her clinical training included rotations in family medicine, internal medicine, surgery, pediatrics, obstetrics and gynecology, emergency medicine, dermatology, and psychiatry. She is certified by the National Commission on Certification of Physician Assistants (NCCPA) and has maintained licensure in Tennessee.

Madhura Joshi Layfield, MD, is an Assistant Professor of Clinical Neurology at Vanderbilt University Medical Center. Dr. Layfield specializes in neuromuscular medicine and cares for patients with disorders affecting peripheral nerves, muscles, and the neuromuscular junction. She is board-certified in both Neurology and Neuromuscular Medicine by the American Board of Psychiatry and Neurology and provides care at Vanderbilt University Medical Center and the Tennessee Valley Healthcare System Veterans Affairs Hospital.

Dr. Layfield is a member of the American Association of Neuromuscular & Electrodiagnostic Medicine and has a strong interest in the diagnosis and management of neuromuscular disorders. Throughout her training and career, she has been recognized for her commitment to compassionate, patient-centered care, including receiving the Foley Award for Patient Advocacy and Professionalism and election to the Gold Humanism Honor Society.

Dr. Layfield earned a Bachelor of Science in Biomedical Engineering, summa cum laude, from the University of Alabama at Birmingham and received her medical degree from the University of Alabama School of Medicine. She completed an internship and Neurology residency at University Hospitals Cleveland Medical Center, followed by fellowship training in Neuromuscular Medicine at The Mount Sinai Hospital in New York City. She joined the Vanderbilt faculty in 2023.