The 20 Best Malnutrition Doctors Near Me in Parkville, MD

Dr. Mullin is an associate professor of medicine at The Johns Hopkins University School of Medicine. Dr. Mullin has more than 30 years of clinical experience in the field of general gastroenterology. Dr. Mullin is a reviewer and also serves on the editorial board of numerous gastroenterology journals. Videos Hopkins at Home presents, A Woman's Journey: Is It Celiac Disease?. Dr. Mullin is rated as an Advanced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Small Bowel Bacterial Overgrowth, Diarrhea, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy. Dr. Mullin is board certified in American Board Of Internal Medicine.

Franco Vallejo is an Endocrinologist practicing medicine in Parkville, Maryland. He has been practicing medicine for over 17 years. Dr. Vallejo is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Protein Deficiency, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), and Autosomal Dominant Hypocalcemia.

Bashar Pharoan is an Intensive Care Medicine provider practicing medicine in Nottingham, Maryland. Dr. Pharoan is rated as an Experienced provider by MediFind in the treatment of Malnutrition. His clinical expertise encompasses Gastritis, Esophagitis, Gastrointestinal Fistula, Chronic Erosive Gastritis, and Gastrectomy.

Dr. Eric McCollum is a pediatric pulmonologist at the Johns Hopkins School of Medicine. He has expertise in global child respiratory health with more than ten years of clinical and research experience in low-resource settings in southern Africa and south Asia. After having lived in Malawi for five years as a clinician with the Baylor Pediatric AIDS Corps and as a NIH Fogarty International Clinical Research Fellow, Dr. McCollum is now primarily based in the countries of Lesotho and Bangladesh. He is the principal investigator of a NIH K01 International Research Scientist Development Award, through the Fogarty International Center, examining the role of pulse oximetry in Bangladeshi children with clinical pneumonia. Dr. McCollum is also a co-investigator for a study comprehensively examining the effectiveness of the pneumococcal conjugate vaccine in rural Bangladeshi children. In the southern African country of Malawi Dr. McCollum is the principal investigator of a randomized controlled trial investigating the effectiveness of bubble continuous positive airway pressure in children hospitalized with severe clinical pneumonia. He has successfully designed, led, or co-led several multi-site studies in developing countries throughout Africa and Asia including the novel application of pulse oximetry for children with clinical pneumonia by rural Malawian frontline health workers and digital auscultation as a respiratory diagnostic in six low-resource countries participating in the Pneumonia Etiology Research for Child Health study. Dr. McCollum has been recognized globally for his contributions to child respiratory health. He has won multiple early career investigator awards and is currently a member of the World Health Organization Technical Support Network for pneumococcal conjugate vaccine impact studies and a member of the World Health Organization expert global working group for the World Health Organization chest radiograph guidelines for children. He holds a joint faculty appointment in the Department of International Health at the Johns Hopkins School of Public Health. Dr. Mccollum is rated as an Advanced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Cerebral Hypoxia, Malnutrition, HIV/AIDS, and Infantile Pneumothorax. Dr. Mccollum is board certified in American Board Of Pediatrics.

Todd T. Brown, MD, PhD is a clinical investigator who focuses on body composition, metabolic, and skeletal abnormalities observed in people with HIV, particularly as related to aging. Through translational investigation, epidemiologic studies, and clinical trials, he has been interested in understanding the pathogenesis of glucose disorders, fat changes, hormonal dysregulation, and osteoporosis in people with HIV, the consequences of these conditions (eg cardiovascular disease, frailty), and their optimal evaluation and management. Dr. Brown is rated as an Advanced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Low Blood Sugar, Osteoporosis, Malnutrition, Gastric Bypass, and Gastrostomy.

Andres Vallejo is a primary care provider, practicing in Internal Medicine in Parkville, Maryland. Dr. Vallejo is rated as an Advanced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Vascular Dementia, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

Rakesh Malik is a primary care provider, practicing in Internal Medicine in Nottingham, Maryland. Dr. Malik is rated as an Advanced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 57 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Hypertension.

Rexford Ahima is an Endocrinologist practicing medicine in Baltimore, Maryland. Dr. Ahima is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Obesity, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Sleeve Gastrectomy, and Gastric Bypass.

C. Nicholas Cuneo, M.D., M.P.H. is an assistant professor of Pediatrics and Medicine at the Johns Hopkins University School of Medicine. Dr. Cuneo is a graduate of the Harvard Brigham & Women’s Hospital/Boston Children’s Hospital Medicine-Pediatric Residency and served as chief resident for the Doris and Howard Hiatt Residency in Global Health Equity at Brigham & Women’s Hospital. He earned his B.S. in biology and anthropology at Duke University, his M.D. at the Johns Hopkins University School of Medicine, and his M.P.H. in clinical effectiveness at the Harvard T.H. Chan School of Public Health. He works as an academic hospitalist for children and adults at Johns Hopkins Hospital and Johns Hopkins Children's Center. He is the founding Executive Director of the HEAL Refugee Health & Asylum Collaborative, which provides trauma-informed, responsive health care and supportive services to immigrant survivors of torture and trauma, including Baltimore’s first comprehensive pro bono asylum clinic and the Restorative and Integrative Survivor Empowerment (RISE) Program for survivors of torture, for which Dr. Cuneo serves as Medical Director. Dr. Cuneo is a co-director of the Global and Refugee Health Leadership Track at JHUSOM and has extensive global health research and program management experience, particularly in Haiti, where he was a Harvard Medical School Doris Duke International Clinical Research Fellow, and South Africa, where he was a Fulbright Research Fellow in Public Health. In addition to his roles at JHUSOM, he is affiliated with the Johns Hopkins Center for Humanitarian Health and the Center for Public Health and Human Rights at Johns Hopkins Bloomberg School of Public Health. He further serves nationally as Co-Lead of the Asylum Medicine Training Initiative and on the Physicians for Human Rights Medical Expert Task Force. Dr. Cuneo is rated as an Experienced provider by MediFind in the treatment of Malnutrition. His clinical expertise encompasses HIV/AIDS and Malnutrition. Dr. Cuneo is board certified in American Board Of Pediatrics and American Board Of Internal Medicine.

Gastroenterologist Mouen Khashab specializes in therapeutic endoscopy, and he oversees this group of practitioners across the Johns Hopkins enterprise. Nationally and internationally known in the field of interventional endoscopy, Dr. Khashab has contributed immensely to the field’s advancement as a minimally invasive means to treat gastrointestinal and pancreaticobiliary disorders. Dr. Khashab earned his medical degree from the American University of Beirut Faculty of Medicine, and subsequently completed a residency in internal medicine and a fellowship in gastroenterology at Indiana University. He then completed a two-year fellowship at The Johns Hopkins Hospital before joining the faculty in 2011. A busy researcher, Dr. Khashab has published more than 600 papers in peer-reviewed journals. In 2013, he described the procedure called gastric peroral endoscopic myotomy (known as G-POEM) and was able to disseminate and teach it all over the world. Other procedures that he expanded include peroral endoscopic myotomy (POEM), peroral endoscopic myotomy with fundoplication (POEM-F), Zenker’s peroral endoscopic myotomy (Z-POEM) and full thickness resection. In 2022, he received the Master Endoscopist Award from the American Society for Gastrointestinal Endoscopy (ASGE) for his numerous contributions to the field. His procedural expertise includes endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), interventional EUS, submucosal endoscopy, POEM/achalasia, endoscopic mucosal resection, endoscopic submucosal dissection, luminal stenting, large polyp resection and Barrett’s therapy, among others. Dr. Khashab is involved with multiple gastrointestinal societies and has served on many committees, including the ASGE Standards of Practice Committee, which is in charge of formulating guidelines for the practice of endoscopy. He has also served as an associate editor for the journal Endoscopy, a premier journal in the field. Khashab is a highly sought-after speaker at national and international conferences, and he has participated in multiple live endoscopy conferences. Outside of academic medicine, Dr. Khashab is an entrepreneur. His major interest is in new technology and medical devices, and his goal is to disrupt the field by introducing technology that makes endoscopic procedures safer, easier, efficient and more scalable. Dr. Khashab is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Achalasia, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass. Dr. Khashab is board certified in American Board Of Internal Medicine.

Dr. Leticia Manning Ryan is an Associate Professor of Pediatrics at the Johns Hopkins University School of Medicine and has a joint appointment in the Johns Hopkins Bloomberg School of Public Health. Her areas of clinical expertise include pediatric emergency medicine. Dr. Ryan received her medical degree with honors from the University of Vermont College of Medicine and a master’s degree in public health, from the George Washington University School of Public Health and Health Services. She completed her clinical training (residency in pediatrics, chief residency in pediatrics, fellowship in pediatric emergency medicine) from 1999-2006 at Children’s National Medical Center in Washington, DC where she remained as a faculty member until 2013. Dr. Ryan’s research focuses on injury and violence prevention and has been funded through the National Institutes of Health and national and regional foundations. She completed a K23 Career Development Award to study the role of bone health in pediatric fractures and is a selected participant in the Robert Wood Johnson Foundation Interdisciplinary Research Leaders Program. Dr. Ryan has authored or co-authored more than forty articles and book chapters in the fields of injury and emergency medicine. Dr. Ryan is rated as an Experienced provider by MediFind in the treatment of Malnutrition. Her clinical expertise encompasses Sudden Infant Death Syndrome (SIDS), Vitamin D Deficiency, and Malnutrition. Dr. Ryan is board certified in American Board Of Pediatrics.

David Hutcheon is a Gastroenterologist practicing medicine in Lutherville, Maryland. Dr. Hutcheon is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Intestinal Cancer, Angiodysplasia of the Colon, Colonoscopy, and Endoscopy. Dr. Hutcheon is board certified in American Board Of Internal Medicine.

"Michael Schweitzer, M.D., developed the laparoscopic bariatric surgery programs at the Medical College of Virginia (one of the first ten laparoscopic gastric bypass programs in the country), Georgetown University, Sinai Hospital of Baltimore and the Johns Hopkins University. Dr. Schweitzer was the first surgeon in the mid-Atlantic area to perform laparoscopic Roux-en-Y gastric bypass and the first in Maryland to perform laparoscopic adjustable gastric band surgery and laparoscopic duodenal switch with biliopancreatic diversion. Currently chair of the membership committee for the American Society of Bariatric Surgeons, Dr. Schweitzer also serves as a site inspector for the American College of Surgeons Bariatric Center of Excellence Program. He serves on three editorial boards: the Journal of Laparoendoscopic and Advanced Surgical Techniques, Surgery for Obesity and Related Diseases the official journal of the American Society of Bariatric Surgeons) and Bariatric Times. Dr. Schweitzer was the first to ever publish a technique for endoscopic stoma reduction using transoral endoscopic suturing. A great deal of attention is focused on the future of transoral surgery to avoid abdominal incisions for routine surgery (""No-Scar Surgery""). Dr. Schweitzer is one of the first to apply this technology to bariatric patients. A writer of numerous papers, chapters and review articles on bariatric surgery, several of Dr. Schweitzer''s laparoscopic bariatric surgical techniques have been featured in the American College of Surgeons Cine Video Series. He is considered an international expert on venous thromboembolic complications after bariatric surgery and has one of the lowest complication rates documented in world surgical literature. Dr. Schweitzer currently has an extremely active laparoscopic bariatric practice that includes laparoscopic Roux-en-Y gastric bypass, laparoscopic adjustable gastric band, laparoscopic sleeve gastrectomy, laparoscopic duodenal switch with biliopancreatic diversion, and revision of previous surgery. The team at the Johns Hopkins Center for Bariatric Surgery has successfully completed over 2500 bariatric procedures.". Dr. Schweitzer is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Obesity, Hernia, Gastroesophageal Reflux Disease (GERD), Gastric Bypass, and Gastrectomy. Dr. Schweitzer is board certified in American Board Of Surgery.

Dr. Po-Hung (Victor) Chen is a transplant hepatology and addiction medicine physician. He is jointly appointed by the Division of Gastroenterology and Hepatology and the Division of Addiction Medicine. Dr. Chen's clinical focus is to care for patients with general or transplant-related liver conditions, including alcohol-associated liver disease (ALD), metabolic dysfunction-associated steatotic liver disease (MASLD), viral hepatitis, autoimmune liver diseases, hemochromatosis, and other diagnoses. He directed the creation of a Johns Hopkins Medicine informational webpage on ALD. He is also a frequent consultant for other Johns Hopkins clinicians regarding inquiries about ALD, including biomarker interpretation, acute hepatitis management, and addiction treatment delivery. Dr. Chen is a member of multiple professional medical and public health organizations (see below). He is a Fellow of the American College of Gastroenterology and a Fellow of the American Society of Addiction Medicine. Dr. Chen is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hepatitis, Hepatitis C, Cirrhosis, Liver Transplant, and Endoscopy. Dr. Chen is board certified in American Board Of Preventive Medicine and American Board Of Internal Medicine.

Vikesh Singh is a gastroenterologist who specializes in pancreatology and pancreaticobiliary endoscopy. He evaluates and treats patients with inflammatory diseases of the pancreas, including acute and chronic pancreatitis and autoimmune pancreatitis as well as the complications of these diseases. After earning his medical degree from the Johns Hopkins University School of Medicine, Dr. Singh remained at Johns Hopkins to complete residency training in internal medicine. He pursued fellowship training in gastroenterology at Brigham and Women’s Hospital, and earned a master’s degree in epidemiology from the Harvard T. H. Chan School of Public Health. He then returned to Johns Hopkins, where he completed a two-year advanced endoscopy fellowship with a focus on pancreaticobiliary endoscopy. Dr. Singh has been on the faculty at Johns Hopkins since 2008, and rose to the rank of professor in 2021. His research interests include acute and chronic pancreatitis, autoimmune pancreatitis, exocrine pancreatic insufficiency, and novel methods to evaluate and treat abdominal pain. Dr. Singh is a member of the board of directors of the National Pancreas Foundation, chair of the Pancreatic Disorders Section of the American Gastroenterological Association, a councilor for the International Association of Pancreatology and a member of the inaugural medical advisory board for the Familial Chylomicronemia Syndrome Foundation. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 27 other conditions, according to our data. His clinical expertise encompasses Exocrine Pancreatic Insufficiency, Hereditary Pancreatitis, Acute Pancreatitis, Pancreatectomy, and Endoscopy. Dr. Singh is board certified in American Board Of Internal Medicine.

Lawrence J. Cheskin, MD, FACP, FTOS, is now an adjunct professor of gastroenterology and general internal medicine at the Johns Hopkins School of Medicine. Since 2019, he has also been a professor (and chair from 2019 to 2024) of Nutrition and Food Studies in the College of Public Health at George Mason University in Fairfax, VA. In his research, Dr. Cheskin studies the effectiveness of various lifestyle and dietary changes in weight loss and weight maintenance. He has experience in the design and implementation of controlled clinical trials and laboratory studies of different dietary techniques, as well as individual and community-based interventions, including those targeting underserved residents of inner-city and suburban Baltimore. His background and experience are broad, ranging from basic science work on dopamine genetics to efforts aimed at preventing childhood obesity through systems-focused studies of the effects of policies and the built environment. Most recently, he has been studying health risk factors among young adult college students and the utility of mHealth in positively influencing diet and weight control. He has written approximately 250 peer-reviewed publications and 9 books and is frequently cited in the media on issues related to obesity, nutrition, and dieting. Dr. Cheskin is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Obesity, Gastroesophageal Reflux Disease (GERD), Malnutrition, Liver Embolization, and Endoscopy. Dr. Cheskin is board certified in American Board Of Internal Medicine.

Dr. Magnuson specializes in gastrointestinal surgery, including surgeries of the stomach, gallbladder, pancreas and bowel. He has a special interest in bariatric surgery and established the Johns Hopkins Center for Bariatric Surgery in 1997. In 2006, the program was recognized as a Center of Excellence by the American Society for Bariatric Surgery. Dr. Magnuson completed his specialty training in gastrointestinal surgery at The Johns Hopkins Hospital, where he also completed a fellowship investigating issues related to gallstone pathogenesis and biliary tract disease. He is also a member of the Johns Hopkins Comprehensive Hernia Center. He is currently Chair of the Department of Surgery and Chief of General Surgery at Johns Hopkins Bayview Medical Center, and Vice Chair of Surgery at Johns Hopkins. Dr. Magnuson is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hernia, Obesity, Gallstones, Gastric Bypass, and Gastrectomy. Dr. Magnuson is board certified in American Board Of Surgery.

Gastroenterologist Saowanee Ngamruengphong specializes in the endoscopic diagnosis and management of gastrointestinal malignancies, premalignant and malignant lesions in the gastrointestinal tract (e.g., early gastric cancer, Barrett's esophagus-associated neoplasia), esophageal cancer, colon polyps or early colorectal cancer, and pancreatic and biliary disease. Dr. Ngamruengphong earned a medical degree from Chulalongkorn University and completed residency training at the Texas Tech University Health Sciences Center. She undertook fellowship training in gastroenterology at the Mayo School of Graduate Medical Education and further fellowship training in therapeutic endoscopy at The Johns Hopkins Hospital. Her research interests include endoscopic resection and the management of precancerous or cancerous gastrointestinal lesions. Dr. Ngamruengphong is a member of several professional organizations, including the Thai Medical Council, the American College of Gastroenterology and the American Gastroenterological Association. Videos Endoscopic Submucosal Dissection (ESD) — Eileen’s Story Recent News Articles and Media Coverage A Rare, Stomach-Saving Endoscopic Procedure, Inside Tract (Spring 2021) Case Presentation: ESD-TAMIS, Inside Tract (Spring 2019) Innovative Approaches to Colorectal Surgery Benefit Patients, Surgery (Winter 2019) For Colorectal Polyps: Early Detection and Minimally Invasive Endoscopic Resection, Inside Tract (Winter, 2019) The Cutting Edge of Endoscopic Resection, Inside Tract (Spring, 2017) Stomach Cancer: Know Your Risks & Treatment Options, Johns Hopkins Surgery (4/26/2017). Dr. Ngamruengphong is rated as an Experienced provider by MediFind in the treatment of Malnutrition. She is also highly rated in 41 other conditions, according to our data. Her clinical expertise encompasses Achalasia, Stomach Cancer, Pancreatic Pseudocyst, Endoscopy, and Gastric Bypass. Dr. Ngamruengphong is board certified in American Board Of Internal Medicine.

Dr. Rita Kalyani is a Professor of Medicine at Johns Hopkins School of Medicine. She graduated with an undergraduate degree from Harvard College and completed her medical degree, residency, and fellowship at Johns Hopkins. She also obtained a Masters in Health Science degree in Clinical Investigation from the Johns Hopkins Bloomberg School of Public Health. As a NIH-funded clinician scientist, Dr. Kalyani has authored over 175 peer-reviewed publications and built a research program focused on understanding the factors leading to development of diabetes complications, particularly in high-risk populations. She has conducted epidemiological and patient-oriented research that has led to fundamental discoveries regarding the development of skeletal muscle loss, physical disability, and frailty in diabetes. She has also spearheaded studies investigating sex differences in cardiovascular disease and diabetes which have influenced primary prevention guidelines. Dr. Kalyani launched the Diabetes Management Service for Johns Hopkins’ Total Pancreatectomy Islet Auto Transplant Program in 2011. She is the co-founder of the Johns Hopkins Diabetes POC-IT Guide for healthcare professionals. She is also the founder and past Editor-in-Chief of the Johns Hopkins Patient Website to Diabetes. Dr. Kalyani has been the Chief Scientific and Medical Officer of the American Diabetes Association since 2025. She previously served as President of Medicine & Science on the ADA's National Board of Directors. She continues to have a clinical practice as an adult endocrinologist. Dr. Kalyani is rated as an Experienced provider by MediFind in the treatment of Malnutrition. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Seasonal Affective Disorder (SAD), Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Pancreatectomy, and Islet Cell Transplantation.

Jin He, M.D., Ph.D., is a professor of surgery at the Johns Hopkins University School of Medicine and is the Division Chief of Hepato-Pancreato-Biliary & Gastrointestinal Surgical Oncology. Dr. He specializes in diseases and tumors of the pancreas, liver, bile duct, and gallbladder. He performs open as well as minimally invasive (robotic and laparoscopic) surgery, including the Whipple procedure. Dr. He received his medical degree from Beijing Medical University and a Ph.D. in oncology from Fudan University Shanghai Medical College. He completed the Halsted general surgery residency training at Johns Hopkins, followed by an ACGME accredited fellowship in complex general surgical oncology at Johns Hopkins. Dr. He is the John Cameron Professor of Alimentary Tract Diseases. Dr. He’s research focuses on personalized treatment through stratifying pancreatic tumors on their genetic features. He holds several patents in anti-cancer vascular targeting agents and has published extensively in peer-reviewed journals and lectured internationally. He serves on several national committees, including the NCCN panel on neuroendocrine tumors and the Alliance for Clinical Trials in Oncology. Dr. He is rated as an Experienced provider by MediFind in the treatment of Malnutrition. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Neuroendocrine Tumor, Cholangiocarcinoma (Bile Duct Cancer), Pancreatectomy, and Pancreaticoduodenectomy. Dr. He is board certified in American Board Of Surgery.