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Adjunct faculty typically have an academic or research appointment at another institution and contribute or collaborate with one or more School of Medicine faculty members or programs.

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Coskun Ozer Demirtas

Assistant Professor Adjunct of Medicine (Digestive Diseases)
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Assistant Professor Adjunct of Medicine (Digestive Diseases)

Biography

Dr. Coskun Ozer Demirtas is an Associate Professor of Medicine in the Division of Gastroenterology and Hepatology at Marmara University School of Medicine, Istanbul, Türkiye, and an Adjunct Assistant Professor of Medicine (Digestive Diseases) at Yale School of Medicine. He completed his medical education and fellowship training in Gastroenterology and Hepatology at Marmara University and has since been actively engaged in clinical and translational research in chronic liver diseases.

His research focuses on portal hypertension, hepatocellular carcinoma, and the development of noninvasive diagnostic and prognostic tools in hepatology. Dr. Demirtas has authored numerous peer-reviewed publications and has contributed to several international multicenter studies in liver disease and liver cancer.

Beyond his research activities, he holds leadership and educational roles within international hepatology organizations, including the American Association for the Study of Liver Diseases (AASLD), and is actively involved in initiatives advancing education, collaboration, and innovation in hepatology worldwide. His work seeks to bridge clinical practice and research to improve the care of patients with liver diseases.

Outside the clinic, he maintains an active interest in sports and enjoys traveling.

Last Updated on June 21, 2026.

Departments & Organizations

Research

Overview

Dr. Demirtas's research focuses on portal hypertension, hepatocellular carcinoma, and chronic liver diseases, with an emphasis on developing noninvasive diagnostic and prognostic tools—including elastography-based approaches—to advance precision hepatology.

Medical Research Interests

Carcinoma, Hepatocellular; Hypertension, Portal; Liver Cirrhosis; Liver Diseases

Public Health Interests

Cancer

Research at a Glance

Publications Timeline

A big-picture view of Coskun Ozer Demirtas's research output by year.
70Publications
788Citations

Publications

2026

  • Delphi survey to explore core curriculum for training the next generation of hepatologists
    Xu X, Shi Y, Tacke F, Wong V, Li W, Sebastiani G, Newsome P, Romero-Gomez M, Pan C, Castera L, Chai J, Kim W, Valenti L, Yilmaz Y, Win K, Xu X, Ocama P, Ghazinyan H, Al Mahtab M, Hamid S, Lesmana C, Romeo S, Fernandez M, Yu X, Luukkonen P, Takahashi H, Charatcharoenwitthaya P, Boursier J, Homer I, Dao H, Spearman C, Dassanayake S, Ayurzana M, Aghayeva G, Muthiah M, Mendez-Sanchez N, Stedman C, Alswat K, Sharara A, Debzi N, Leite N, Alkhatry M, van Kleef L, Barakat S, Al-Busafi S, Agyei-Nkansah A, Fouad Y, Gracia-Sancho J, Lupsor-Platon M, Ryan J, Chan W, Cortez-Pinto H, Mandorfer M, Duseja A, Papatheodoridis G, Francque S, Byrne C, Targher G, George J, Zheng M, Consortium G, Shi Y, Xu X, Tacke F, Wong V, Li W, Sebastiani G, Newsome P, Romero-Gomez M, Pan C, Castera L, Chai J, Kim W, Valenti L, Yilmaz Y, Win K, Xu X, Ocama P, Ghazinyan H, Al Mahtab M, Hamid S, Lesmana C, Romeo S, Fernandez M, Yu X, Luukkonen P, Takahashi H, Charatcharoenwitthaya P, Boursier J, Homer I, Dao H, Spearman C, Dassanayake S, Ayurzana M, Aghayeva G, Muthiah M, Mendez-Sanchez N, Stedman C, Alswat K, Sharara A, Debzi N, Leite N, Alkhatry M, van Kleef L, Barakat S, Al-Busafi S, Agyei-Nkansah A, Fouad Y, Gracia-Sancho J, Lupsor-Platon M, Ryan J, Chan W, Cortez-Pinto H, Mandorfer M, Duseja A, Papatheodoridis G, Francque S, Byrne C, Targher G, George J, Zheng M, Shaheen A, Sonsuz A, Kha A, Aljumah A, Alotay A, Sobhonslidsuk A, Alqutub A, Alzanbagi A, Alasgarova A, Albillos A, Azmi A, Gomaa A, Uygun A, Shukla A, Mostafa A, Wigg A, Forner A, Aghemo A, Thompson A, Alexopoulou A, Mahgoub A, Tantau A, Ramji A, Hassnine A, Enkhbold A, Elsayed A, Trifan A, Teufel A, Huang A, Armandi A, Arora A, Geerts A, Di Bartolomeo A, Olveira A, Dassanayake A, Cosar A, Abergel A, Carvalho A, Kumar A, Choudhury A, Coilly A, Majumdar A, Jane A, Naghiyev A, Khushuur B, Balaraja S, Norjmaa B, Badamnachin B, Zheng B, Hameed B, Chen B, Tang B, Procopet B, Koh C, Gofton C, Cao Z, Coffin C, Mihai C, Simsek C, Subasinghe C, Yang C, Kranidioti C, Piyarathna C, Xie C, Xu C, Soodoi C, Verslype C, Lange C, Triantos C, Roderburg C, Moreno C, Opio C, Eapen C, Jasirwan C, Engelmann C, Demirtas C, Cijevschi C, Efe C, Gheonea D, Lim D, Matei D, Aguado D, Gantumur D, Abeynayake D, Gökçe D, Oguz D, Karagiannakis D, Samonakis D, Attia D, Abdeltawab D, Elwazzan D, Ji D, Giannini E, bardou-jacquet E, Micah E, Gigi E, Zhakishova E, Sinakos E, Kama E, Chen E, Abdullayeva E, Dumitru E, Cholongitas E, Ridruejo E, Sanai F, Abaalkhail F, Alotaibi F, Fanpu, Higuera-de-la-Tijera F, Ateş F, Aninagyei F, Nery F, Akyüz F, Caprioli F, Åberg F, Courtney F, Braun G, Tontini G, Tosetti G, Wong G, Pennisi G, Kew G, Macedo G, Zhang G, Adali G, Kuriry H, Abdalla H, Simsek H, Alashgar H, Jawa H, Omar H, Kwok H, Yilmaz H, Serag H, Aboelmagd H, Jang H, Lai H, Koncoro H, Reynaert H, Purnomo H, Khidirova H, Ko H, Stefanescu H, Ke-Qin H, Chang H, Yu H, Kim H, Hilmi I, Mani I, Turan I, Sporea I, Vlachogiannakos I, Colle I, Narváez-Rodríguez I, O'Beirne J, Park J, de Silva J, Crespo J, Ampuero J, lal J, Howell J, Li J, Chen J, Lai J, Gu J, Genescà J, Santo J, Wiegand J, Calleja J, Minano J, Hernandez J, Lim J, Mak J, Abraldes J, Turnes J, Luo J, Arab J, Camarero J, Tie J, Xu J, Kei K, Demir K, Balendran K, Lynch K, Muller K, Stuart K, Kalista K, Liu K, Jaafar K, Ainaamani K, Duinkherjav K, Mimidis K, Kiew K, Kodisinghe K, Sandulescu L, Wen L, Van Overbeke L, Lau L, Miele L, Parlati L, Bertot L, Buey L, Wadhawan M, Premkumar M, Niriella M, Mehrez M, Al Mandhari M, Gu M, Rodriguez-Peralvarez M, Santos M, Mendizabal M, Carbone M, Marzioni M, Teng M, Mela M, Machado M, Berenguer M, Swain M, Casado M, Afihene M, Arias-Loste M, Iavarone M, Ekstedt M, Barradas M, Brahmania M, Deutsch M, Dirchwolf M, Akarsu M, Wallace M, Okello M, Okada M, Zhang M, Danila M, Alnassar M, Said M, Babatin M, AbdAllah M, Wifi M, Mawardi M, Aljawad M, Ismail M, Ashraf M, Ashfaq M, Kamran M, Zeybel M, Chogsom M, Akyildiz M, Borubaevna M, Pessoa M, Zakaria N, Abdelkader N, Lan N, Reau N, Dinamithra N, Choudhary N, AL Masri N, Ganne N, Ramlaul N, Mustaffa N, Hernandez N, F N, Lanthier N, Gatselis N, Papadopoulos N, Abu Bakar N, Chavez-Tapia N, Oza N, Tozun N, Toktogulova N, Orasan O, Tavabie O, Parkash O, Alsiyabi O, Keskin O, Padilla P, Fytili P, Northup P, Nasr P, Carrier P, Strnad P, Amarquaye P, Ting P, Rautou P, Honkoop P, Borg P, Sripongpun P, Ranjan P, Intaraprasong P, Jalal P, Abbas Q, Wang Q, Zhu Q, Feng Q, Jacob R, Bañares R, Kumar R, Ali R, Jalilova R, Bataller R, Lui R, Andrade R, Elwakil R, Akdoğan R, Chiang R, Lin R, Gish R, D'Ambrosio R, Zapata R, Mehtani R, Ortega R, Zhu R, Mateos R, Sirli R, Perera R, Achakzai S, Joo S, Abdelhalim S, Chirapongsathorn S, Alqahtani S, Bandoh S, Maharramzade S, Petta S, Zaky S, Aryasingha S, Mahadeva S, Ali S, Yousif S, Nababan S, Fung S, Bazeed S, Alem S, Bong S, Noge S, Lau S, Strasser S, Siramolpiwat S, Chainuvati S, Tan S, Han S, Roberts S, Lin S, Senanayake S, Udumalagala S, Yapali S, Dadhich S, Kulatunga S, Singh S, Mustika S, Chen T, Karakan T, Tanwandee T, Yip T, Androutsakos T, Schiano T, Vanwolleghem T, Kesavan T, Chan T, Bruns T, Serrano T, Byambajav T, Byambadorj T, Vijitharan V, Militaru V, Fuhrmann V, Bernal V, Sevastianos V, Kweyamba V, Agyen-Frimpong V, Chen V, Rishikesavan V, Al-hamoudi W, Lai W, Deng W, Balkhed W, Kwanten W, Laleman W, Wu K, Liu X, Tao Y, Balaban Y, Gaber Y, Yeo Y, Lee Y, He Y, Pei Y, Xin Y, Wong Y, Zheng Y, Fan Y, Alkhazov Y, Martinez Y, Huang Y, AL-Naamani Z, Orujov Z, Li Z, You Z, Zulkhairi, Genden Z, Keklikkıran Ç. Delphi survey to explore core curriculum for training the next generation of hepatologists. JHEP Reports 2026, 8: 101942. PMID: 42419486, PMCID: PMC13482606, DOI: 10.1016/j.jhepr.2026.101942.
    Peer-Reviewed Original Research
  • Alcohol-associated Liver Disease in the MENA Region: A 16-Country Survey of Healthcare Provider Perspectives
    El-Kassas M, Awad A, Medhat M, Yilmaz Y, Labidi A, AlNaamani K, Sanai F, Almattooq M, Debzi N, Tumi A, Benazzouz M, Yaghi C, Elbadry M, Alsenbesy M, Waked, Elzouki A, Nour M, Alswat K, Diaz L, Arab J, Younossi Z, Adali A, Abdulsalam A, FadlElmula A, Zafar A, Alsuleimani A, Saidani K, Khathlan A, Alghamdi A, Almaghrabi M, Numan M, Baseer M, Aldosari S, Alshumrani W, Alkalbani A, Al farsi B, Kamath B, Al Shuaili H, Alqartoobi H, Abumallouh I, Hamad K, Aladawi A, AlKaabi H, Omran H, Shajee M, Bichu R, Barakat A, Obaid J, Hamid A, Badi A, Rahil A, Muneerudeen A, Mathew J, Karayem M, Abulghasm T, Anwer Z, Alzanzagi A, Almalki F, Khan M, Alhouti A, Alansari B, Tawheed A, Gamie S, Abdelmoaty A, Abudeif A, Morsy K, Arafa U, Abdelhamed W, Sherief A, Abdelhalim A, Abdelmoez A, Zaky D, Sayed E, Abdella H, Hamed O, Ahmed Y, Abdelaziz A, Ramadan A, Elsharkawy A, Helmy A, Elmakhzangy H, Amin M, Elhaddad A, Al-Darmaki A, AlDhahab H, Al Mandhari M, AlHarthy N, Alsiyabi O, Gouda A, Algeblawi A, Ebrahim A, Hashmi A, Al balushi N, Al Jabri S, AlRiyami S, Alaamer A, Garrett B, Quintana D, Kantipudi M, Qoqazeh A, Albenmousa A, Caliskan A, Bozkina A, İldan A, Özkart B, Durmazer E, Turan I, Aslan İ, Afşin S, Kamalı S, Ali A, Uysal A, Candan S, Alghanem A, Khsiba A, Baki A, Chehaider A, Ayari M, Bellakhal S, Elfert A, Esmail E, Nasef M, Shehata M, Khalaf N, Elkafoury R, Gameaa R, Sainu A, Mohamed A, Sabbek A, Hammami A, Yakut A, Varlik B, Keklikkiran C, Ardıç C, Taşçı M, Başpınar B, Tofeeq B, Dertsiz B, Kanatsız E, Adalı G, Aykut H, Tuna M, saruhan M, Çavuş B, Chayma B, Burgucu B, Eren F, Keskin M, Özel M, Koca N, Ak Ç, Keçeci M, Berhili C, Chouqi N, ouardi W, Subasi C, Demirtas C, Tazegul G, Makni C, Alromaihi D, Mohamed D, Bardakji D, Swaiss M, Bajj N, Arı D, Cankurtaran R, Polat Y, Gökçe D, Khouildi D, Boughoula K, Parampil S, Al-hashmi S, Altan E, Binnetoglu E, Hassan E, Alhawaj F, Jamal H, Refay F, Jafarov F, Gul G, Gençdal G, Akyildiz M, Bilican G, Gökcan H, Yilmaz H, Endemic H, Khalifa R, Nagdy H, Jeddi H, Eruzun H, Kurtça İ, Odah H, Alqartoobi H, Bousorra H, Husen H, Nacef I, Kurt I, Ergenç I, Mostafa I, Al Qarshoubi I, Al Noumani J, Al-Naamani Z, İlter K, Hamad K, Matar K, Al Shaer M, Al-ShaikhAli M, Abdalaziz K, Farfar K, Mandoos K, Hassan M, Fissah M, Taharboucht S, Hashem M, Hassan M, Marwa Y, Biricik M, Yalniz M, Ozercan M, Çiçek S, Yıldız M, Kaban M, Yazidi M, Abdel-Samiee M, Hassan M, Ahmed M, Mohammed M, Ismail M, Durak M, Balaban Y, Eddine N, Zayyani N, Bellil N, Abdeen N, Belkahla N, Al-Salaita N, Sağlam O, Mejri O, Osmane R, Zmerli R, Elbadawy R, Mahdy R, Al Alawi S, Garad S, Awwad S, Altowairqi S, Cesur S, Acar S, Tosun Ş, Uyar S, Galal S, rhouma S, Alhejaili T, Kaoui T, Karahan T, AlAmeel T, Elagawy W, ouardi W, Gaba W, Hussein W, Almansoury Y, Mouldi Y, Bouteraa Y, Al Balushi Y, Zakri Y, Çetinkaya Ü. Alcohol-associated Liver Disease in the MENA Region: A 16-Country Survey of Healthcare Provider Perspectives. Annals Of Hepatology 2026, 102253. PMID: 42303045, DOI: 10.1016/j.aohep.2026.102253.
    Peer-Reviewed Original Research
  • Chronic kidney disease in cirrhosis: a study of inpatients from a global perspective.
    Wong F, Adebayo D, George J, Idilman R, Hayes PC, Alvares-da-Silva MR, Torre A, Mekonnen HD, Seto WK, Sarin SK, Cao Z, Rajoriya N, Nagral A, Fisseha H, Kulkarni AV, Zhu C, Debzi N, Farias AQ, Su M, Goel A, Marciano S, Livingstone R, Dhiman RK, Gao Y, Malé-Velázquez R, Demitars CO, Bera C, Jiang YF, Velarde-Ruiz Velasco JA, Tan HK, Zhao C, Huezo MSG, Asrani SK, Wang L, Lu M, Michalczuk MT, Barutcu S, Cordova-Gallardo J, Gofton C, Gounder M, Shaw J, Albhaisi S, Zheng X, Aravinthan A, Rajaram RB, Jothimani D, Thanapirom K, Benitez C, Dincer D, Saraya A, Xu B, Lin M, Wu X, Liu C, Reddy R, Bush B, Thacker LR, Topazian M, Xie Q, Silvey S, Kamath PS, Choudhury A, Bajaj JS, CLEARED Investigators. Chronic kidney disease in cirrhosis: a study of inpatients from a global perspective. Gut 2026 PMID: 42248676, DOI: 10.1136/gutjnl-2025-336802.
    Peer-Reviewed Original Research
  • Machine Learning Models Using Hospital Admission Characteristics Do Not Optimally Predict Nosocomial Infection Development in a Global Cirrhosis Cohort.
    Silvey S, Choudhury A, Kamath P, Xie Q, Wong F, Hayes P, Seto W, Arora U, Singhal G, Jothimani D, Asrani S, Gadano A, Dincer D, Farias A, Adebayo D, Velarde-Ruiz Velasco J, Doyle A, Kulkarni A, Debzi N, Shaw J, Barutcu S, Desalgn H, Bettinger D, Regis Lah P, Duarte-Rojo A, Turan D, Wang L, Velazquez R, Zheng X, Aghayaeva S, Karasu Z, Demirtas C, Liu C, Cordova-Gallardo J, Xu B, Nagral A, Gao H, Elangovan H, Fung J, Rajorya N, Wang X, Katchmann H, Praharaj D, Mahadeva S, Jiang Y, Zheng K, Thanapirom K, Eapen C, Dhiman R, Lu M, Arrese M, Su M, Hueso S, Zhu C, Aberra H, Fisseha H, Tan H, Zhao C, Zhang N, Taneja S, Aravinthan A, Sonavane A, Saraya A, Gofton C, MacQuillan G, Pereira G, Reddy K, Sarin S, Cao Z, Topazian M, Idilman R, Torre A, George J, Alvares da Silva M, Bush B, Bajaj J. Machine Learning Models Using Hospital Admission Characteristics Do Not Optimally Predict Nosocomial Infection Development in a Global Cirrhosis Cohort. The American Journal Of Gastroenterology 2026 PMID: 42043180, DOI: 10.14309/ajg.0000000000004031.
    Peer-Reviewed Original Research

2025

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