Ali Safayan is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Safayan is rated as an Advanced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Vitamin B12 Deficiency Anemia.

Nayo Wills is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Wills is rated as an Advanced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Peripheral Neuropathy, Memory Loss, Premenstrual Syndrome, and Autosomal Recessive Hypotrichosis. Dr. Wills is currently accepting new patients.

Dr. Vera L. Sheen is a Johns Hopkins Community Physician practicing out of Sibley Primary Care located in Sibley Memorial Hospital’s Medical Building in Washington, D.C. She is affiliated with Georgetown University Hospital as well. Dr. Sheen has an expertise in internal medicine. Dr. Sheen earned her medical degree from University of Kentucky College of Medicine. She completed a residency in internal medicine at Barnes-Jewish Hospital. Dr. Sheen is rated as an Advanced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Vitamin D Deficiency, High Cholesterol, Vitamin B12 Deficiency Anemia, and Folate Deficiency.

Robert Enelow is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Enelow is rated as an Advanced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Retinopathy Arteriosclerotic, High Cholesterol, Vitamin D Deficiency, and Folate Deficiency. Dr. Enelow is currently accepting new patients.

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 Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Rabson-Mendenhall Syndrome, Vitamin B12 Deficiency, Subacute Combined Degeneration, and Cellulitis.

Dr. Andrea D. Hulse-Johnson is an internist at Sibley Memorial Hospital. She provides outpatient primary care to adults for prevention guidance and chronic disease management. Dr. Hulse-Johnson is a Sibley Primary Care physician who practices out of Sibley Memorial Hospital’s Medical Building, suite 300. Dr. Hulse-Johnson earned her medical degree from A.T. Still University Kirksville College of Osteopathic Medicine. She completed a family practice residency at West Jersey Hospital – Virtua Health. Dr. Hulse is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Enlarged Liver.

Deborah Horwitz is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Horwitz is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Folate Deficiency, Multiple Carboxylase Deficiency, Vitamin B12 Deficiency Anemia, and Subacute Combined Degeneration. Dr. Horwitz is currently accepting new patients.

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 Subacute Combined Degeneration. Her top areas of expertise are Sitosterolemia, Postmenopausal Osteoporosis, Osteoporosis, and High Cholesterol.

Michelle Gaskins-Craig is a primary care provider, practicing in Family Medicine in Washington, Washington, D.c.. Dr. Gaskins-Craig is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Gout, Obesity, Genital Herpes, and Vulvovaginitis.

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 Subacute Combined Degeneration. His top areas of expertise are Alcoholic Cirrhosis, High Cholesterol, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

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 Subacute Combined Degeneration. His top areas of expertise are Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Richter Syndrome, and Familial Hypertriglyceridemia.

Dr. Andrew N. Umhau is an internist affiliated with Sibley Memorial Hospital and Georgetown University Hospital. He practices out of Foxhall Internists in Washington, D.C. Dr. Umhau has an expertise in general internal medicine, with clinical interests in adolescent and young adult medicine, medical problems of pregnancy and cross-cultural issues. Dr. Umhau earned his undergraduate degree from Davidson College and his medical degree from Duke University. He completed a residency in internal medicine at Georgetown University, where he became chief resident. Dr. Umhau was named a Super Doctor by the Washington Post and has been named one of the Best Doctors in America. Castle Connolly named him a Top Doctor in the Washington, D.C. and Washington-Baltimore areas in 2012. Dr. Umhau also earned the 2009 Laureate Award by the American College of Physicians, Washington, D.C. chapter. Dr. Umhau is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are High Cholesterol, Recurrent Peripheral Facial Palsy, Facial Paralysis, and Bell's Palsy.

Lucy Chang is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Vitamin D Deficiency, High Cholesterol, Vitamin B12 Deficiency, and Glossitis.

Aparna Miano is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Miano is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Oral Cancer, Folate Deficiency, Multiple Carboxylase Deficiency, and Vitamin B12 Deficiency Anemia. Dr. Miano is currently accepting new patients.

Ricardo Caldera is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Caldera is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Chronic Kidney Disease, Osteomyelitis in Children, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Colonoscopy.

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 Subacute Combined Degeneration. His top areas of expertise are Infant Hyperglycemia, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Ravi Sarma is a Hematologist Oncology specialist and a Hematologist in Washington, Washington, D.c.. Dr. Sarma is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Anemia, Breast Cancer, Thrombocytopenia, and Paget Disease of the Breast.

Vimala Jayanthi is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Jayanthi is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. Her top areas of expertise are Cerebral Amyloid Angiopathy, Primary Localized Cutaneous Amyloidosis, Cardiac Amyloidosis, and Hereditary Cerebral Amyloid Angiopathy.

Dr. Collin D. Cullen is an internist affiliated with Sibley Memorial Hospital. He practices out of Cullen, Umosella, Cullen & Cullen in Bethesda, Md. Dr. Cullen earned his medical degree from Georgetown University School of Medicine. He completed a residency in obstetrics and gynecology at Geisinger Medical Center. Dr. Cullen has been named 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 Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Tension Headache, Subacute Combined Degeneration, Cirrhosis, and Familial Combined Hyperlipidemia.

Kevin Nealon is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Nealon is rated as an Experienced provider by MediFind in the treatment of Subacute Combined Degeneration. His top areas of expertise are Chronic Cough, Vertigo, Fainting, and Hyperlipidemia Type 3.