Mohamed Ali, M.D.

Mohamed R. Ali, M.D.


  • Chief, Bariatric Surgery
  • Director, Minimally Invasive Surgery
  • Professor


To see if Mohamed R. Ali is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

UC Davis Medical Center - Cypress Building

2221 Stockton Blvd., Suite E
Sacramento, CA 95817
Driving Directions

Primary Phone:
800-2-UCDAVIS (800-282-3284)

Additional Phone Numbers

Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Clinical Interests

Mohamed Ali specializes in the application of minimally invasive surgical techniques to conventional surgery, surgery of the foregut including reflux and achalasia, and laparoscopic bariatric surgery. This includes the use of advanced technology such as surgical robotics in the treatment of surgical disease. He focuses his research on studying long-term outcomes and co-morbidity reduction in bariatric surgery, applying emerging technology and robotics to laparoscopy, and investigating the genetic and hormonal bases for obesity.


Gastrointestinal Surgery

Center/Program Affiliation

Robotic Surgery Program


M.D., Medical University of South Carolina, Charleston, South Carolina, 1995

B.S., University of South Carolina, Columbia, South Carolina, 1991

Internship: Medical University of South Carolina, Charleston , South Carolina, 1995-96


Medical University of South Carolina, Charleston, South Carolina, 1996-2001


Medical College of Virginia, Richmond, Virginia, 2001-02

Board Certifications

American Board of Surgery, 2001

Professional Memberships

American College of Surgeons

American Medical Association

American Society for Metabolic and Bariatric Surgery

Society of American Gastrointestinal Endoscopic Surgeons

Select Recent Publications

Hamdallah IN, Shamseddeen HN, Getty JL, Smith W, Ali MR. Greater than expected prevalence of pseudotumor cerebri: a prospective study. Surg Obes Relat Dis. 2011 Dec 10

Krispel CM, Keltner JL, Smith W, Chu DG, Ali MR. Undiagnosed papilledema in a morbidly obese patient population: a prospective study. J Neuroophthalmol. 2011 Dec;31(4):310-5.

Rasmussen JJ, Fuller WD, Ali MR. Sleep apnea syndrome is significantly underdiagnosed in bariatric surgical patients. Surg Obes Relat Dis. 2011 Jul 24.

Shamseddeen H, Getty JZ, Hamdallah IN, Ali MR. Epidemiology and economic impact of obesity and type 2 diabetes. Surg Clin North Am. 2011 Dec;91(6):1163-72, vii. Epub 2011 Oct 2. Review.

Wu JN, Craig J, Chamie K, Asplin J, Ali MR, Low RK. Urolithiasis risk factors in the bariatric population undergoing gastric bypass surgery. Surg Obes Relat Dis. 2011 Sep 21.

Medici V, Ali MR, Seo S, Aoki CA, Rossaro L, Kim K, Fuller WD, Vidovszky TJ, Smith W, Jiang JX, Maganti K, Havel PJ, Kamboj A, Ramsamooj R, T�r�k NJ. Increased soluble leptin receptor levels in morbidly obese patients with insulin resistance and nonalcoholic fatty liver disease. Obesity (Silver Spring). 2010 Dec;18(12):2268-73. Epub 2010 May 6.

Ali MR, Tichansky DS, Kothari SN, McBride CL, Fernandez AZ Jr, Sugerman HJ, Kellum JM, Wolfe LG, DeMaria EJ. Validation that a 1-year fellowship in minimally invasive and bariatric surgery can eliminate the learning curve for laparoscopic gastric bypass. Surg Endosc. 2010 Jan;24(1):138-44. Epub 2009 Jun 11.

Asztalos BF, Swarbrick MM, Schaefer EJ, Dallal GE, Horvath KV, Ai M, Stanhope KL, Austrheim-Smith I, Wolfe BM, Ali M, Havel PJ. Effects of weight loss, induced by gastric bypass surgery, on HDL remodeling in obese women. J Lipid Res. 2010 Aug;51(8):2405-12.

Ali MR, Fuller WD, Rasmussen J. Detailed description of early response of metabolic syndrome after laparoscopic Roux-en-Y gastric bypass. Surg Obes Relat Dis. 2009 May-Jun;5(3):346-51. Epub 2008 Nov 21.

Ali MR, Rasmussen JJ, Monash JB, Fuller WD. Depression is associated with increased severity of co-morbidities in bariatric surgical candidates. Surg Obes Relat Dis. 2009 Sep-Oct;5(5):559-64. Epub 2008 Nov 21.

Swarbrick MM, Stanhope KL, Austrheim-Smith IT, Van Loan MD, Ali MR, Wolfe BM, Havel PJ. Longitudinal changes in pancreatic and adipocyte hormones following Roux-en-Y gastric bypass surgery. Diabetologia. 2008 Oct;51(10):1901-11. Epub 2008 Aug 15.