Who We Are
GEAR Leadership
Ula Hwang, MD, MPH – GEAR 1.1 and 2.1 Contact MPI
Professor of Emergency Medicine and Population Health |Medical Director of Geriatric Emergency Medicine | New York University Grossman School of Medicine
Ula Hwang is a Professor of Emergency Medicine and Population Health and Medical Director of Geriatric Emergency Medicine at the New York University Grossman School of Medicine, with an adjunct appointment at Yale School of Medicine. She is also a core investigator at the GRECC (Geriatrics Research, Education and Clinical Center) at the James J. Peters Bronx VAMC. She is the co-PI of the Geriatric ED Collaborative (GEDC), a national implementation program supported by the John A. Hartford Foundation and the West Health Institute to educate, implement, and evaluate geriatric emergency care and the PI of the National Institute on Aging funded Geriatric Emergency care Applied Research (GEAR) Network.
ula.hwang@nyulangone.org
Daniella Meeker, PhD – GEAR 1.1 MPI
Associate Professor of Biomedical Informatics & Data Science | Yale School of Medicine | Chief Research Information Officer | Yale New Haven Health System
Daniella Meeker is an Associate Professor of Biomedical Informatics & Data Science at Yale School of Medicine and Chief Research Information Officer at Yale New Haven Health System. Her research program is centered on the design, evaluation, and responsible deployment of data-driven systems that improve healthcare delivery at scale. Across her career, she has pursued a coherent scientific trajectory that has evolved from behavioral intervention trials to informatics infrastructure, federated data platforms, and, most recently, AI-enabled learning health systems governed by strong ethical and institutional safeguards.
daniella.meeker@yale.edu
Manish N. Shah, MD, MPH - GEAR 2.1 MPI
University of Wisconsin - Madison
Manish N. Shah is a practicing emergency physician as well as Professor and Chair of Emergency Medicine at the University of Wisconsin-Madison. Dr. Shah has dedicated his career to improving the care delivered to older adults suffering from acute illnesses or injuries. He works to understand why older adults travel to emergency departments to obtain healthcare, to improve the care delivered in the emergency department, and to develop and test innovative approaches of providing older adults acute illness and injury care that is safe, convenient, and effective. His work has particularly advanced the science supporting programs that use telemedicine and community-based emergency medical technicians and paramedics to care for older adults.
mnshah@medicine.wisc.edu
R. Andrew Taylor, MD, MHS (Data Core)
Professor of Emergency Medicine | Vice Chair of Research and Innovation | University of Virginia School of Medicine
R. Andrew Taylor is a Professor of Emergency Medicine and Vice Chair of Research and Innovation at the University of Virginia School of Medicine. A clinical informatics expert, his research integrates artificial intelligence with real-world healthcare delivery through cross-disciplinary collaboration. His goal is to drive AI innovation that promotes equity and delivers lasting impact across healthcare settings.
KQC5MK@uvahealth.org
Chris Carpenter, MD, MSc (Dissemination + Implementation Core)
Professor of Emergency Medicine | Vice Chair of Implementation & Innovation | Mayo Clinic Rochester
Chris Carpenter is dual-trained in Emergency Medicine and Internal Medicine and Professor of Emergency Medicine at Mayo Clinic-Rochester. He serves on the American College of Emergency Physicians Clinical Policy Committee and leads the Society for Academic Emergency Medicine Guidelines for Reasonable & Appropriate Care in the Emergency Department. His research interests include diagnostics, dementia, falls prevention, and implementation science. He is Deputy Editor-in-Chief of Academic Emergency Medicine, and Associate Editor of the Journal of the American Geriatrics Society and the ACP Journal Club of Annals of Internal Medicine. He co-led the collaboration to develop the American College of Emergency Physician/American Geriatrics Society Geriatric Emergency Department Guidelines as well as the EQUATOR Network’s Standards for Reporting of Implementation Research (StaRI) reporting guidelines.
carpenter.christopher@mayo.edu
Twitter: @GeriatricEDNews
Google Scholar: https://scholar.google.com/citations?user=mDjG2hwAAAAJ&hl=en&inst=12058184521150304743
Joan Carpenter, PhD (Partnership Core)
Associate Professor of Nursing | University of Maryland
Joan Carpenter is an Associate Professor of Nursing at the University of Maryland and a Health Scientist with the U.S. Department of Veterans Affairs. An advanced practice nurse and researcher with more than 20 years of experience in serious and complex illness, her work focuses on implementing and evaluating evidence-based palliative care in nursing homes and other long-term-care settings. Dr. Carpenter’s research works to improve dementia palliative care, advance goals-of-care conversations, and reduce disparities in care for older adults.
joan.carpenter@umaryland.edu
Josh Chodosh, MD (Partnership Core)
Professor of Medicine and Population Health | NYU Grossman School of Medicine
Joshua Chodosh is a Professor of Medicine and Population Health at NYU Grossman School of Medicine. As the Director of the Division of Geriatrics and Palliative Care at NYU Langone, he leads efforts to improve personalized, compassionate care for older adults. His clinical and research interests include dementia detection, cognitive health, functional disability, sleep disorders, hearing loss, and the use of technology to support aging populations. He leads the CDC’s BOLD Public Health Center of Excellence on Early Detection of Dementia and the NIH-funded ED-LEAD study, which is working to improve emergency and post-discharge care for people with dementia.
joshua.chodosh@nyulangone.org
Xi Chen, PhD (Approach + Biostatistics Core)
Associate Professor of Public Health (Health Policy) and Associate Professor at Institution for Social and Policy Studies | Yale School of Public Health
Xi Chen, Ph.D., is an associate professor of Public Health (Health Policy) and Economics at Yale University. He is a faculty fellow at the Yale Institution for Social and Policy Studies, Yale Claude D. Pepper Older Americans Independence Center, and Yale Alzheimer’s Disease Research Center. He co-organizes Yale Population Studies Workshop. He serves as an Editor at the Journal of Population Economics, a consultant at the World Bank, Research Associate at the National Bureau of Economic Research (NBER), and NIH’s Butler-Williams Scholar and PEPPER Scholar. His research endeavors mainly involve: (1) Economics of cognitive aging and Alzheimer’s disease and related dementias (ADRD); (2) Aging-related policy evaluations; (3) Life course environments and aging well; (4) AI for population health; and (5) Global clinical trials for ADRD and other chronic conditions.
xi.chen@yale.edu
Scott Dresden, MD, MS (Approach + Biostatistics Core)
Associate Professor of Emergency Medicine | Northwestern University Feinberg School of Medicine
Scott Dresden is an emergency physician and health services researcher dedicated to improving acute care for older adults. He is the Director of the Geriatric Emergency Department Innovations (GEDI) program at Northwestern Memorial Hospital, a Level 1 geriatric emergency department, as accredited by the American College of Emergency Physicians. His research has been funded by the NIA and PCORI, and he is currently leading a R01 funded by the Agency for Healthcare Research and Quality, in which he conducts a randomized controlled trial to measure the impact of GEDI on health services use and health-related quality of life for older adults in the ED.
sdresden@nm.org
Cameron Gettel, MD, MHS (Approach + Biostatistics Core)
Assistant Professor of Emergency Medicine |Yale School of Medicine
Cameron Gettel is an Assistant Professor of Emergency Medicine at Yale, Clinical Investigator at Yale’s Center for Outcomes Research and Evaluation, and Co-Director of the Yale Emergency Scholars Fellowship. His research advances care transitions for older adults seen in the emergency department. A 2023–2025 National Academy of Medicine/American Board of Emergency Medicine Fellow, Dr. Gettel’s work has received support from the NIH, Alzheimer’s Association, Emergency Medicine Foundation, GEAR, and other leading organizations.
cameron.gettel@yale.edu
Nicki Hastings, MD (Dissemination + Implementation Core)
Professor of Medicine & Population Health Sciences; Director, Center of Innovation to Accelerate Discovery & Practice Transformation (ADAPT) Duke University School of Medicine & Durham VA Health Care System
William Hung, MD, MPH (Measurement Core)
Professor of Geriatrics & Palliative Medicine | Mount Sinai
william.hung@mssm.edu
Mark Iscoe, MD, MHS (Data Core)
Assistant Professor of Emergency Medicine and Biomedical Informatics | Yale University
Mark Iscoe is an Assistant Professor of Emergency Medicine and Biomedical Informatics and Data Science at Yale School of Medicine. His research focuses on applying informatics techniques including real-world data analysis, natural language processing, and predictive modeling to various aspects of emergency care, with a focus on clinical decision-making in areas of diagnostic uncertainty or practice variation.
mark.iscoe@yale.edu
Raymond Kang, MA (Approach + Biostatistics Core)
Team Leader Database, Center for Community Health | Northwestern University
raymond-kang@northwestern.edu
Ricardo Osorio, MD (Approach + Biostatistics Core)
Associate Professor of Psychiatry | NYU Grossman School of Medicine
Ricardo Osorio is an Associate Professor of Psychiatry at NYU Grossman School of Medicine. His research investigates how age-related changes in sleep affect brain health and contribute to Alzheimer’s disease and related dementias, late-life depression, and obstructive sleep apnea. Through longitudinal, community-based studies, he examines how disrupted sleep may accelerate amyloid and tau pathology. As Director of the Biomarker Core at the NYU Alzheimer’s Disease Research Center, Dr. Osorio oversees rigorous biospecimen collection, analysis, and biomarker-assay development to support earlier detection and prevention of neurodegenerative disorders.
ricardo.osorio@nyulangone.org
Jaime Ramos Cejudo, PhD (Approach + Biostatistics Core)
Assistant Professor of Psychiatry and Neurology | NYU Grossman School of Medicine
Jaime Ramos-Cejudo is an Assistant Professor of Psychiatry and Neurology at NYU Grossman School of Medicine. His research examines why certain individuals develop Alzheimer’s disease, with a focus on vascular and inflammatory dysfunction as potentially modifiable drivers of risk. Using longitudinal clinical and biomarker data, his work investigates the roles of vascular integrity, platelets, and innate immunity in Alzheimer’s-related changes. Dr. Ramos-Cejudo also studies how genetic, psychiatric, cardiometabolic, psychosocial, and behavioral factors shape these associations.
jaime.ramoscejudo@nyulangone.org
Narges Razavian, PhD (Data Core)
Associate Professor of Population Health and Radiology | NYU Grossman School of Medicine
Narges Razavian is an Assistant Professor of Population Health and Radiology at NYU Grossman School of Medicine. She applies machine learning and artificial intelligence to large-scale electronic health record, imaging, and genomic datasets to predict preventable clinical events, identify undiagnosed conditions, and discover disease subtypes and biomarkers. Her research aims to advance more precise, data-driven care through rigorous predictive analytics and open-source model development.
narges.razavian@yale.edu
Henry Rusinek, PhD (Data Core)
Professor of Radiology and Psychiatry | NYU Grossman School of Medicine
Henry Rusinek is a Professor of Radiology and Psychiatry at NYU Grossman School of Medicine. Dr. Rusinek focuses on developing advanced image-analysis and modeling tools that enhance the value of high-resolution MRI, CT, and PET imaging for clinical research. His key areas of interest include compartmental modeling from dynamic imaging data, image coregistration and segmentation algorithms, and quantitative analysis of image texture.
henry.rusinek@nyulangone.org
GEAR 1.0 Grantees
Scott Dresden, MD, MS
Associate Professor of Emergency Medicine | Northwestern University Feinberg School of Medicine
Dr. Dresden was awarded a Geriatric Emergency Care Applied Research (1.0) Network Grant for his project titled, “Identifying Older Adults with Delirium in the Emergency Department: Risk Factors and Phenotypes” at Northwestern University.
Cameron Gettel, MD, MHS
Assistant Professor of Emergency Medicine | Yale University School of Medicine
Dr. Gettel was awarded a Geriatric Emergency Care Applied Research (1.0) Network Grant for his project titled, “A health equity assessment of What Matters to older adults and patient-perceived success of ED care Transitions” at Yale University.
Rachel Skains, MD, MSPH
Assistant Professor of Emergency Medicine | University of Alabama Heersink School of Medicine
Dr. Skains was awarded a Geriatric Emergency Care Applied Research (1.0) Network Grant for her project titled, “Impact of Potentially Inappropriate Medications Prescribed at Emergency Department Discharge on Geriatric Patient-Level Outcomes” at the University of Alabama.
GEAR 2.0 Grantees
Michelle A. Fischer, MD, MPH | 2024-2025
Associate Professor of Medicine, Department of Emergency Medicine | The Pennsylvania State University Milton S. Hershey Medical Center
Dr. Fischer was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant. She worked with Dr. Wright on their project titled, “Penn State Emergency Medicine CarES: Care-partner Evaluation and Sourcing in the ED” at the Pennsylvania State University Milton S. Hershey Medical Center.
Adrian Haimovich, MD, PhD | 2024-2025
Assistant Professor, Emergency Medicine | Harvard Medical School | Beth Israel Deaconess Medical Center
Dr. Haimovich was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for his project titled, “Feasibility of a stakeholder-informed sleep hygiene intervention for persons living with dementia in the Emergency Department (SLEEP-ED)” at the Beth Israel Deaconess Medical Center.
Michelle P. Lin, MD, MPH, MS | 2024-2025
Associate Professor, Department of Emergency Medicine | Stanford University
Dr. Lin was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for her project titled, “Functional and Cognitive Outcomes and Recovery after Emergency Department Visits among Older Adults with Dementia (FACTOR-ED)” at the Board of Trustees of the Leland Stanford Junior University.
Rollin M. Wright, MD, MS, MPH | 2024-2025
Associate Professor of Medicine, Department of Emergency Medicine | The Pennsylvania State University Milton S. Hershey Medical Center
Dr. Wright was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant. She worked with Dr. Fischer on their project titled, “Penn State Emergency Medicine CarES: Care-partner Evaluation and Sourcing in the ED” at the Pennsylvania State University Milton S. Hershey Medical Center.
Anita Chary, MD, PhD | 2023-2024
Assistant Professor of Emergency Medicine | Baylor College of Medicine
Dr. Chary was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for her project titled, “A Qualitative Study of Health Priorities and Emergency Department Communication with Black and Hispanic Persons Living with Dementia and Care Partners” at Baylor College of Medicine.
Elizabeth Goldberg, MD, ScM | 2023-2024
Associate Professor of Emergency Medicine | University of Colorado School of Medicine
Dr. Goldberg was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for her project titled, “Modifying the GAPcare Fall Prevention Intervention with Patients with Cognitive Impairment and Their Caregivers” at University of Colorado School of Medicine.
Justine Seidenfeld, MD | 2023-2024
Attending Physician, Department of Emergency Medicine; Core Investigator, Center for Innovation to Accelerate Discovery and Practice | Durham VA Health Care System
Dr. Seidenfeld was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for her project titled, “Characterizing Emergency Department Disposition Conversations for Veterans with Dementia Using Direct Observations” at the Durham VA Medical Center.
Brock Daniels, MD, MPH | 2022-2023
Assistant Professor of Emergency Medicine | Weill Cornell Medicine
Dr. Daniels was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant for his project titled, “Using Mobile Integrated Health and Telehealth to Perform In-Home Fall-Risk Reduction among Persons Living with Dementia after a Sentinel Emergency Department Encounter” at Weill Cornell Medicine.
Cameron Gettel, MD, MHS | 2022-2023
Assistant Professor of Emergency Medicine |Yale School of Medicine
Dr. Gettel was awarded Geriatric Emergency Care Applied Research (2.0) Network Grant for his project titled, “ED-to-community care transitions for persons living with dementia and care partners: development, implementation, and pilot testing of a novel artificial intelligence + care coach intervention” at Yale School of Medicine.
Awards: Dr. Gettel received the 2023 AGS Health in Aging Foundation New Investigator Award.
Alexander S. Lo, MD, PhD | 2022-2023
Assistant Professor of Emergency Medicine | Northwestern University Feinberg School of Medicine
Dr. Lo was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant. He will work with Dr. McHugh on their project titled, “Improving Emergency Department Care and Care Transitions: Perspectives of Persons Living with Dementia and their Care Partners” at Northwestern University.
Megan McHugh, PhD | 2022-2023
Associate Professor of Emergency Medicine | Northwestern University Feinberg School of Medicine
Dr. McHugh was awarded the Geriatric Emergency Care Applied Research (2.0) Network Grant. She will work with Dr. Lo on their project titled, “Improving Emergency Department Care and Care Transitions: Perspectives of Persons Living with Dementia and their Care Partners” at Northwestern University.
Jacqueline Sandoval, MS | 2023-2025 – Diversity Supplement Scholar
Research Associate 1, Department of Emergency Medicine | Yale University
Ms. Sandoval was awarded an NIA Diversity Supplement under the Geriatric Emergency Care Applied Research (2.0) Network Grant for her project titled, “Discharge care transitions for patients with dementia: a qualitative study of Hispanic patients’ and families’ experiences in the Emergency Department” at the Yale School of Medicine.