A photo of Gregory Tiao.

Greg M. Tiao, MD

  • Director, Division of General and Thoracic Surgery
  • Frederick C. Ryckman Chair in Pediatric Surgery
  • Surgical Director, Liver Transplantation
  • Program Director, Pediatric Surgery Fellowship
  • Professor, UC Department of Surgery
  • UC Department of Pediatrics
While working with patients has been a major focus, I also have established and contributed to bench and clinical research programs developing new treatment strategies to improve outcomes in the care of children afflicted with chronic liver disease and liver tumors.
Greg M. Tiao, MD



During my training, I cared for several infants with biliary atresia — one of them requiring a liver transplantation to survive. The infants and their families had to go through so much with very little understanding of why the disease occurred. I decided to focus on this disease process, pursuing both pediatric surgery and transplant training so I could care for a child with biliary atresia from diagnosis through liver transplantation, when necessary.

As a pediatric and pediatric abdominal transplant surgeon, my focus is on hepatobiliary (liver and biliary system) disease, pediatric surgical oncology (especially liver tumors) and solid organ transplantation. While working with patients has been a major focus, I also have established and contributed to bench and clinical research programs developing new treatment strategies to improve outcomes in the care of children afflicted with chronic liver disease and liver tumors. Because of these programs, we use the most cutting-edge approaches in the treatment algorithms of patients.

In my bench research program, we are seeking to understand the pathogenic basis of biliary atresia. From a clinical research standpoint, I developed and lead an international clinical research trial focused on the liver tumors hepatoblastoma and hepatocellular carcinoma. With this information, we hope to develop new treatment strategies to alter the disease course and reduce the need for liver transplantation.

I hold the honorary chair named after the founder of the liver transplantation program at Cincinnati Children's, Dr. Frederick C. Ryckman. I speak Mandarin and my last name in Chinese is derived from the character used to describe a knife, which is quite appropriate!

BS: Northwestern University, Evanston, IL, 1986.

MD: University of Illinois, Chicago, IL, 1990.

Residency: Loyola University, Maywood, IL, 1991-1992; Senior Resident, Department of Surgery, University of Cincinnati, Cincinnati, OH, 1995-1997; Chief Resident, Department of Surgery, University of Cincinnati, Cincinnati, OH, 1997-1998.

Fellowships: Research Fellow, University of Cincinnati, Cincinnati, OH, 1992-1995; Transplant Surgery Fellow, University of Cincinnati, Cincinnati, OH, 2000-2002; Pediatric Surgery Fellow, Los Angeles Children's Hospital, Los Angeles, CA, 1998-2000.

Certification: Pediatric Surgeon, 2000; Transplant Surgeon, 2002.


Biliary atresia; liver tumors and transplantation

Services and Specialties

Colorectal Disorders, Liver Care, Kidney Transplant, End-Stage Renal Disease, Liver Tumor, Intestinal Disorders, Surgery - General and Thoracic, Pancreas Care, Liver Transplant, Fontan Management, Kidney Tumor Clinic

Research Areas

General and Thoracic Surgery

Additional Languages


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Management of undifferentiated embryonal sarcoma of the liver: A Pediatric Surgical Oncology Research Collaborative study. Kastenberg, ZJ; Short, SS; Riehle, KJ; Utria, A; Lautz, TB; Ott, KC; Murphy, AJ; Mansfield, S; Lal, DR; Hallis, B; Meyers, RL; Tiao, G; Dasgupta, R; Baertschiger, R. Pediatric Blood and Cancer. 2024; 71:e30975.

Children's Oncology Group's 2023 blueprint for research: Surgery. Gow, KW; Lautz, TB; Malek, MM; Cost, NG; Newman, EA; Dasgupta, R; Christison-Lagay, ER; Tiao, GM; Davidoff, AM. Pediatric Blood and Cancer. 2024; 71:e30766.

EZH2 is a key component of hepatoblastoma tumor cell growth. Glaser, K; Schepers, EJ; Zwolshen, HM; Lake, CM; Timchenko, NA; Karns, RA; Cairo, S; Geller, JI; Tiao, GM; Bondoc, AJ. Pediatric Blood and Cancer. 2024; 71:e30774.

Cellular origin and molecular mechanisms of lung metastases in patients with aggressive hepatoblastoma. Gulati, R; Lutz, M; Hanlon, M; Cast, A; Karns, R; Geller, J; Bondoc, A; Tiao, G; Timchenko, L; Timchenko, NA. Hepatology Communications. 2024; 8:e0369.

Intrahepatic Cholangiolitis in Cystic Fibrosis (ICCF): An Under-Appreciated Cause of Persistent Cholestasis in Infancy. Bernieh, A; Bove, K; Garcia, V; Tiao, G; Lazar, L; Sathe, M; Sanchez, J; Gonzalez, R; Gonzalez-Gomez, I. Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society. 2024; 27:13-22.

Critical elements of pediatric liver cancer surgery. Kastenberg, ZJ; Baertschiger, RM; Cuenca, AG; Galvan, NT N; Lemoine, CP; Roach, JP; Walther, AE; Dunn, SP; Goss, JA; Healey, PJ; Weldon, CB; Bondoc, AJ; Riehle, KJ; Vasudevan, SA. Seminars in Pediatric Surgery. 2023; 32:151340.

Deletion of Interferon Lambda Receptor Elucidates Susceptibility to the Murine Model of Biliary Atresia. Hartman, SJ; Weiss, MA; Temple, HM; Donnelly, B; Pasula, R; Poling, HM; McNeal, M; Mohanty, SK; Tiao, GM. Journal of Interferon and Cytokine Research. 2023; 43:427-434.

Children's Oncology Group's 2023 blueprint for research: Liver tumors. O'Neill, AF; Meyers, RL; Katzenstein, HM; Geller, JI; Tiao, GM; López-Terrada, D; Malogolowkin, M. Pediatric Blood and Cancer. 2023; 70 Suppl 6:e30576.

Retreatment with Cisplatin May Provide a Survival Advantage for Children with Relapsed/Refractory Hepatoblastoma: An Institutional Experience. Somers, KM; Tabbouche, RB; Bondoc, A; Towbin, AJ; Ranganathan, S; Tiao, G; Geller, JI. Cancers. 2023; 15:3921.

Customized Postoperative Therapy Improves Bile Drainage in Biliary Atresia: A Single Center Preliminary Report. Pandurangi, S; Kim, S; Asai, A; Bondoc, A; Balistreri, W; Campbell, K; Miethke, A; Peters, A; Rogers, M; Taylor, A; Mullapudi, B; Sheridan, R; Tiao, G; Bezerra, JA. Journal of Pediatric Surgery. 2023; 58:1483-1488.

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