General Internal Medicine, Geriatrics & Palliative Care Faculty & Leadership

Dr. Kathryn Anderson is a board-certified internal medicine physician. Dr. Anderson's interests include preventive care, cancer screenings, chronic disease management -including high blood pressure, high cholesterol, and diabetes- and the diagnosis and treatment of acute conditions and illness. 

Dr. Ben Clyburn is a nationally recognized leader in graduate medical education and clinical teaching, currently serving as Professor and Chair of the Department of Medicine. In his role as chairman, Dr. Clyburn oversees the clinical, education, and research programs of the department, which consists of 10 divisions and is the largest at the MUSC College of Medicine.

A faculty member since 1997, Dr. Clyburn has played a transformative role in shaping internal medicine education at MUSC for over two decades.

During his career at MUSC, Dr. Clyburn has held numerous leadership roles, including Program Director for the Internal Medicine Residency; Secretary, Vice President, and President of the Medical Staff; Associate Dean for GME-Faculty Development; Vice Chair for Graduate Medical Education; Senior Associate Dean for GME and CME; and Designated Institutional Official (DIO) for GME. He was appointed Chair of the Department of Medicine in 2021 after serving as Interim Chair in 2020.

He has served on the Nonprescription Drugs Advisory Committee for the U.S. FDA and served eight years on the ACGME Review Committee for Internal Medicine. Dr. Clyburn is a Fellow of the American College of Physicians and an engaged member of national organizations such as SGIM and APDIM. He currently holds the Boyle Endowed Chair in General Internal Medicine, supporting his continued work in education and geriatric care.

A respected mentor and educator, Dr. Clyburn has received multiple awards including the Golden Apple Award, the Michael E. Assey Award for Outstanding Teaching, and ongoing recognition in Best Doctors in America.

A graduate of MUSC (M.D., 1989), Dr. Clyburn completed his internal medicine residency and chief residency at Wake Forest before holding faculty and leadership roles at the University of Texas Medical Branch University of Texas, Galveston prior to joining MUSC.

Dr. Kimberly Davis is the Director of the Division of General Internal Medicine, Geriatrics and Palliative Care at MUSC, where she also serves as Professor of Medicine and Vice Chair for Clinical Affairs in the Department of Medicine. A nationally recognized leader in academic medicine, Dr. Davis has made significant strides in clinical care, education, and healthcare informatics throughout her 27-year tenure at MUSC. Since joining MUSC in 1997, she has held numerous leadership roles across the institution and currently serves as Associate Chief Medical Information Officer (CMIO) and Informatics Medical Director for MUSC. In 2024, she was appointed the Allen H. Johnson Endowed Chair in General Internal Medicine.

A leader in clinical innovation, Dr. Davis helped establish University Internal Medicine (UIM) as a core continuity clinic for internal medicine residents, now serving over 43,000 outpatients annually. She spearheaded UIM’s certification as one of MUSC’s first Patient-Centered Medical Homes and launched the Rapid Access Clinic for same-day employee care. In informatics, she has overseen the successful implementation of Epic and led clinical quality improvement initiatives as Associate CMIO. As Clinical Vice Chair, she has driven improvements in operations through Project Management Oversight Committees across divisions.

Dr. Davis is a recipient of multiple honors, including the University Outstanding Clinician Award, Department of Medicine Teaching Award, and MUSC Distinguished Faculty Service Award. A committed educator and leader in the American College of Physicians, she has helped organize the SC Chapter’s scientific meeting since 2001 and has contributed extensively to academic literature and conferences.

Dr. Susan Evenhouse attended the MUSC where she graduated in 2017. She was inducted into the Alpha Omega Alpha (AOA) Honor Society and served as the President of the Gold Humanism Honor Society. She completed a combined residency in Internal Medicine and Pediatrics at MUSC and is board certified in both specialties. After completion of her residency, she served as Internal Medicine Chief Resident before accepting a faculty position in the Division of General Internal Medicine. 

Dr. Goldstein is an experienced internal medicine physician with over 25 years in clinical practice, leadership, and medical education. Originally from Pennsylvania, she began her career at Penn State Health in Hershey, where she held several key roles, including Associate Program Director for Internal Medicine and Chief Medical Officer. She is deeply committed to quality care, medical education, and improving patient outcomes.

In 2022, she relocated to South Carolina and served with the VA Healthcare System as Chief of Medicine and later as Deputy Chief of Staff. Her clinical focus includes managing complex medical conditions and providing comprehensive, long-term care.

Dr. Kelly Graves is a geriatrician and board-certified internal medicine physician specializing in older adults' broad spectrum of care. A native of Chesapeake, Virginia, Dr. Graves earned her medical degree from Eastern Virginia Medical School in Norfolk, Virginia. She then completed her residency training at Rutgers New Jersey Medical School, followed by her geriatrics fellowship training at Icahn School of Medicine at Mount Sinai Hospital in New York, NY.

Dr. Robert Ishak brings over 20 years of experience in clinical medicine. Previously Dr. Ishak cared for patients in his native Harford County, Maryland, with University of Maryland Upper Chesapeake Health, before joining MUSC in 2021. Desiring a return to academic medicine, he joined the Department of Medicine's Internal Medicine team with the opportunity to combine clinical practice with resident and student teaching.

Dr. Brad Keith received his M.D. from the Medical University of South Carolina in 2002 and completed both his internship and residency in internal medicine from 2002 to 2005. Dr. Keith stayed on an additional year at MUSC as a chief resident/clinical instructor in the Department of Internal Medicine. He achieved American Board of Internal Medicine certification in 2005. He now serves MUSC as an Associate Professor. 

Dr. Leonard Lichtenstein is a professor in medicine. He completed residency at Vanderbilt Medical Center in internal medicine and his fellowship at MUSC  in endocrinology and metabolism. He is a fellow of the American College of Physicians,  fellow of the Philadelphia College of Physician, and a fellow of the American College of Endocrinology

Dr. Cara Litvin is a Professor in the Division of General Internal Medicine and Geriatrics at the Medical University of South Carolina. She graduated from the Medical University of South Carolina in 2004. She then completed her residency training in Internal Medicine at New York University School of Medicine/Bellevue Hospital Center. She returned to South Carolina to join the General Internal Medicine faculty at Medical University of South Carolina in 2008.

Dr. Litvin completed an Academic Generalist Fellowship at MUSC and also received her Master of Science in Clinical Research in 2010. She received a graduate certificate in clinical informatics from Oregon Health and Science University. 

Dr. Nathalie Malcolm is a dual-board certified pediatrician and internist, she cares for patients of all ages and backgrounds - from newborns to senior citizens. She is a member of the American College of Physicians and is board-certified in internal medicine and pediatrics. Special medical interests include pediatric and adult hypertension, obesity medicine, and fitness. 

Dr. Ahmed Mohamed is a population health epidemiologist interested in the applications of epidemiological and statistical methods in public health surveillance, study design, analysis, and policy/intervention evaluations to improve health access and address health disparities. Dr. Mohamed has extensive experience analyzing large datasets to investigate patterns and risk factors of health outcomes and disparities. 

Dr. Emily Nelson is an experienced anesthesiologist at the VA and palliative care physiscian at MUSC. Her interests include cancer pain management, palliative care in the perioperative setting and teaching palliative care communication techniques. She is committed to advancing medical education, multi-disciplinary collaboration, a patient-centered approach to care, and fostering compassionate care. 

Dr. Eric Palecek is a board-certified internal medicine physician who provides primary care services to patients ages 18 and older. Dr. Palecek earned his medical degree from Brown University in Rhode Island and then completed residency training in internal medicine at the Hospital of the University of Pennsylvania.

 Dr. Sanjay Saha is an internal medicine physician who provides primary care services to patients ages 18 and older.  

Dr. Andrew Schreiner completed his residency training at MUSC, where he also earned his MS in Clinical Research. He subsequently joined the faculty in the Department of Medicine where he is an associate professor and serves as the Jay Brzezinski, MD, General Internal Medicine Endowed Chair. 

Dr. Ryan Schexnaildre is a general internist at MUSC. He earned his medical degree at LSU Health Shreveport before moving to Charleston for his internship and residency. He completed his Internal Medicine Residency at MUSC in 2025 and was awarded General Internal Medicine Outpatient Resident of the Year. 

Dr. Samuel Schumann is an associate professor of medicine with clinical interests in the treatment of patients with hypertension, diabetes, hyperlipidemia and the coordination of care between primary care and subspecialty care for patients with (but not limited to) heart failure, cancer, and substance use disorders.

Dr Brigid Sullivan is an Assistant Professor of Medicine specializing in Palliative Care at the Medical University of South Carolina (MUSC). She earned her Dr. Dr. Sullivan received her undergraduate degree in Mathematics from the University of Notre Dame before serving in the United States Air Force as a controller on the AWACS aircraft. After completing her military service, Dr. Sullivan attended medical school at MUSC, graduating in 2008, and went on to complete her Family Medicine residency at MUSC in 2011. 

Dr. Michael Tucker is a general internist with special interests in general internal medicine, diabetes management and medical education. He attended medical school at MUSC, during which time he was invited to join the AOA Honors Medical Society. After graduating in 2014, he completed his internship and residency in internal medicine at Wake Forest Baptist Medical Center in Winston Salem, NC.  Upon completing residency, Dr. Tucker stayed an additional year at Wake Forest as a chief resident and clinical instructor in the Department of Internal Medicine. He then moved back to Charleston to pursue a career in general internal medicine. He is board certified and is currently an assistant professor of internal medicine at MUSC.

 Dr. Urban completed her residency and fellowship training at the Medical University of South Carolina. Her academic interests outside of palliative and hospice care include transitional medicine in adult and pediatric primary care and global health outreach and education. She currently serves as a faculty advisor for the National Med-Peds Residents' Association (NMPRA) and is a member of the Association of Med-Peds Physicians (AMPP).

Dr. Jacob Vaught attended the Edward Via College of Osteopathic Medicine in Blacksburg, Virginia. He went on to complete his residency training in the combined specialty of Internal Medicine and Pediatrics (Med-Peds) at East Carolina University's Brody School of Medicine. After residency, Dr. Vaught joined MUSC's Internal Medicine and Pediatrics clinic, where he enjoys caring for patients across all stages of life-from newborns to older adults. 

blessing@musc.edu

bilger@musc.edu

cainjoa@musc.edu

dericke@musc.edu

gallamar@musc.edu

hurleysc@musc.edu

kylek@musc.edu

General Internal Medicine

neesel@musc.edu

presleyk@musc.edu

reneaum@musc.edu

rosfeld@musc.edu

smibro@musc.edu

stress@musc.edu

wallinge@musc.edu