. Dr. Handy is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Spinocerebellar Ataxia Type 12, Spinocerebellar Ataxia Type 15, Spinocerebellar Ataxia Type 8, and Spinocerebellar Ataxia Type 10.

Christopher Duke, MD is a second-generation physician and native Washingtonian. His parents practiced medicine in Washington for four decades. Chris has practiced internal medicine here for 30 years. He attended George Washington University for his undergraduate and medical degrees. He completed Internal Medicine training at Penn State University. Chris practices evidence-based medicine while emphasizing empathy for his patients and their families. He personally knows and refers patients to the many outstanding specialists in Washington. He is excited to team with his patients to optimize their health and enjoyment of life. He has taught medical students at George Washington as an associate professor of medicine. He has been recognized by Washingtonian Magazine as a “Top Doctor” including in 2022. Outside of work, he enjoys traveling with wife Lilian and children Jacqueline and James. He loves attending Notre Dame football games and spoiling his pugs- Mini and Rockne! LinkedIn https://www.linkedin.com/in/christopher-duke-md-1126314. Dr. Duke is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Rabson-Mendenhall Syndrome, Vitamin B12 Deficiency, Subacute Combined Degeneration, and Cellulitis.

Pradeep Gupta is a Gastroenterologist in Arlington, Virginia. Dr. Gupta is rated as a Distinguished provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Attenuated Familial Adenomatous Polyposis, Juvenile Polyposis Syndrome, Cronkhite-Canada Disease, Endoscopy, and Colonoscopy.

"Dr. Rachit Kumar is a radiation oncologist specializing in genitourinary and gastrointestinal cancers. He is dedicated to patient-centered care, finding the most effective outcome for each patient and using the latest advances to minimize treatment time and side-effects. Dr. Kumar is frequently published in peer-reviewed journals on new methods of radiation therapy and the benefits to patient outcomes. He is a member of the Johns Hopkins Kimmel Cancer Center and treats patients at both Sibley Memorial Hospital and Suburban Hospital. Selected Publications Kumar R, Tchelebi LT, Anker CJ, Sharma N, Bianchi NA, Dragovic J, Goodman KA, Herman JM, Jiang Y, Jones WE, Kenney TJ, Lee P, Kundranda MK, Russo S, Small W, Suh WW, Yee N, and Jabbour SK. “American Radium Society (ARS) Appropriateness Use Criteria (AUC) for Loco-Regional Gastric Adenocarcinoma: Systemic Review and Guidelines.” American Journal of Clinical Oncology. 2022 Sep 1;45(9):391-402. Rooney MK, Traube B, Khan MK, Kumar R, and Walker GV. “Factors associated with image guided radiation therapy image rejection in a multi-site institution.” JCO Oncology Practice. Tang C, Hoffman KE, Allen PK, Gabel M, Schreiber D, Choi S, Chapin BF, Nguyen QN, Davis JW, Frank SJ, Navai N, McGuire SE, Anscher M, Pisters L, Pettaway CA, Kumar R, Linson P, Tripuraneni P, Tomaszewski JJ, Patel AB, Augspurger M, and Kuban DA. “Contemporary Prostate Cancer Treatment Choices in Multidisciplinary Clinics Referenced to National Trends.” Cancer. Tang C, Lei X, Smith GL, Pan HY, Hoffman K, Kumar R, Chapin BF, Shih YC, Frank SJ, and Smith BD. ""Influence of Geography on Prostate Cancer Treatment Coice: An Analysis of the National Medicare Database."" International Journal of Radiation Oncology Biology Physics. Tang C, Sherry AD, Haymaker C, Bathala T, Liu S, Fellman B, Aparicio A, Zurita-Saavedra A, Chun S, Reddy J, Choi S, Ghia A, McGuire S, Efstathiou E, Wang J, Wang J, Tu SM, Pilie P, Kovitz C, Kumar R, Roberts T, Borghero Y, Shi Z, Chapin B, Gomez D, Wistuba I, Corn and PG. “Addition of local consolidative therapy to intermittent hormone therapy for oligometastatic prostate cancer (EXTEND): a multicenter randomized phase II basket trial.” JAMA Oncology.". Dr. Kumar is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Pancreatic Cancer, Familial Pancreatic Cancer, Pancreatoblastoma, and Prostate Cancer.

Dean Carpousis is a Cardiologist in Arlington, Virginia. Dr. Carpousis is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Heart Murmurs, High Cholesterol, Vitamin D Deficiency, and Glucocorticoid-Remediable Aldosteronism.

Dr. Jeffrey Sherman is an internist affiliated with Sibley Memorial Hospital and George Washington University Hospital. He has a private practice in Washington, D.C. Dr. Sherman earned his medical degree from Icahn School of Medicine at Mount Sinai, where he also completed his internship. He completed a residency in internal medicine at Albert Einstein-Montefiore Medical Center, followed by a fellowship in rheumatology at the National Institutes of Health Clinical Center. Dr. Sherman was named a Regional Top Doctor in 2014 by Castle Connolly. Dr. Sherman is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Raynaud Phenomenon, Idiopathic Hypersomnia, Lactose Intolerance, and High Cholesterol.

Dr. Elliot Aleskow is an internist affiliated with Sibley Memorial Hospital and George Washington University Hospital. He has a private practice in Washington, D.C. Dr. Aleskow earned his medical degree at the University of Maryland School of Medicine. He completed a residency in internal medicine at George Washington University. Dr. Aleskow performs physical examinations, evaluates patients for their medical concerns and provides vaccinations for international travel. Dr. Aleskow has been repeatedly named a Top Doctor in Washingtonian Magazine and has been named a Super Doctor by Washington Post Magazine. Dr. Aleskow is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Infant Hyperglycemia, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Dr. Marta A. Schneider is an internist affiliated with Sibley Memorial Hospital. She has a private practice in Washington, D.C. Dr. Schneider earned her medical degree from George Washington University School of Medicine. She completed a residency in internal medicine at St. Francis Hospital Medical Center. Dr. Schneider is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Rickets, Osteomalacia, Frequent or Urgent Urination, Enlarged Liver, and Ureteroscopy.

Kristin Yamamoto is a primary care provider, practicing in Rheumatologist in Washington, Washington, D.c.. Dr. Yamamoto is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Sitosterolemia, Postmenopausal Osteoporosis, Osteoporosis, and High Cholesterol.

Dr. David M. Hansen is an internist affiliated with Sibley Memorial Hospital and Georgetown University Hospital. He practices out of Foxhall Internists in Washington, D.C. Dr. Hansen’s clinical interests range from preventive care to long-term management of chronic conditions, such as diabetes, hypertension and heart failure. Dr. Hansen earned his undergraduate degree from Harvard College and his medical degree from Johns Hopkins University School of Medicine. He completed a residency in internal medicine at Stanford University School of Medicine. Dr. Hansen previously served as clinical faculty of Stanford Medical School and practiced at the Stanford-affiliated Menlo Medical Clinic. Dr. Hansen has been named a Top Internist by Washingtonian magazine and Consumers’ Checkbook magazine. He has also been named one of the Best Doctors in America and a Super Doctor by the Washington Post magazine. Dr. Hansen is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Alcoholic Cirrhosis, High Cholesterol, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

Theodore Li is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Li is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Chronic Cough, Fainting, Hypothyroidism, and Obesity in Children.

Dr. Lawrence E. Klein is an internist affiliated with Sibley Memorial Hospital; Johns Hopkins Hospital, where he holds a part-time faculty appointment; and Georgetown University Hospital, where he also holds a faculty appointment. He practices out of Foxhall Internists in Washington, D.C. Dr. Klein completed a joint M.D.-Ph.D. program at Johns Hopkins University School of Medicine, where he was elected into the AOA Medical Honor Society. He completed a residency in internal medicine at Strong Memorial Hospital of the University of Rochester, followed by a fellowship in internal medicine at Johns Hopkins Hospital. Dr. Klein was one of the country’s first Henry J. Kaiser Foundation fellows in internal medicine. He went on to serve as a full-time Johns Hopkins medical faculty member. Dr. Klein previously served as the president of the D.C. Society of Internal Medicine and the governor of the D.C. Chapter of the American College of Physicians. Dr. Klein has been repeatedly named a Top Doctor in Washingtonian magazine and Consumers’ Checkbook magazine, as well as named a Super Doctor in the Washington Post magazine and one of the Best Doctors in America. He was awarded the American College of Physicians John H. Maher Laureate Award in 2001 and inducted as a Master of the American College of Physicians in 2009. Dr. Klein has contributed to numerous publications and presentations, abstracts and posters, and lectures on various topics. Dr. Klein is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Richter Syndrome, and Familial Hypertriglyceridemia.

Dr. Joshua S. Yamamoto is a cardiologist affiliated with Sibley Memorial Hospital and Georgetown University Hospital. He practices out of Foxhall Medicine in Washington, D.C. Dr. Yamamoto earned his undergraduate degree from Princeton University and his medical degree from Dartmouth Medical School. He completed a residency in internal medicine at Johns Hopkins Health System, followed by a fellowship in cardiology at Georgetown University Hospital and a fellowship in cardiovascular disease at National Naval Medical Center. Dr. Yamamoto went on to serve in the United States Navy for eight years. During this time, he served as the director of cardiac imaging at Bethesda Naval Hospital, the cardiology consultant for the attending physician to Congress, the head of cardiology training and supported cardiac needs in the war zone of Kuwait in 2005. Dr. Yamamoto is a fellow of the American College of Cardiology. Dr. Yamamoto has been named a Top MD by Consumers’ Checkbook Magazine and a 2012 Top Doctor in the Washington, D.C. and Washington-Baltimore areas by Castle Connolly. LinkedIn https://www.linkedin.com/in/joshua-yamamoto-64abaa115/. Dr. Yamamoto is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Sick Sinus Syndrome, Arrhythmias, Carotid Artery Disease, and Hypertensive Heart Disease.

Farooq Sheikh is a Cardiologist in Washington, Washington, D.c.. Dr. Sheikh is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Sarcoidosis, Heart Failure, Cardiomyopathy, Heart Transplant, and Cardiac Ablation.

John Molaiy is a primary care provider, practicing in Family Medicine in Arlington, Virginia. Dr. Molaiy is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Vitamin B12 Deficiency, Glossitis, Pernicious Anemia, and Subacute Combined Degeneration. Dr. Molaiy is currently accepting new patients.

Ana Moya is a Physician Assistant in Arlington, Virginia. Ms. Moya has been practicing medicine for over 18 years and is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Vitamin B12 Deficiency and Vitamin D Deficiency. Ms. Moya is currently accepting new patients.

Shayma Al-Mudhafar is a primary care provider, practicing in Internal Medicine in Falls Church, Virginia. Dr. Al-Mudhafar is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Vitamin B12 Deficiency, Subacute Combined Degeneration, Vertigo, and Vitamin D Deficiency. Dr. Al-Mudhafar is currently accepting new patients.

Christopher O'connor is a Cardiologist in Falls Church, Virginia. Dr. O'connor is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Heart Failure, Cardiogenic Shock, Heart Failure with Preserved Ejection Fraction (HFpEF), Heart Bypass Surgery, and Percutaneous Coronary Intervention (PCI).

Dr. Jose A. Quiros is an internist affiliated with Sibley Memorial Hospital and Suburban Hospital. He has a private practice in Bethesda, Md. Dr. Quiros earned his medical degree from the Universidad Nacional Mayor de San Marcos. He completed an internship and residency in internal medicine at Georgetown University Hospital. Dr. Quiros has been named a Top Doctor by Washingtonian magazine. Dr. Quiros is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Glossitis, Pernicious Anemia, High Cholesterol, and Vitamin B12 Deficiency.

Dr. Edward T. Cullen is an internist affiliated with Sibley Memorial Hospital. He practices out of Cullen, Umosella, Cullen & Cullen in Bethesda, Md. and Oxon Hill, Md. Dr. Cullen earned his medical degree from Georgetown University School of Medicine. He completed an internship in internal medicine at St. Vincent Hospital, followed by a residency in internal medicine at Geisinger Medical Center. Dr. Cullen has been named a Super Doctor by the Washington Post and a Top MD by Consumers’ Checkbook Magazine, as well as a Top Family/General Practitioner by Washingtonian Magazine. Recent News Articles and Media Coverage The Brothers Cullen. Bethesda Magazine (January/February 2008). Dr. Cullen is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Squamous Cell Lung Carcinoma, EGFR Positive Lung Cancer, Non-Small Cell Lung Cancer (NSCLC), and Small Cell Lung Cancer (SCLC).