America’s Leading Doctors

From treating heart disease to fighting cancer, these physicians are changing the world of medicine

Columbia University
Specialty: Nephrology and Hypertension
Pogue’s interest in hypertension led her to be an active investigator in numerous studies including the African American Study of Kidney Disease and Hypertension Trial and Cohort Study and the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial.

Neil R. Powe, M.D., M.P.H., M.B.A.
Title: Professor of Medicine and Director of the Welch Center for Prevention,
Epidemiology and Clinical Research, Johns Hopkins University School of Medicine
Specialty: Internal Medicine
Powe is a leader in clinical and population-based research that has impacted national policy on patient care. A recognized expert in the treatment of chronic kidney disease, Powe is the principal investigator of a study funded by the Centers for Disease Control and Prevention.

Mark Roach III M.D.
Title: Professor, Department of Radiation Oncology and Urology; Vice Chair, Department of Radiation and Oncology, University of California San Francisco
Specialty: Radiation Oncology and Urology
Roach chaired highly regarded, large prospective randomized trials comparing different strategies for prostate cancer. His primary research focuses on the application of 3-D conformal and intensity modulated radiotherapy treatment.

Walter Royal III M.D.
Title: Associate Professor of Neurology, Anatomy and Neurobiology,
University of Maryland School of Medicine
Specialties: Neurology, Neurovirology, Neuroimmunology
Royal is an active investigator in multiple sclerosis clinical trials. He operates a laboratory that researches immune responses in multiple sclerosis and HIV infection. He
is also associate director of research at the Veterans Administration Multiple Sclerosis Center of Excellence, East.

Lloyd Shabazz, M.D., F.A.C.P.
Title: President and Medical Director, Delta Hematology / Oncology Associates
Specialty: Medical Oncology
Based in Portsmouth, Virginia, Shabazz’s clinical cancer research centers on the development of new and innovative therapies available for prevention and treatment of cancers and blood-related diseases. Though he has a special interest in hematologic malignancies, Shabazz offers patient care across a broad range of cancers.

Cheryl A. Smith, M.D.
Title: Medical Director, Mount Morris Medical
Specialty: Primary Care
Subspecialty: HIV/AIDS
A leading expert in HIV/AIDS and hepatitis C, Smith is committed to the practice of high-quality primary healthcare and medical education. She is executive director for The Burkina Foundation, a nonprofit based in Harlem with a specific focus on HIV/AIDS.

Duane T. Smoot, M.D.
Title: Professor of Medicine & Chief of Gastroenterology, Department of
Medicine, Howard University College of Medicine
Specialty: Gastroenterology
As the interim program director of Howard University’s General Clinical Research Center, Smoot is currently investigating the role of a bacterium, Helicobacter pylori, in the development of stomach cancer, and the prevention of sporadic colorectal adenomas.

Ilene Fennoy, M.D., M.P.H.
Specialty: Pediatric Endocrinology
Medical Director, Comprehensive Adolescent Bariatric Surgery Program,
Morgan Stanley Children’s Hospital;
Associate Clinical Professor of Pediatrics, Columbia University
For 25 years, Fennoy has treated children with diabetes. Most of her cases involve the Type 2 variety, previously thought to occur in those 45 years of age or older, but which has reached epidemic proportions among youth ages 11-14. The disease is linked to obesity and disproportionately affects children of color. Today, roughly 10% to 15% of children and teens are overweight, twice the figure two decades ago. Diabetes and insulin resistance are big medical problems for endocrinologists, says 61-year-old Fennoy.

Fennoy’s most recent clinical research involves a five-year study of a school-based intervention of

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