Current & Recent Gastroenterology Fellows

Learn more about current and recent University of Maryland/NIH Clinical Scholars Gastroenterology Fellowship Program fellows below. You can also view a list of recent Gastroenterology Fellow Publications to learn more about research project findings.

Current Fellows

Photo of Samuel A. Schueler
Samuel A. Schueler, M.D.
Clinical Fellow

Chief Residency: Boston University School of Medicine, Boston, MA

Residency: Boston University School of Medicine, Boston, MA

Medical Degree: SUNY Upstate Medical University, Syracuse, NY

Year in Program: 3rd year

Research Projects: My research projects focus on conditions that predispose our patients to gastrointestinal malignancies. I am currently evaluating novel endoscopic methods for early detection of signet ring cell adenocarcinomas in patients with CDH1 gene mutation predisposed to hereditary diffuse gastric cancer (HDGC). I am also analyzing how we care for patients with multiple endocrine neoplasia type 1 with Zollinger-Ellison syndrome (MEN1-ZES), with a focus on improving how we monitor gastric acid suppression endoscopically and clinically in this cohort. I am interested in conditions that predispose patients to developing gastric intestinal metaplasia. I also study the gastrointestinal manifestations in patients with autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED), and follow a cohort of patients with familial small bowel carcinoid tumors.

Photo of Sonia L. Taneja
Sonia L. Taneja, M.D.
Clinical Fellow

Residency: George Washington University, Washington, DC

Medical Degree: Virginia Commonwealth University School of Medicine, Richmond, VA

Year in Program: 3rd year

Research Projects: My current research projects include evaluating the presentation, natural history and diagnosis of familial midgut carcinoid tumors and colon cancer screening in various populations. I am also interested in studying the role of the microbiome in MEN/ZE, chronic granulomatous disease and chronic liver diseases.

photo of Sumona Bhattacharya
Sumona Bhattacharya, M.D.
Clinical Fellow

Residency: Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ

Medical Degree: Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA

Year in Program: 2nd Year

Research Projects: My primary research interests are in inflammatory bowel disease and the similar gastrointestinal involvement seen in patients with chronic granulomatous disease. I am currently working on projects in these areas including telemedicine in inflammatory bowel disease and several aspects of gastrointestinal disease in chronic granulomatous patients including studying their small bowel disease, characterizing radiographic findings, and understanding gut dysmotility. Additionally, I am involved in the care of and research in patients with Zollinger-Ellison syndrome and familial carcinoid syndrome.

Photo of Monica Passi
Monica Passi, M.D.
Clinical Fellow

Residency: North Shore University/ LIJ Medical Center (Northwell) Internal Medicine Residency Program, Long Island, NY

Medical Degree: The George Washington University School of Medicine and Health Sciences, Washington, DC

Year in Program: 2nd Year

Research Projects: My research interests span multiple areas of gastroenterology including the evaluation of neoplasms and premalignant lesions of the upper GI tract, the role of the microbiome in chronic GI conditions as well as the pathogenesis of obesity and its implications on certain GI conditions. My current research projects include evaluating the presentation, natural history and diagnosis of familial midgut carcinoid tumors and identifying factors influencing the progression of gastric intestinal metaplasia. Other projects I am involved in include the clinical assessment of gastrointestinal motility impairment in individuals with type 1 and 2 myotonic dystrophy.

Recent Fellows

Ben Da, M.D.
Clinical Fellow

Current Position: Transplant Hepatology Advanced Fellowship – Icahn School of Medicine at Mount Sinai, New York, NY.

Natasha Kamal, M.D.
Clinical Fellow

Current Position: Inflammatory Bowel Disease Advanced Fellowship – University of Maryland Medical Center, Baltimore, MD.

Ehsan Chitsaz, M.D., M.H.Sc.
Clinical Fellow

Current Positions: Metrohealth Medical Center, Cleveland, OH

Assistant Professor of Medicine - Case Western Reserve University School of Medicine

Bryan Curtin, M.D., M.H.Sc.
Clinical Fellow

Current Position: Neurogastroenterology and Motility Advanced Fellowship – Augusta University Digestive Health Center, Augusta, GA.

Hawwa Alao, M.D.
Clinical Fellow

Current Positions: Louis Stokes Cleveland VA Medical Center, Cleveland, OH

Assistant Professor of Medicine - Case Western Reserve University School of Medicine

Anna Strongin, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Capital Digestive Care, Rockville, MD

David M. H. Chascsa, M.D.
Clinical Fellow

Post Fellowship Training: Transplant Hepatology Advanced Fellowship - Mayo Clinic, Scottsdale, AZ

Current Position: Senior Associate Consultant, Division of Gastroenterology and Hepatology - Mayo Clinic, Scottsdale, AZ

Assistant Professor of Medicine - Mayo Clinic College of Medicine and Science

Derek M. Tang, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Kaiser Foundation Hospital - Orange County, Anaheim, CA

Nancy Ho, M.D
Clinical Fellow

Current Position: Assistant Professor of Medicine, Department of Gastroenterology, Oregon Health & Science University, Portland, OR

Jim Y. Chou, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Kaiser Foundation Hospital, Panorama City, CA

Mark T. Voellinger, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Ohio Valley Medical Center, Wheeling, WV

Thomas Simcox, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Anne Arundel, MD

Preet Bagi, M.D.
Clinical Fellow

Post Fellowship Training: Inflammatory Bowel Disease Advanced Fellowship - University of California, San Diego Inflammatory Bowel Disease Center

Current Position: Saddleback Medical Group, Laguna Hills, CA

Clinical Fellow

Current Position: Deputy Clinical Director, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health

Sajneet Khangura, M.D.
Clinical Fellow

Current Position: Assistant Professor – Clinical Department of Medicine, Division of Digestive Diseases, The University of Mississippi Medical Center, Jackson, MS

Apurva Trivedi, M.D.
Clinical Fellow

Current Position: Assistant Professor – Texas A&M Health Science Center College of Medicine, Department of Gastroenterology, Scott & White Healthcare, Killeen, TX

Manish Arora, M.B.B.S.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Decatur, AL

Douglas Weinstein, M.D.
Clinical Fellow

Current Position: Staff Physician, Philadelphia VA Medical Center, Philadelphia, PA

Apurva Modi, M.D.
Clinical Fellow

Current Position: Transplant Hepatologist, Baylor All Saints Medical Center, Fort Worth, TX

Grishma Joy, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Columbia, MD

Erik von Rosenvinge, M.D.
Clinical Fellow

Current Positions: Chief, Gastroenterology Section, VA Maryland Health Care System, Department of Veterans Affairs

Associate Professor of Medicine, University of Maryland School of Medicine

Lakshmi Gopal, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Pensacola, FL

Michael D. Yao, M.D.
Clinical Fellow

Current Positions: Chief, Gastroenterology and Hepatology Section. Washington DC VA Medical Center. Associate Professor of Medicine, George Washington University.

Alireza Tabesh, M.D.
Clinical Fellow

Current Position: Practicing Gastroenterologist, Los Angeles, CA