Nanlong "Nathan" Liu, M.D.


Nanlong "Nathan" Liu, M.D.

  • Assistant Professor of Medicine
UofL Physicians Outpatient Center
401 East Chestnut Street, Ste. 310
Louisville, KY 40202

502-852-6991 - Academic Office
502-588-4600 - Patient Appointments

Clinical Expertise
Advanced Endoscopy; ERCP; EUS; ESD/EMR; POEM; G-POEM; Third Space Endoscopy; Bariatrics; Endoscopic Sleeve; Advanced Luminal Resection

Board Certifications

  • American Board of Internal Medicine -
    Internal Medicine / Gastroenterology

Education and Training

  • Medical School: University of Louisville
  • Residency: University of Louisville Hospital
  • Fellowships: University of Louisville (Gastroenterology); University of Florida (Advanced Endoscopy & Submusocal )

Featured Publications

  • Heckroth M, Eiswerth M, Elmasry M, Gala K, Cai W, Diamond S, Shine A, Liu D, Liu N, Tholkage S, Kong M, Parajuli D. Serrated polyp detection rate in colonoscopies performed by gastrointestinal fellows. Ther Adv Gastrointest Endosc. 2022 Dec 12;15:26317745221136775. doi: 10.1177/26317745221136775. PMID: 36531201; PMCID: PMC9749503.
  • Yang D, Draganov PV, King W, Liu N, Sarheed A, Bhat A, Jiang P, Ladna M, Ruiz NC, Wilson J, Gorrepati VS, Pohl H. Margin marking before colorectal endoscopic mucosal resection and its impact on neoplasia recurrence (with video). Gastrointest Endosc. 2022 May;95(5):956-965. doi: 10.1016/j.gie.2021.11.023. Epub 2021 Nov 30. PMID: 34861250.
  • Yang D, Perbtani YB, Loeb J, Liu N, Draganov PV, Estores DE, Lauzardo M, Maurelli A, Lednicky JA, Morris JG. Detection of SARS-CoV-2 in the gastrointestinal tract among patients with negative nasopharyngeal COVID-19 testing prior to endoscopy. Endosc Int Open. 2021 Aug;9(8):E1276-E1282. doi: 10.1055/a-1490-9234. Epub 2021 Jul 16. PMID: 34447876; PMCID: PMC8383081.
  • Gala K, Desai V, Liu N, Omer EM, McClave SA. How to Increase Muscle Mass in Critically Ill Patients: Lessons Learned from Athletes and Bodybuilders. Curr Nutr Rep. 2020 Dec;9(4):369-380. doi: 10.1007/s13668-020-00334-0. PMID: 33098051.
  • Liu N, Yang D, Draganov PV. Endoscopic Stenting for Malignant Hilar Biliary Obstruction: After You Double Down, Are You In or Out? Dig Dis Sci. 2020 Dec;65(12):3428-3430. doi: 10.1007/s10620-020-06249-8. PMID: 32297066.
  • Vatsalya V, Kong M, Cave MC, Liu N, Schwandt ML, George DT, Ramchandani VA, McClain CJ. Association of serum zinc with markers of liver injury in very heavy drinking alcohol-dependent patients. J Nutr Biochem. 2018 Sep;59:49-55. doi: 10.1016/j.jnutbio.2018.05.003. Epub 2018 May 12. PMID: 29960116; PMCID: PMC6129416.
  • Liu N, Abell T. Gastroparesis Updates on Pathogenesis and Management. Gut Liver. 2017 Sep 15;11(5):579-589. doi: 10.5009/gnl16336. PMID: 28535580; PMCID: PMC5593319.
  • Chaudhary D, Ahmed S, Liu N, Marsano-Obando L. Acute Liver Failure from Herpes Simplex Virus in an Immunocompetent Patient Due to Direct Inoculation of the Peritoneum. ACG Case Rep J. 2017 Feb 15;4:e23. doi: 10.14309/crj.2017.23. PMID: 28286789; PMCID: PMC5340723.