The VA Quality Scholars program is known for its robust research and quality improvement programs and close collaborations with Vanderbilt University and its vast array of resources.  We leverage resources within our VA, across the VA nationally, and those available through our academic affiliate (Vanderbilt), including the Institute for Medicine and Public Health, the Center for Health Services Research,  the Center for Clinical Quality and Implementation Research, the Center for Health Behavior and Health Education, the Department of Biomedical Informatics, the Vanderbilt Epidemiology Center, the Center for Surgical Quality and Outcomes Research, the Center for Quality Aging, the Schools of Management and Education, and the nationally recognized Precision Medicine Initiative and Population Health Initiative, among many others.

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Current VA Quality Scholars

1st Year

Johnson Wali Johnson, MD

Dr. Johnson earned a Bachelor of Science in Biology at Mercer University in 2011. He then graduated from Morehouse School of Medicine in 2016. He is currently a general surgery resident at Vanderbilt University Medical Center pursuing a career in solid organ transplantation. His interests are in perioperative patient optimization using a patient focused model.


Staub Milner Staub, MD

Dr. Staub is an infectious diseases physician with a passion for antimicrobial stewardship, particularly in the outpatient setting. She completed her infectious diseases fellowship at Vanderbilt University Medical Center in 2019. During her infectious diseases fellowship, she was names as an inaugural Leaders in Epidemiology, Antimicrobial Stewardship and Public Health (LEAP) fellow, collaborating with the Tennessee Department of Health to evaluate the state's outpatient antibiotic prescribing. She finished her internship and residency in internal medicine at the University of Washington in 2017, serving as Chief Resident of Quality and Safety at the VA Puget Sound in Seattle, Washington 2016-2017.

Wethman Jenny Werthman PhD, MBA, RN

Dr. Werthman earned a Bachelor of Science in Nursing from the Johns Hopkins University School of Nursing, a Master of Science in Health Services Leadership and Management from the University of Maryland, a Master of Business Administration from the University of Baltimore, and her PhD in Nursing Science from the Vanderbilt University School of Nursing. She has broad experience in nursing and healthcare leadership. Her research interests focus on organizational concerns including patient safety, organizational systems, and hospital workforce.

2nd Year

 Clouse Morgan Clouse, DNP, APRN, FNP-BC

Dr. Clouse is a Postdoctoral Quality Improvement Fellow who received her DNP as a family nurse practitioner at Belmont University in Nashville in 2018. She is focusing on quality improvement and patient safety to improve healthcare for veterans. Her work focuses on addressing antimicrobial stewardship on a systemic level through behavioral interventions. Dr. Clouse currently practices as a nurse practitioner in the Infectious Disease Clinic at Tennessee Valley Healthcare System where she deals with complex infections and HIV focused care.

Gretchen-Edwards-350x400.jpgGretchen Edwards, MD

Dr. Edwards earned a Bachelor of Science from Georgetown University and her medical degree from Vanderbilt University School of Medicine. She is currently a General Surgery resident at Vanderbilt University Medical Center and is conducting her two years of research in the VA Quality Scholars Program. She is interested in Surgical Oncology with a focus on quality metrics Veterans diagnosed with colorectal cancers.

Sarah-Homann-350x400.jpgSarah Homann, MD

Dr. Homann is a board-certified internist and rheumatologist. She earned a Bachelor of Science from Louisiana State University in 2006 and completed medical school at Texas Tech University Health Sciences Center in 2010. She then completed her internal medicine residency and rheumatology fellowship at McGovern Medical School, formerly known as the University of Texas Health Sciences Center at Houston. She came to Nashville to participate in the VA Quality Scholars program at the Tennessee Valley Healthcare System, Nashville campus. She holds an adjunct position as an Instructor of Medicine in the Division of Rheumatology and Immunology at Vanderbilt University Medical Center. She is interested in medication safety and preventive care in patients with rheumatologic disorders.

Caroline-Lassen-Greene-350x400.jpgCaroline Lassen-Greene, PhD, MS

Caroline Lassen-Greene is a postdoctoral fellow in the VA Quality Scholars program.  Her interests are in improved detection of cognitive impairment in aging populations, cognitive rehabilitation, and interdisciplinary care to promote quality of life in patients and caregivers. She completed a master’s degree in neuroscience at Tulane University and a doctorate in clinical psychology at the University of Alabama at Birmingham, with an emphasis in health and rehabilitation psychology. She has broad experience in neuropsychological research through her work with the UAB Center for Translational Research on Aging and Mobility, Johns Hopkins Hospital Medical Psychology division, and the Critical Illness, Brain Dysfunction, and Survivorship (CIBS) center at VUMC.

3rd Year

Lewis_Jennifer VU photo 08.08.2017.jpgJennifer Lewis, MD

Dr. Lewis earned a Bachelor of Science from the George Washington University School of Public Health and Health Sciences in 2004. She worked at the National Cancer Institute for two years in a core laboratory focused on antibody/protein purification and cancer assay development as part of the NIH Post-baccalaureate Intramural Research Training Award program. She earned a Master in Physiology and Biophysics from Georgetown University in 2007 and worked at the Cancer Project (a nonprofit focused on nutrition for cancer patients) as her master’s practicum. She graduated from the George Washington University School of Medicine in the research track in 2011 and completed her internal medicine internship and residency at Wake Forest University in 2014.