U.S. Department of Health and Human Services

Clinical Research Section

T. Jake Liang, M.D., Chief

Section Staff


Photo of T. Jake Liang, M.D. 

T. Jake Liang, M.D., Chief, Liver Diseases Branch

M.D. – Harvard Medical School, Boston, MA
Internal Medicine Residency – New York University/Bellevue Hospital Center, New York, NY
Gastroenterology Fellowship – Massachusetts General Hospital, Boston, MA

Photo of Edward Doo, M.D.Edward Doo, M.D., Director, Liver Diseases Research Program

M.D. – Cornell University Medical College, New York, NY
Internal Medicine Residency – The New York Hospital-Cornell Medical Center, New York, NY

 

Photo of Marc Ghany, M.D.

Marc Ghany, M.D., Staff Clinician, Liver Diseases Branch

M.D. – Royal College of Surgeons in Ireland, Dublin, Ireland
Internal Medicine Residency – Hospital of St. Raphael, New Haven, CT
Gastroenterology Fellowship – Tulane University School of Medicine, New Orleans, LA
Liver Diseases Fellowship – NIDDK, Bethesda, MD
M.H.Sc. – Duke University School of Medicine, Durham, NC

Photo of Theo Heller, M.D.

Theo Heller, M.D., Tenure Track Clinical Investigator, Liver Diseases Branch

M.D. – University of Witwatersrand Medical school
Internal Medicine Residency – Georgetown University Hospital
Viral Hepatitis Fellowship – NIAID, Bethesda, MD
Gastroenterology Fellowship – University of Maryland School of Medicine
Liver Diseases Fellowship – NIDDK, Bethesda, MD

Photo of Jay Hoofnagle, M.D.

Jay ​Hoofnagle, M.D., Director, Liver Disease Research Branch

M.D. – Yale University School of Medicine, New Haven, CT
Internal Medicine Residency – University of Virginia Health System, Charlottesville, VA
Internal Medicine Residency – VA Medical Center, Washington, DC
Gastroenterology Fellowship – VA Medical Center, Washington, DC

nih_kohchris_Koh.jpgChristopher Koh, M.D. M.H.Sc., Staff Clinician, Liver Diseases Branch

M.D. – Saba University School of Medicine, Netherlands-Antilles
M.H.Sc. - Duke University School of Medicine, Durham, NC
Internal Medicine Residency – Harbor Hospital, Baltimore, MD
Liver Diseases Fellowship – NIDDK, Bethesda, MD
Gastroenterology Fellowship – University of Maryland/NIH Scholars Program, Baltimore, MD & Bethesda, MD

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Yaron Rotman, M.D., Assistant Clinical Investigator, Liver Diseases Branch

M.D. – Hebrew University Hadassah Medical School, Jerusalem, Israel
M.Sc. – Hebrew University Hadassah Medical School, Jerusalem, Israel
Internal Medicine Residency – Rabin Medical Center, Petach-Tiqwa, Israel
Gastroenterology Fellowship – Rabin Medical Center, Petach-Tiqwa, Israel
Liver Diseases Fellowship – NIDDK, Bethesda, MD

Photo Not Available

Averell H. Sherker, M.D., Scientific Advisor, Viral Hepatitis and Liver Diseases

M.D. – Queens University Faculty of Health Sciences, Kingston, Canada
Internal Medicine Residency – Mt. Sinai Hosptial University, Toronto, Canada
Gastroenterology Fellowship – University of Toronto, Ontario, Canada
Liver Diseases Fellowship – Stanford University, Stanford, CA

nih_Samala.jpgEtzion Ohad, Clinical Fellow

Progression to cirrhosis in patients chronically infected with HCV marks a turning point in disease evolution. Accumulating evidence suggests that gut microbial products translocating across the intestinal wall to the portal blood system may also reach the systemic circulation inducing a global proinflammatory state. My main research interest is in elucidating the mechanisms responsible for this phenomenon, and understanding its contribution to the progression of liver cirrhosis and its complications. Other research interests of mine include, characterizing immune response patterns to HBV vaccine in patients receiving immunosuppressive medications, and understanding the differential metabolic pathways dominating fasting and fed states in NAFLD patients versus healthy controls. 

nih_Alao.jpgShilpa Lingala, M.D., Clinical Fellow

Liver pathology has always fascinated me. After completion of my liver transplant fellowship, I wanted to learn more about research in the field and I believe Liver Diseases Branch at NIH is the best place for such an opportunity. I am interested in viral hepatitis in liver transplant recipients, non-cirrhotic portal hypertension and non-alcoholic fatty liver disease.

nih_Kim.jpgMa Ai Thanda Han, M.D., Clinical Fellow

My research interests focus on hepatitis delta (HDV), hepatic fibrosis and portal hypertension.
Delta hepatitis is the most severe and dreaded form of human viral hepatitis, leading to chronic hepatitis in a high proportion of patients with progression to cirrhosis in 5 to 10 years. Currently, there is no satisfactory therapy nor FDA approved therapy for HDV infection. My research aims on the treatment of chronic delta hepatitis. Additionally, my interest extends to pathogenesis and progression of liver disease in delta hepatitis infected patients. 

Since hepatic fibrosis and consequent portal hypertension can be reversible in some situations with the appropriate treatment, its early detection is important. The current gold standard for the diagnosis is by invasive methods including liver biopsy. I am excited in investigating non-invasive methods to diagnose hepatitis fibrosis and portal hypertension.

Varun TEtzion Ohad, Clinical Fellowakyar, M.D., Clinical Fellow

I came to NIDDK from University of Arizona in Tucson.  The Liver Diseases Branch gives me a unique opportunity to attempt to answer challenging questions about hepatic parenchymal pathology.

In recent years, macrophages have garnered much attention in hepatic fibrogenesis and its subsequent resolution.  However, a lot of questions are left answered regarding the role of our immune system in hepatic inflammation and scar formation. My main scientific research focus is looking at microbial and intrinsic triggers of inflammation and fibrosis in chronic liver disease.  Additionally, my clinical research interest is in using non-invasive techniques to identify stage of hepatic fibrosis in chronic liver disease and to identify the degree of portal hypertension in cirrhosis.


Darlina Sosa, Patient Care Coordinator

 

10 Center Drive, Bldg: 10 CRC, Rm: 4-5722, MSC 16142
T: 301-435-6121
F: 301-435-9160


Nancy Fryzek, BSN, RN, Research Nurse, Specialist
 

10 Center Drive, Bldg: 10 CRC, Rm: 4-5722, MSC 1614
Bethesda, MD 20892
T: 301-435-6122
F: 301-435-9160


Vanessa Haynes-Williams, BSN, RN, Research Nurse, Specialist

 

10 Center Drive, Bldg: 10 CRC, Rm: 4-5722, MSC 1614
Bethesda, MD 20892
T: 301-451-7007
F: 301-435-9160


Elenita M. Rivera, BSN, RN, Research Nurse, Specialist

 

10 Center Drive, Bldg: 10 CRC, Rm: 4-5722, MSC 1614
Bethesda, MD 20892
T: 301-435-6125
F: 301-451-9160


Nevitt, Morris, BSN, RN, Research Nurse, Specialist

 

10 Center Drive, Bldg: 10 CRC, Rm: 4-5722, MSC 1614
Bethesda, MD 20892
T: 301-496-1665
F: 301-435-9160​

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