DMC Sinai-Grace Hospital Staff

Our Staff


Malitha Hettiarachchi, MD, Site Director

A board-certified internist, Dr. Hettiarachchi completed her medical education at University of Colombo Sri Lanka and a residency at WSU/DMC Sinai-Grace Hospital, where she served as a chief medical resident. She serves as a clinical assistant professor both at WSU School of Medicine and MSU College of Osteopathic Medicine. Dr. Hettiarachchi is also an active clinical researcher and has presented her research in many national-level medical conferences. Her clinical interest areas are cardiovascular disease, kidney disease, diabetes, preventative care, quality improvement and medical education.


Lawrence S. Lackey, Jr., MD, FACP

Dr. Lawrence Lackey, Jr., is board-certified internist. A graduate of WSU School of Medicine, Dr. Lackey holds positions on many committees at DMC, including chairman of the ethics committee. An educator, Dr. Lackey is an assistant professor and clinical educator at WSU, conducting general medicine teaching rounds and teaching courses on internal medicine and physical diagnosis.


Sandra A. Jones-Lackey, MD

Dr. Sandra Jones-Lackey is a graduate of WSU School of Medicine and currently serves as the associate director of the Sinai-Grace Ambulatory Internal Medicine Clinic. An instructor at WSU, Dr. Jones-Lackey supervises residents at the Clinic in addition to teaching courses in physical diagnosis and ambulatory medicine.


Robert Walker, MD

Robert Walker, MD, is a graduate of WSU School of Medicine and completed his Internal Medicine Residency at the WSU Affiliated Program/DMC Hutzel Hospital. After years in private practice, he joined the faculty at Sinai-Grace Hospital Department of Internal Medicine in 1990. He has clinical faculty appointments at both WSU School of Medicine as Clinical Instructor and at MSU College of Human Medicine as Clinical Assistant Professor. With more than 30 years of experience in both ambulatory care and inpatient medicine, he is currently active teaching medical students and residents at two ambulatory care sites.


Marc Feldman, MD, FACP
Senior Vice President

Dr. Marc Feldman is a board-certified internist with a specialty in geriatric medicine. A graduate of WSU School of Medicine, he has served as associate program director for the Internal Medicine Training Program at Sinai-Grace since 1994. Dr. Feldman has taught at WSU for more than 20 years and is clinical assistant professor of medicine at MSU School of Medicine. He continues to be the coordinator for medical grand rounds at Sinai-Grace.


Lalitha Koneru, MD