UC Davis Medical Center - Cypress Building
2221 Stockton Blvd., Suite E
Sacramento, CA 95817
UC Davis Medical Group - Rocklin
550 West Ranch View Dr., Suite 2005
Rocklin, CA 95765
Additional Phone Numbers
Philosophy of Care
My educational background is diverse. I graduated from the American University of Beirut medical school in Beirut Lebanon. I completed my general surgery training at the University of Texas Medical Branch in Galveston-Texas where I was involved in various aspects of medical students’ education as well as a member of the education sub-committee in GME.
I also possess a strong research background as I spent 2 years in clinical outcomes and database research in colon and rectal surgery at the University of California-Irvine. I did a colon and rectal surgery fellowship at Baylor in Dallas where I gained extensive experience in different aspects of surgical approaches from open to laparoscopic and robotic as well as managing complex colon and rectal patients.
Colon and Rectal Surgery
M.D., American University of Beirut - School of Medicine, Beirut, Lebanon 2005
B.S., Biology, American University of Beirut, Beirut, Lebanon 2001
M.D. General Surgery, American University of Beirut, Beirut, Lebanon 2005-2007
General Surgery, The Mayo Clinic, Phoenix AZ 2009-2011
Surgery - General, University of Texas Medical Branch, Galveston TX 2016
Colon and Rectal Surgery, Baylor University Medical Center, Dallas TX 2016-2017
Surgery, UC Irvine, Irvine CA 2011-2013
American Board of Surgery - General Surgery, 2017
CA Medical Board, License, 2008
American College of Surgeons
American Society of Colon and Rectal Surgeons
Clinical Robotic Surgery Association
Society of Surgical Oncology
Honors and Awards
Best Research Award- Baylor Health Care System Research Week, 2017
Best Research Paper- Texas Society of Colon and Rectal Surgeons, 2017
Poster of Distinction- American Society of Colon and Rectal Surgeons, 2017
Third Place for best research paper at the Southern California Chapter of the American College, 2013
Select Recent Publications
Gahagan JV, Halabi WJ, Nguyen VQ, Carmichael JC, Pigazzi A, Stamos MJ, Mills SD. Colorectal Surgery in Patients with HIV and AIDS: Trends and Outcomes over a 10-Year Period in the USA. J Gastrointest Surg. 2016 Jun;20(6):1239-46.
Halabi WJ, Jafari MD, Nguyen VQ, Carmichael JC, Mills S, Pigazzi A, Stamos MJ. Ureteral injuries in colorectal surgery: an analysis of trends, outcomes, and risk factors over a 10-year period in the United States. Dis Colon Rectum. 2014 Feb;57(2):179-86.
Jafari MD, Halabi WJ, Stamos MJ, Nguyen VQ, Carmichael JC, Mills SD, Pigazzi A. Surgical outcomes of hyperthermic intraperitoneal chemotherapy: analysis of the american college of surgeons national surgical quality improvement program. JAMA Surg. 2014 Feb;149(2):170-5.
Jafari MD, Jafari F, Halabi WJ, Nguyen VQ, Pigazzi A, Carmichael JC, Mills SD, Stamos MJ. Colorectal Cancer Resections in the Aging US Population: A Trend Toward Decreasing Rates and Improved Outcomes. JAMA Surg. 2014 Jun;149(6):557-64.
Halabi WJ, Kang CY, Nguyen VQ, Carmichael JC, Mills S, Stamos MJ, Pigazzi A. Epidural analgesia in laparoscopic colorectal surgery: a nationwide analysis of use and outcomes. JAMA Surg. 2014 Feb;149(2):130-6.
Halabi WJ, Kang CY, Ketana N, Lafaro KJ, Nguyen VQ, Stamos MJ, Imagawa DK, Demirjian AN. Surgery for gallstone ileus: a nationwide comparison of trends and outcomes. Ann Surg. 2014 Feb;259(2):329-35.
Halabi WJ, Jafari MD, Kang CY, Nguyen VQ, Carmichael JC, Mills S, Pigazzi A, Stamos MJ. Colonic volvulus in the United States: trends, outcomes, and predictors of mortality. Ann Surg. 2014 Feb;259(2):293-301.
Halabi WJ, Kang CY, Jafari MD, Nguyen VQ, Carmichael JC, Mills S, Stamos MJ, Pigazzi A. Robotic-assisted colorectal surgery in the United States: a nationwide analysis of trends and outcomes. World J Surg. 2013 Dec;37(12):2782-90.
Halabi WJ, Jafari MD, Nguyen VQ, Carmichael JC, Mills S, Pigazzi A, Stamos MJ. Blood transfusions in colorectal cancer surgery: incidence, outcomes, and predictive factors: an American College of Surgeons National Surgical Quality Improvement Program analysis. Am J Surg. 2013 Dec;206(6):1024-32; discussion 1032-3.
Halabi WJ, Jafari MD, Carmichael JC, Nguyen VQ, Mills S, Phelan M, Stamos MJ, Pigazzi A. Laparoscopic versus open repair of parastomal hernias: an ACS-NSQIP analysis of short-term outcomes. Surg Endosc. 2013 Nov;27(11):4067-72.