U.S. Department of Health and Human Services

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

David Chascsa2.jpgDavid M. H. Chascsa, M.D.

Residency: University of Colorado, Denver, CO
Medical Degree: Georgetown University School of Medicine, Washington, DC
Year in Program: 3rd year
Research Projects: I have varied research projects covering a spectrum of gastroenterology and hepatology. These projects include: utilization of SmartPill© in the management of patients with gastroesophageal reflux disease; evaluation of the natural history of gastrointestinal and hepatic manifestations of patients with autoimmune polyendocrinopathy ectodermal dystrophy and candidiasis (APECED); and the use of noninvasive means to assess portal hypertension.

    Derrick Tang2.jpgDerek Tang, M.D.

    Residency: Temple University Hospital, Philadelphia, PA
    Medical Degree: Tulane University School of Medicine, New Orleans, LA
    Year in Program: 3rd year
    Research Projects: I am currently involved in two major research projects. The first involves evaluating the presentation, natural history, and diagnosis of familial midgut carcinoid tumor -- an entity that is distinct from sporadic carcinoid tumors. The second encompasses elucidating the association of Helicobacter pylori infection with metabolic syndrome and non-alcoholic fatty liver disease. My other areas of interest are colonoscopy screening and endoscopic safety.

    Hawwa Alao, M.D.

    Fellowship: Clinical Hepatology Fellowship, NIDDK, Bethesda, MD
    Residency: University of Massachusetts, Worcester, MA
    Medical Degree: St. George's University of Medicine, Grenada, West Indes
    Year in Program: 2nd year
    Research Projects: I am currently involved in both gastroenterology and hepatology research. These include using sickle cell liver disease as a model in understanding factors that predict progression and regression of liver disease, study of the role of miRNA in the interferon pathway and hepatitis C, utilization of SmartPill© in the management of gastroesophageal reflux disease, use of monoclonal antibody in the treatment of hypereosinophilic syndrome/eosinophilic gastrointestinal disorder and the role of gastrointestinal immune cells in idiopathic CD4 lymphopenia.

    Anna Strongin, M.D.

    Residency: Thomas Jefferson University Hospital, Philadelphia, PA
    Medical Degree: University of Maryland School of Medicine, Baltimore, MD
    Year in Program: 2nd year
    Research Projects: I am currently involved in two clinical trials; one evaluating the utility of a novel gastrin antagonist in patients with gastric carcinoid tumors and the other evaluating a the effect of a proton pump inhibitor in Barrett's esop
    hagus.  My other research projects include the medical management of gastrointestinal manifestations in chronic granulomatous disease and the association between elevated tryptase levels and irritable bowel syndrome.



    Recent Fellows 

    Nancy Ho, M.D.Nancy Ho, M.D.


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






    Jim Chou, M.D.Jim Y. Chou, M.D.


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








    Mark T. Voellinger, M.D.Mark T. Voellinger, M.D.

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




    Thomas Simcox, M.D.

    Thomas Simcox, M.D.

    Current Position: Practicing Gastroenterologist, Anne Arundel, MD


     
     
     
     



    Preet Bagi, M.D.Preet Bagi, M.D.

    Current Position: Inflammatory Bowel Disease Advanced Fellowship - University of California, San Diego Inflammatory Bowel Disease Center
      

     



    Christopher Koh, M.D. M.H.Sc.Christopher Koh, M.D. M.H.Sc.

    Current Position: Staff Clinician, Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
     





    Sajneet Khangura, M.D.Sajneet Khangura, M.D.

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





    Apurva Trivedi, M.D.Apurva Trivedi, M.D.

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


     




    ManishArora Manish Arora, M.B.B.S.

    Current Position: Practicing Gastroenterologist, Decatur, AL
     






    Douglas Weinstein, M.D.Douglas Weinstein, M.D.

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






    Apurva Modi, M.D.Apurva Modi, M.D.

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






    Grishma Joy, M.D.

    Current Position: Practicing Gastroenterologist, Columbia, MD                            

                                                 




     

    Erik von Rosenvinge, M.D.Erik von Rosenvinge, M.D.

    Current Positions: Chief, Gastroenterology Section, VA Maryland Health Care System, Department of Veterans Affairs
    Assistant Professor of Medicine, University of Maryland School of Medicine





      Lakshmi Gopal, M.D.   

      Current Position: Practicing Gastroenterologist, Pensacola, FL

                                      

                                                            
        

       


      MMichael D Yao M.D.ichael D Yao, M.D. 

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





      Alireza Tabesh, M.D.

      Current Position: Practicing Gastroenterologist, Los Angeles, CA
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