Shaun C. Daly, MD, FACS, FAFS
Biography
SDr. Shaun Daly is a board-certified general surgeon specializing in advanced minimally invasive surgery with expertise in diseases of the upper gastrointestinal tract. His clinical focus includes gastroesophageal reflux disease, hiatal hernia repair, achalasia, and complex revisional foregut surgery. Additionally, Dr. Shaun Daly specializes in the surgical management for weight loss and foregut oncology. He is fellowship-trained in minimally invasive bariatric and gastrointestinal surgery and is an active member of the American Society for Metabolic and Bariatric Surgeons, American Foregut Society, American Medical Association, American College of Surgeons, and the Society of American Gastrointestinal and Endoscopic Surgeons.
Surgical Expertise
Dr. Daly offers comprehensive minimally invasive treatment options for all foregut diseases, weight loss procedures, esophageal and gastric cancer operations after being mentored under pioneers in minimally invasive and thoracoscopic esophagectomy. He holds specialized certifications in advanced anti-reflux procedures, including magnetic sphincter augmentation (LINX) and Transoral Incisionless Fundoplication (TIF). His practice also includes the surgical management of gallbladder disease, small bowel pathology, appendiceal disease, and the full spectrum of abdominal wall hernias, ranging from minimally invasive repair to open reconstruction and component separation techniques. He is proficient in robotic surgery using the da Vinci Surgical System.
Education and Training
Dr. Daly earned his medical degree from Rush University Medical School in Chicago. He completed his general surgery residency at Rush University Medical Center and John H. Stroger, Jr. Hospital of Cook County. During residency, he also completed two years of translational bench research focused on the identification and clinical application of serum biomarkers in lung cancer. He later completed a fellowship in Advanced Minimally Invasive Bariatric and Gastrointestinal Surgery at the University of California, Irvine Medical Center.
Academic and Leadership Roles
Dr. Daly serves as an Associate Professor in the Division of Bariatric and Gastrointestinal Surgery. He has authored 41 peer-reviewed manuscripts, contributed book chapters, and delivered numerous presentations at national surgical meetings. Several of his operative videos have been featured at national conferences, reflecting the complexity of the patients and procedures in his practice. He also serves on multiple national surgical committees, including committees developing standards and guidelines for the management of complex gastroesophageal and metabolic diseases. He serves as chair for the clinical practice committee of the American Foregut Society. In addition to his clinical and academic roles, Dr. Daly serves as Medical Director for Clinical Documentation Integrity and supports patient progression, thru leadership roles as the Medical Officer of the Day. He maintains academic appointments within the University of California system, with a particular interest in patient quality measures.
Return to topEducation
- Bachelor in Biology, Benedictine University, 2003
- M.D., Rush University Medical School, 2008
Distinctions
- Fellow, American College of Surgeons (FACS), 2020-present
- Fellow, American Foregut Society, 2026-present
Areas of Expertise
- Minimally Invasive Surgery
- Bariatric Surgical Techniques
- Hiatal Hernia Repair
- Gastroesophageal Reflux Management
- Serum Biomarkers in Oncology
- Esophageal Cancer Treatment
- Gastroparesis in Obesity
Recent Publications
- Nguyen N.T., Daly S., Smith B.R., “Invited Commentary” (opens in new tab), Journal of the American College of Surgeons, vol. 241, pp. 65-66, 2025.
- Irfan A., Purdy A.C., Daly S., “Gastroesophageal Reflux Disease” (opens in new tab), Sages Manual of Surgical Referral for Primary and Emergency Care, pp. 47-63, 2025.
- Hanna NM, Kumar SS, Daly SC, “Management of Symptomatic, Asymptomatic, and Recurrent Hiatal Hernia: A Systemic Review and Meta-Analysis” (opens in new tab), Surgical Endoscopy, vol. 38, no. 6, pp. 2917-2938, 2024.
- Bardaro SJ, Daly SC, Sudan R, “Gastroparesis: An Evidence-Based Review for the Bariatric and Foregut Surgeon” (opens in new tab), Surgery for Obesity and Related Diseases, vol. 19, no. 5, pp. 403-420, 2023.
- Galvin K.M., Daly S., Hinojosa M., “Laparoscopic resection of gastric and esophageal submucosal tumors” (opens in new tab), AFS Textbook of Foregut Disease, pp. 485-493, 2023.
- Dayyani F, Daly SC, Maheswari S, “A Phase Ib Feasibility Trial of Response Adapted Neoadjuvant Therapy in Gastric Cancer (RANT-GC)” (opens in new tab), Future Oncology, vol. 18, no. 21, pp. 2615-2622, 2022.
- Gambhir S, Daly SC, Nguyen, “The Effect of Transparency on the Gender-based Compensation Gap in Surgical Disciplines Within a Large Academic Healthcare System” (opens in new tab), Surgical Endoscopy, vol. 35, no. 6, pp. 2607-2612, 2021.
- Tay E, Daly SC, Nguyen, “Outcomes of Complex Gastrointestinal Cancer Resection at US News and World Report Top-Ranked vs. Non-Ranked Hospitals” (opens in new tab), Journal of the American College of Surgeons, vol. 233, pp. 21-27.e1, 2021.
- Krasnoff CC, Daly SC, Nguyen NT, “Predictors of Anastomotic Leak After Esophagectomy for Cancer: Not All Leaks Increase Mortality” (opens in new tab), The American Surgeon, vol. 87, no. 6, pp. 864-871, 2021.
Most Cited Publications
- Slater B, Daly SC, Stefanidis D, “SAGES Guidelines for the Surgical Treatment of Gastroesophageal Reflux Disease (GERD)” (opens in new tab), Surgical Endoscopy, vol. 35, no. 9, pp. 4903-4917, 2021.
- Slater B, Daly SC, Marks JM, “Multi-Society Consensus Conference and Guideline on the Treatment of Gastroesophageal Reflux Disease” (opens in new tab), Surgical Endoscopy, vol. 37, pp. 781-806, 2022.
- Daly S., Kumar S.S., Collings A.T., Hanna N.M., Pandya Y.K., Kurtz J., Kooragayala K., Barber M.W., Paranyak M., Kurian M., Chiu J., Ansari M.T., Slater B.J., Kohn G.P., “SAGES guidelines for the surgical treatment of hiatal hernias” (opens in new tab), Surgical Endoscopy, vol. 38, pp. 4765-4775, 2024.
- Gambhir S, Inaba CS, Daly S, “Venous Thromboembolism Risk for the Contemporary Bariatric Surgeon” (opens in new tab), Surgical Endoscopy, vol. 34, no. 8, pp. 3521-3526, 2020.
- King K, Daly SC, El Chaar M, “Assessment and Management of Gastroesophageal Reflux Disease Following Bariatric Surgery” (opens in new tab), Surgery for Obesity and Related Diseases, vol. 17, no. 11, pp. 1919-1925, 2021.
- Gambhir S, Daly S, Nguyen NT, “Association of US News and World Report Top Ranking for Gastroenterology and Gastrointestinal Operation with Patient Outcomes in Abdominal Procedures” (opens in new tab), JAMA Surgery, vol. 154, no. 9, pp. 861-866, 2019.
- Gambhir S, Daly S, Nahmias J, “Esophageal Trauma: Analysis of Incidence, Morbidity, and Mortality”, American Surgeon, vol. 85, no. 10, pp. 1134-1138, 2019.
Contact Information
Email: shaund@uci.edu
Phone: (714) 456-8160
Address: Chapman Pavilion , Ste 6200
Return to topThis profile was created with the help of AI.
Last updated on 10/26/2026.