Education & Training

Medical School

Al Arab Medical University

Residency

Internal Medicine

  • University of New Mexico

Fellowship

Gastroenterology

  • University of Florida College of Medicine

Hepatology

  • Mayo Clinic

Boards

American Board of IM - Gastroenterology
American Board of IM - Transplant Hepatology

Insurances

MU Health Care participates with most major managed care organizations. To find out whether MU Health Care is a participating provider in your insurance plan or network, or for information on co-payments and deductibles, please contact your insurance carrier directly.

Academic Information

Professor of Clinical Medicine
Interim Director, Division of Gastroenterology and Hepatology
Director of Digestive Health Center
Director of Advanced Therapeutic Endoscopy
Director of Hepatology Fellowship Program

Research Interests

  • Biliary Disease
  • Colonoscopy
  • Endoscopy
  • Gastrointestinal Disorders
  • Hepatitis
  • Hepatology
  • Jaundice
  • Liver Cancer
  • Liver Disease
  • Pancreatic Diseases

Areas of Expertise

  • Liver Disease and treatment of hepatocellular carcinoma
  • Advanced therapeutic and innovative endoscopy
  • Endoscopic mucosal resection (EMR) of early esophageal and colorectal tumors
  • Endoscopic overstitch
  • Celiac Plexus block
  • Neurolysis
  • Biliary, pancreatic disease, and endoscopic management
  • Pancreatic mucinous cysts ablations
  • Pancreatic adenocarcinoma
  • ERCP
  • Cholangioscopy
  • Pancreatoscopy
  • Cystgastrostomy
  • EUS-guided biliary drainage
  • Bariatric endoscopy
  • Endoscopic management of post bariatric complications

Awards & Honors

  • 05/2019 Most Outstanding Pre-Clinical Educator Award, Medical Student Affairs Council
  • 05/2018 Most Outstanding Pre-Clinical Educator Award, Medical Student Affairs Council
  • 02/2018 The Jane Hickman Teaching Award, Nomination
  • 02/2018 Curriculum Board Faculty Excellence in Teaching Award-Outstanding Pre-Clerkship Faculty Educator
  • 10/2017 Fellow of the American Association for the Study of Liver Disease (FAASLD)
  • 5/2016 Paul C.J. Sun Distinguished Faculty Award (Medical Student Affairs Council, May 13, 2016)
  • 5/2016 Excellence in Education, Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 13, 2016)
  • 3/2016 Endoscopic Mucosal Resection- ASGE Star Certificate
  • 11/2015 Barrett's Endotherapy- ASGE Star Certificate
  • 5/2013 Investiture Marshals (Medical Student Graduates, class 2013, May 18, 2013)
  • 5/2013 Excellence in Education, Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 17, 2013)
  • 5/2013 Excellence in Education, Clinical Faculty Award (Medical Student Affairs Council,
    May 17, 2013)
  • 6/2012 American Medical Student Association National Golden Apple Award for Teaching Excellence (Nomination)
  • 5/2012 The Jane Hickman Teaching Award (Nomination)
  • 5/2012 Excellence in Education, Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 11, 2012)
  • 5/2012 Curriculum Board Citation of Merit Award (MU Curriculum board)
  • 6/2011 American Medical Student Association National Golden Apple Award for Teaching Excellence (Nomination)
  • 5/2011 Golden Apple Award (American Medical Student Association, May, 13, 2011)
  • 5/2011 Outstanding Lecturer, Pre-Clinical Cur­ riculum Award (MU Curriculum board)
  • 5/2011 Excellence in Education, Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 13, 2011)
  • 3/2011 President's Award for Innovative Teaching (Nomination)
  • 5/2011 The Jane Hickman Teaching Award (Nomination)
  • 5/2011 The Committee on Student Promotions (CSP) (Nomination)
  • 5/2010 Alpha Omega Alpha inductee
  • 5/2010 Outstanding Lecturer, Pre-Clinical Curriculum Award (MU Curriculum board)
  • 5/2010 Excellence in Education, Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 14, 2010)
  • 6/2009 Order of Socrates II, MU Medical School
  • 5/2009 Most Outstanding Pre-Clinical Educator Award (Medical Student Affairs Council, May 15, 2009)
  • 5/2009 Golden Apple Award (American Medical Student Association, May, 15, 2009)
  • 4/2009 Alpha Omega Alpha Award (Nomination)
  • 1/2009 Diplomate, American Board of Internal Medicine - Transplant Hepatology
  • 10/2008 Pentax ASGE Video Editing Scholarship Program
  • 5/2008 Golden Apple Award (American Medical Student Association, May, 15, 2008)
  • 4/2008 Alpha Omega Alpha Award (Nomination)
  • 11/2007 Diplomate, American Board of Internal Medicine - Gastroenterology
  • 12/2006 Master in Public Health (Summa Cum Laude)
  • 3/2003 North American Conference for Gastroenterology Fellows (NACGF) Travel Award
  • 10/2002 Diplomate, American Board of Internal Medicine
  • 8/2002 Instructor of Medicine, Mayo Clinic, Rochester

Current Professional Societies

  • 2015 American Gastroenterology Association (AGA)
  • 2015 American College of Gastroenterology (ACG)
  • 2010 Alpha Omega Alpha Honor Medical Society (AnA)
  • 2007 American Society for Gastrointestinal Endoscopy (ASGE)
  • 2002 American Association for the Study of Liver Disease (AASLD)

Publications

Abstracts and Presentations

  • Hiroyuki Takamaru, Yutaka Saito, Kazumasa Kawashima, Hourin Cho, Ghassan M. Hammoud, Masau Sekiguchi, Masayoshi Yamada, Taku Sakamoto, and Takahisa Matsuda. Cold snare polypectomy of colorectal lesions less than 10 mm is safe in patients on anticoagulation therapy: a large scale analysis using the Japan endoscopy database.
  • Yousef MH, Albarrak AA, Tahan V, Romana BS, Yousef Mousa, Esebua M, Samiullah S, Ibdah JA, Hammoud GM. Utility of endoscopic ultrasound-guided fine needle aspiration in the evaluation of periportal lymphadenopathy in patients with chronic liver disease. Abstract # 3154054. Digestive Disease Week® (DDW) 2019 at the San Diego Convention Center in San Diego, CA, May 18-21, 2019 (accepted)
  • Dailey FE, Turse EP, Hammoud GM, Tahan V. The clinical utility of endoscopic ultrasound for rectal and perirectal lesions: a large center experience. Abstract # 3137271. Digestive Disease Week® (DDW) 2019 at the San Diego Convention Center in San Diego, CA, May 18-21, 2019 (accepted)
  • Romana BS, Yousef MH, Jasmine Hundal, Boumitri C, Tahan V, Samiullah S, Hammoud GM. The outcome of endoscopic mucosal resection of cecal polyps involving the appendiceal orifice. Digestive Disease Week® (DDW) 2019 at the San Diego Convention Center in San Diego, CA, May 18-21, 2019 (accepted)
  • Romana BS, Chela H, Yousef MH, Tahan V, Ibdah JA, Samiullah S, Hammoud GM. Mo2004: Outcome of endoscopic mucosal resection of cecal polyps: a retrospective study. Digestive Disease Week® (DDW) 2018 at the Walter E. Washington Convention Center in Washington, DC, June 2-5, 2018
  • Romana BS, Hudhud D, Hammoud GM, Tahan V, Ibdah JA, Fatima Samad, Samiullah S. Mo2003: Safety of transesophageal echocardiography in patients with gastroesophageal varices. Digestive Disease Week® (DDW) 2018 at the Walter E. Washington Convention Center in Washington, DC, June 2-5, 2018
  • Yousef MH, Albarrak AA, Tahan V, Romana BS, Esebua M, Samiullah S, Ibdah JA, Hammoud GM. Mo1311: Utility of endoscopic ultrasound-guided fine needle aspiration in the evaluation of enlarged periportal lymph nodes. Digestive Disease Week® (DDW) 2018 at the Walter E. Washington Convention Center in Washington, DC, June 2-5, 2018
  • Albarrak AA, Yousef MH, Hammoud GM, Samiullah S, Ibdah JA, Tahan V. Mo1094: The utility of endoscopic overstitch for the prevention of stent migration in the upper gastrointestinal tract. Digestive Disease Week® (DDW) 2018 at the Walter E. Washington Convention Center in Washington, DC, June 2-5, 2018
  • Cockerell C, Mankoo R, Dailey FE, Samiullah S, Hammoud GM, Tahan V. P0282 - When Esophagus Met Bronchus: Not a Love Story. American College of Gastroenterology (ACG) 2018 at the Pennsylvania Convention Center in Philadelphia, PA, October 5- 10, 2018
  • Romana BS, Mankoo R, Tahan V, Samiullah S, Hammoud GM. P0190 - Collision Tumor: A Unique Combination of Tubulovillous Adenoma and Goblet Cell Carcinoid of Colon. American College of Gastroenterology (ACG) 2018 at the Pennsylvania Convention Center in Philadelphia, PA, October 5- 10, 2018
  • Romana B, Chela H, Yousef M, Tahan V, Ibdah J, Samiullah S, Hammoud G. Outcomes of Endoscopic Mucosal Resection of Cecal Polyps: A Retrospective Study. Gastroenterology May 2018: Supplementary
  • Romana B, Hudhud D, Hammoud G, Tahan V, Ibdah JA, Tahan V. The Utility of Endoscopic Mucosal Resection of Cecal Polyps: A Retrospective Study. Gastroenterology May 2018: Supplementary.
  • Cockerell C, Romana BS, Hammoud GM, Tahan V. All the Usual Suspects: A Case of Acute Necrotizing Esophagus. World Congress of Gastroenterology ACG 2017 at the Orange County Convention Center in Orlando, Florida, October 13-18, 2017
  • Yousef MH, Chela H, Romana BS, Hammoud GM, Tahan V. Utility of combined endoscopic therapy with balloon dilation and onabotulinum toxin A injection in a patient with gastroparesis secondary to hypertrophic pylorus. World Congress of Gastroenterology ACG 2017 at the Orange County Convention Center in Orlando, Florida, October 13-18, 2017
  • Mohamad H. Yousef, Harleen Chela, Bhupinder Romana, Ghassan Hammoud, Veysel Tahan. Utility of combined endoscopic therapy with balloon dilation and onabotulinum toxin A injection in a patient with gastroparesis secondary to hypertrophic pylorus. World Congress of Gastroenterology at ACG 2017. October 13-18, 2017, Orange County Convention Center, Orlando, Florida, USA.
  • Boumitri C, Hasanin M, De La Torre R, Hammoud G (2016). The Utility of Endoscopic Overstich in Bariatric Patients at a Tertiary Care Center. Society of American Gastrointestinal and Endoscopic Surgery (SAGES) March 16-19, 2016. Boston, MA.
  • Chela H, MD, Talaat N, Siddique S, MD, AshrafI, Romana B, Hammoud G. Brief Education of PCPs Can Help Reduce the Number of Patients Unscreened for HCV: A QualityImprovement Project. (2015) American Journal of Gastroenterology 2015 Oct; 1 O(Sl): S340(1233).
  • Talaat N, Hulbert A, Chela H, Bartkoski S, Davis J, Hammoud G (2015). Non-adherence to HCV Screening Among Persons Born Between 1945-1965: Family Medicine vs. internal Medicine. American Journal of Gastroenterology  2015 Oct;110(S1): S340(1850).
  • Sathyamurthy A, Hammoud G, Ibdah JA, (2015). Ruptured Hepatic Adenoma Associated with an Ectopic Pregnancy. American Journal of Gastroenterology 2015 Oct;110(S1):S340 (779).
  • Romana, B, Siddique S, AshrafI, De La Torre R, Hammoud G (2015). Endoscopic Stricturotomy and Stent Placement for Refractory Gastrojejunal Anastomotic Stricture in a Patient With Roux-en-Y Gastric Bypass Surgery: A Case Report. American Journal of Gastroenterology  2015 Oct;110(S1):S340 (909).
  • Ng, Dennis, MD, Ramaswamy, Archana MD; Richardson, Nobert, MD; de la Torre, Roger, MD; Hammoud, Ghassan, Technical Feasibility of Laparoscopic-ERCP in Roux-En-Y Gastric Bypass (REYGB) Surgery Patients. American College of Surgeons, 2013 (submitted)
  • Obai Abdullah, Sathyamurthy A, Hammoud G. Prophylactic Antibiotics in Patients with Cirrhosis and Gastrointestinal Bleeding. Is there adherence to The AASLD Guidelines? DDW 2013 (submitted)

Journal Articles

  • Ali AH, Panchal S, Rao DS, Gan Y, Al-Juboori A, Samiullah S, Ibdah JA, Hammoud GM. ‘’The efficacy and safety of endoscopic ultrasound-guided liver biopsy versus percutaneous liver biopsy in patients with chronic liver disease: a retrospective single-center study.’’ J Ultrasound. 2020 Mar 5. doi: 10.1007/s40477-020-00436-z.
  • Khare T, Khare S, Angdisen JJ, Zhang Q, Stuckel A, Mooney BP, Ridenhour SE, Gitan RS, Hammoud GM, Ibdah JA. ‘’Defects in long chain 3-hydroxy acyl-CoA dehydrogenase lead to hepatocellular carcinoma: A novel etiology of hepatocellular carcinoma.’’Int J Cancer. 2020 Mar 1. doi: 10.1002/ijc.32943.
  • A rare case of plexiform fibromyxoma in stomach: FNA diagnosis with histological correlation and differential diagnoses. Gan Y, Hammoud G, Esebua M. Ann Diagn Pathol. 2020 Feb;44:151453. doi: 10.1016/j.anndiagpath.2019.151453. Epub 2019 Dec 14. PMID: 31864161
  • First-in-class fatty acid synthase inhibitor TVB-2640 reduces hepatic de novo lipogenesis in males with metabolic abnormalities. Syed-Abdul MM, Parks EJ, Gaballah AH, Bingham K, Hammoud GM, Kemble G, Buckley D, McCulloch W, Manrique CM. Hepatology. 2019 Oct 20. doi: 10.1002/hep.31000. [Epub ahead of print] PMID: 31630414
  • Esebua M, Binz K, Hammoud GM. Mycobacterium Avium-Intracellulare Granulomatous Pancreatitis in HIV-Infected Patient: A Rare Case Report of EUS FNA. Clin Gastroenterol Hepatol. 2019 May 8. pii: S1542-3565(19)30505-1. doi: 10.1016/j.cgh.2019.04.073.
  • Ali, Ahmad, Al-Juboori, A, Rao, D, Ibdah, J, Deepa, N, Gaballah, A, Hammoud, G. Clinical Features and Outcomes of Patients with Primary Sclerosing Cholangitis at the University of Missouri-Columbia-A retrospective Study. Internal Hepatology. Submitted 2019
  • Esebua, M, Binz, K, Hammoud G, Mycobacterium Avium-Intracellulare (MAI) Granulomatous Pancreatitis in HIV Patient: A Rare Case Report of EUS FNA. Clinical Gastroenterology and Hepatology, 2019. Accepted
  • Hammoud GM, Quick J, Samiullah S, Rao D, Ibdah JA. Endoscopic full-thickness resection of a long intussuscepted appendix by use of a colonoscope. VideoGIE. 2018 Nov 23;4(1):34-36. doi: 10.1016/j.vgie.2018.10.001
  • Jalil AAA, Hammoud G, Ibdah JA, Samiullah S. Removal of Esophageal Variceal Bands to Salvage Complete Esophageal Obstruction. Clin Endosc. 2018 Sep;51(5):491-494. PMID: 30130842
  • Hammoud GM, Ibdah JA. Are we getting closer to understanding intratumor heterogeneity in hepatocellular carcinoma? HepatoBiliary Surg Nutr 2016;5(2):188-190.
  • Hammoud GM, Almashhrawi A, Ibdah JA.Usefulness of endoscopic ultrasound-guided fine needle aspiration in the diagnosis of hepatic, gallbladder and biliary tract Lesions. World J Gastrointest Oneal. 2014 Nov 15;6(11):420-9.
  • Hammoud GM, Ibdah JA. Utility of endoscopic ultrasound in patients with portal hypertension. World J Gastroenterol. 2014 Oct 21;20(39):14230-6.
  • Hammoud, GM, Ibdah JA. Liver transplantation. Greene County Medical Society Journal (2014), 72(10),6-8.
  • Hammoud GM, Hammad H, Ibdah JA. Endoscopic assessment and management of early esophageal adenocarcinoma. World J Gastrointest Oneal. 2014 Aug 15;6(8):275-88.
  • Choudhary A, Winn J, Siddique S, Arif M, Arif Z, Hammoud GM, Puli SR, Ibdah JA, Bechtold M.  Effect of precut sphincterotomy on post­ endoscopic retrograde cholangiopancreatography pancreatitis: a systematic review and meta-analysis. World J Gastroenterol. 2014 Apr 14;20(14):4093-101.
  • Hammoud GM, Ibdah JA. Preeclampsia-induced Liver Dysfunction, HELLP syndrome, and acute fatty liver of pregnancy. Clin Liv Dis, 2014 Sep 4(3): 69-73.
  • Hammoud GM, Almashhrawi AA, Ahmed KT, Rahman R, Ibdah JA. Liver diseases in pregnancy: liver transplantation in pregnancy. World J Gastroenterol. 2013 Nov 21;19(43):7647-51.
  • Ahmed KT, Almashhrawi AA, Rahman RN, Hammoud GM, Ibdah JA. Liver diseases in pregnancy: diseases unique to pregnancy. World J Gastroenterol. 2013 Nov 21;19(43):7639-46.
  • Almashhrawi AA, Ahmed KT, Rahman RN, Hammoud GM, Ibdah JA. Liver diseases in pregnancy: diseases not unique to pregnancy. World J Gastroenterol. 2013 Nov 21;19(43):7630-8.
  • Lyons DA, Coberly EA, Hammoud GM, Nicholl Case report of pancreatic dermoid cyst: can fine needle aspiration make the diagnosis? JOP. 2013 Nov 10; 14(6):653-6.
  • Sathyamurthy A, Choudhary A, Ng D, Okponobi S, Diaz-Arias A, Grewal A, Hammoud GM. Obstructive jaundice due to a rare periampullary tumor. World J Gastrointest Oncol. 2013 Oct 15;5(10):195-7.
  • Rahman R, Hammoud GM, Almashhrawi AA, Ahmed KT, Ibdah JA.Primary hepatocellular carcinoma and metabolic syndrome: An update. World J Gastrointest Oncol. 2013 Sep 15;5(9):186-94.

Book Chapters

  • Hammoud GM, Almashhrawi AA, Ahmed KT, Rahman R, Ibdah JA. Liver diseases in pregnancy: liver transplantation in pregnancy. In World Clinical Gastroenterology (1st ed). Ma L, Chua MS, So S (eds). 2014  (ISBN  978-0-9914430-0-0).
  • Ahmed KT, Almashhrawi AA, Rahman RN, Hammoud GM, Ibdah JA. Liver diseases in pregnancy: diseases unique to pregnancy. In World Clinical Gastroenterology (1st ed). Ma L, Chua MS, So S (eds). 2014 (ISBN  978-0-9914430-0-0).
  • Almashhrawi AA, Ahmed KT, Rahman RN, Hammoud GM, Ibdah JA. Liver diseases in pregnancy: diseases not unique to pregnancy. Liver diseases in pregna1cy: diseases unique to pregnancy. In World Clinical Gastroenterology (1st  ed). Ma L, Chua MS, So S (eds). 2014 (ISBN 978-0-9914430-0-0).
  • Rahman R, Hammoud GM, Almashhrawi AA, Ahmed KT, Ibdah JA. Primary hepatocellular carcinoma and metabolic syndrome: An update. In World Clinical Gastroenterology (1st ed). Ma L, Chua MS, So S (eds).  2014  (ISBN  978-0-9914430-0-0).
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