Address: 240 S. La Cienega Blvd #102 Beverly Hills CA 90211
Telephone: 855-360-9119
Email: [email protected]

Shahab Mehdizadeh, M.D. is a Beverly Hills GI doctor at La Peer Health Systems. He is board certified in gastroenterology, internal medicine and nutrition. He treats disorders of the esophagus, stomach, intestines, colon, gallbladder, liver, pancreas, and hemorrhoids and places particular emphasis on prevention of cancers of the colon and esophagus.

Dr. Mehdizadeh greatly values the importance of nutrition in the treatment and prevention of disorders. He is board certified by the American Board of Physician Nutrition Specialists. He currently serves as an attending physician for the Metabolic Support Team and is an active member of the Nutrition Advisory Support Committee at Cedars-Sinai Medical Center.

In obtaining his Bachelors and Masters degrees from the University of California Los Angeles (UCLA) with both departmental honors and UCLA college of letters and sciences honors, Dr. Mehdizadeh was also awarded the prestigious UCLA Chancellor Service award for his contributions to the University. He then attended the University of Rochester School of Medicine where he received commendations on his performance on two consecutive years. He subsequently completed his residency in internal medicine at Cedars-Sinai Medical Center where he was the recipient of the American Liver Foundation and the AASLD Resident Scholar Award. Dr. Mehdizadeh then completed three years of specialty training in gastroenterology and liver disorders at the combined UCLA/Cedars-Sinai Medical Center program.

Dr. Mehdizadeh has been involved in numerous research projects and is published in several major journals (see publications). His research focuses on new and advanced endoscopic techniques. He has received a letter of recognition from the Journal of Gastrointestinal Endoscopy for his outstanding publication. He also received the Senior Fellow Abstract Award and the Best Clinical Research Award by the American College of Gastroenterology.


  • 2003-2006 UCLA & Cedars-Sinai Medical Center Combined Programs Gastroenterology and Hepatology Fellowship
  • 2000-2003 Cedars-Sinai Medical Center Internal Medicine Residency
  • 1996-2000 University of Rochester, School of Medicine
  • 1992-1996 University of California, Los Angeles (UCLA) Departmental Scholars Program – combined degrees, 1996: M.A., Microbiology and Molecular Genetics
  • 1990-1992: B. S., Biology (summa cum laude)


  • 2008 Clinical Instructor, UCLA David Geffen School of Medicine
  • 2008 Gastroint. Endosc. letter of recognition, top 30 most highly cited article
  • 2006 American College of Gastroenterology, Senior Fellow Abstract Award
  • 2006 American College of Gastroenterology, Best Clinical Research Award
  • 2001 American Liver Foundation & AASLD Resident Scholar Travel Award
  • 1997 & 1998 Commendation on first and second year basic sciences performance
  • Summer 1998 International Medicine Fellowship—Spanish Training, Costa Rica
  • Winter 2000 International Medicine Fellowship—Clinical Neurology in Jagiellonian University, Kraków, Poland
  • 1992-1996 UCLA College of Letters & Sciences honors, Departmental Honors in biology, and the UCLA Chancellor Service Award


  • Diplomate, American Board of Gastroenterology & Hepatology
  • Diplomate, American Board of Internal Medicine
  • Diplomate, American Board of Physician Nutrition Specialists


Metabolic Support Team – Cedars-Sinai Medical Center

Team of specialized physicians involved in approving and providing TPN orders for patients in hospital and at home

Nutrition Advisory Support Committee – Cedars-Sinai Medical Center

Team of physicians and registered dietitians who oversee nutritional policy and govern the metabolic support team
American Gastroenterology Association


Mehdizadeh S, Chen GC, Barkodar L, Enayati PJ, Pirouz S, Yadegari M., Ippoliti A, Vasiliauskas EA, Lo SK, Papadakis, KA. Capsule endoscopy in patients with Crohn’s disease: diagnosic yield and safety. Gastrointestinal Endoscopy. 2010;71(1):121-7.

Mehdizadeh S, Chen G, Enayati PJ, Cheng DW, Han NJ, Shaye OA, Ippoliti A, Vasiliauskas EA, Lo SK, Papadakis KA. Diagnostic yield of capsule endoscopy in ulcerative colitis and inflammatory bowel disease of unclassified type (IBDU). Endoscopy. 2008; Jan; 40(1):30-5.

Ross A. Mehdizadeh S. Tokar J. Leighton JA. Kamal A. Chen A. Schembre D. Chen G. Binmoeller K. Kozarek R. Waxman I. Dye C. Gerson L. Harrison ME. Haluszka O. Lo S. Semrad C. Digestive Diseases & Sciences. 2008; 53(8):2140-3.

Mehdizadeh S, Han NJ, Cheng DW, Chan GC, Lo SK. Success rate of retrograde Double-balloon enteroscopy. Gastrointestinal Endoscopy, 2007; 65(4): 633-9.

Mehdizadeh S, Ross A, Gerson L, Leighton JA, Chen A, Schembre D, Chen, GC, Semrad C, Kamal A, Harrison EM, Binmoeller K, Waxman I, Kozarek R, Lo SK. What is the learning curve associated with double-balloon enteroscopy? Technical details and early experience in 6 U.S. tertiary care centers. Gastrointestinal Endoscopy, 2006; 64(5): 740-50. (Awarded GIE top thirty most highly cited article in 2007)

Cheng DW. Han NJ. Mehdizadeh S. Lo SK. Intraperitoneal bleeding after oral double-balloon enteroscopy: a case report and review of the literature. Gastrointestinal Endoscopy. 2007; 66(3):627-9.

Mehdizadeh S, Lo SK. Treatment of small-bowel diaphragm disease using double-balloon enteroscopy. Gastrointestinal Endoscopy, 2006; 64(6): 1014-7.

Chen GC, Lee-Henderson M, Mehdizadeh S, Goltzer O, Shen J, Sul J, Jutabha R. Novel external sensor array for capsule endoscopy. Endoscopy, 2006; 38(7):752-4.

Lo SK, Mehdizadeh S. Therapeutic uses of double-balloon enteroscopy. Gastrointest Endosc Clin N Am. 2006; 16(2):363-76.

Prehn JL, Mehdizadeh S, Landers CJ, Luo X, Cha SC, Wei P, Targan SR. Potential role for TL1A, the new TNF-family member and potent co-stimulator of IFN-γ, in mucosal inflammation. Clinical Immunology. 2004; 112(1):66-77.

Mehdizadeh S. Costa Rica: Spanish language training program. Journal of University of Rochester Medical Center. 1999; 10:46-48.

Allayee H, Aouizerat B, Davis R, Drake TA, Gu J, Lusis AJ, Machleder D, Mehdizadeh S, Mehrabian M, Qiao JH, Rook K, Welch C. Genetic Factors in Atherosclerosis. In: Catravas JD, Callow AD, Ryan US, eds. Vascular Endothelium: Pharmacologic and Genetic Manipulations. Plenum Publishing Co, New York; 1998. Series A: Life Sciences, Vol. 294.

Mehdizadeh S, Warden CH, Wen PZ, Xia YR, Mehrabian M, Lusis AJ. The glutathione peroxidase gene, Gpx1, maps to mouse chromosome 9. Mammalian Genome. 1996; 7(6):465-466.

Welch CL, Xia YR, Shechter I, Farese R, Mehrabian M, Mehdizadeh S, Warden CH, Lusis AJ. Genetic regulation of cholesterol homeostasis: chromosomal organization of candidate genes. Journal of Lipid Research. 1996; 37(7):1406-1421.


Modi R, Bucobo JC, Boulay BR, Jamil LH, Lo SK, Mehdizadeh S. Endoscopic Stricturoplasty (ES) is an effective treatment for hepaticojejunostomy anastomotic strictures (HAS). Gastrointestinal Endoscopy. 2010, 71(5):AB170-171.

Basseri RJ, Bucobo JC, Boulay BR, Mehdizadeh S, Jamil LH, Lo SK. Incidence and imaging characteristics of post-double balloon enteroscopy pancreatitis. Gastrointestinal Endoscopy. 2010, 71(5):AB369.

Lo, SK, Mehdizadeh S. Estimation of the depth of double balloon enteroscopy (DBE) passage in the small intestine: is it possible to simplify the process? Gastrointest Endosc. 2008, 67(5): AB263. Oral presentation DDW 2008.

Ibanez, P, Simpson P, Melmed GY, Mehdizadeh S, Sadda M, Lo SK. Capsule endoscopy (CE) re-assessment in a high volume center (HVC) identifies significant misinterpretations of the community gastroenterologists (CG) that may impact clinical care. Gastrointest Endosc. 2008, 67(5): AB91). Oral presentation DDW 2008.
Cheng D, Han NJ, Mehdizadeh S, Wolin E, Colquhoun S, Nissen N, Lo SK. What are the most useful tools to search for primary gastrointestinal neuroendocrine tumors (PGI-NET)? DDW 2007.

Mehdizadeh S, Semrad C, Gerson L, Leighton J, Chen A, Schembre D, Ross A, Cheng D, Han J, Kamal A, Harrison E, Binmoeller K, Waxman I, Kozarek R, Lo SK. Factors affecting the success rate of retrograde Double-balloon enteroscopy. ACG 2006 Oral Presentation. Senior Fellow Abstract Award.
Pasha S, Harrison ME, Lo S, Mehdizadeh S, Semrad C, Ross A, Gerson L, Kozarek R, Schembre D, Binmoeller K, Leighton J. The utility of double-balloon enteroscopy in the diagnosis of small-bowel ulcers: results from a multicenter study. ACG 2006.

Mehdizadeh S, Ross A, Leighton J, Kamal A, Chen A, Schembre D, Binmoeller K, Kozarek R, Waxman I, Gerson L, Jones B, Semrad C, Lo SK. Double-balloon enteroscopy compared to capsule endoscopy among patients with obscure gastrointestinal bleeding (OGIB): a multicenter U.S. experience. Gastrointest Endosc. 2006; 63(5): AB90. DDW 2006 Oral Presentation. Best Clinical Research Award.

Ross A, Mehdizadeh S, Tokar J, Leighton J, Kamal A, Chen A, Schembre D, Chen G, Binmoeller K, Gerson L, Kozarek R, Waxman I, Harrison E, Dye C, Haluszka O, Lo SK, Semrad C. Double-balloon enteroscopy for detection of small bowel mass lesions presenting as obscure gastrointestinal bleeding: Do we have a new gold standard? . Gastrointest Endosc. 2006; 63(5): AB159.

Mehdizadeh S, Sadda M, Lo SK. Mucosectomy-cap assisted ampullectomy (MCAA) is an effective technique in removing residual tissue after snare ampullectomy. . Gastrointest Endosc. 2006; 63(5): AB242.

Chen G, Goltzer O, Shen J, Chang C, Mehdizadeh S, Sul J, Jutabha R. A novel external lead sensor array placement approach for capsule endoscopy. . Gastrointest Endosc. 2006; 63(5): AB245.

Schluender S, Mehdizadeh S, Vasiliauskas EA, Dubinsky M, Papadakis KA, Ipoliti A, Lo S, Targan S, Fleshner P. Does preoperative wireless capsule endoscopy predict long-term outcome after ileal pouch-anal anastomosis? Gastroenterology 2006; 130(4, Suppl. 2).

Lo SK, Ross A, Leighton JA, Gerson L, Chen A, Schembre D, Mehdizadeh S, Jones BH, Semrad C, Kamal A, Binmoeller KF, Kozarek R, Waxman I, Chen GC, Tio TL. Double-balloon enteroscopy: an initial multicenter U.S. experience. Oral presentation ACG 2005. ACG best clinical research award .

Lo SK, Ross A, Leighton JA, Gerson L, Chen A, Schembre D, Mehdizadeh S, Jones BH, Semrad C, Kamal A, Binmoeller KF, Kozarek R, Waxman I, Chen GC, Tio TL. The first US multi-center study on double-balloon enteroscopy. Oral presentation UEGW 2005.

Mehdizadeh S, Chen GC, Enayati PJ, Shaye O, De Leon V, Ippoliti A, Lo SK, Papadakis KA. The Diagnostic yield of wireless capsule enteroscopy (WCE) in patients with ulcerative colitis (UC). Gastrointes Endosc. 2005; 61(5):AB175.

Mehdizadeh S, Chen GC, Enayati P, Shaye O, Lo SK, Papadakis KA. Utility of wireless capsule enteroscopy in evaluating Crohn’s disease patients with abdominal symptoms. Gastrointest Endosc. 2005; 61(5):AB175.

Lo SK, Mehdizadeh S, Chen GC. Endoscopic stricturoplasty (ES) of hepaticojejunostomy anastomotic strictures (HAS): A novel and effective ERCP Technique. Gastrointest Endosc. 2005; 61(5):AB212.

Lo SK, Leighton JA, Ross A, Gerson L, Chen A, Schembre D, Mehdizadeh S, Jones BH, Semrad C, Kamal A, Binmoeller KF, Kozarek R, Waxman I, Chen GC, Tio TL. Double-balloon push enteroscopy: Technical details and early experience in 6 U.S. tertiary care centers. Gastrointest Endosc. 2005; 61(5):AB174.

Shaye O, Yang J, Mehdizadeh S, Ognibene S, Fleshner P, Vasiliauskas E, Papadakis KA, Targan S, Ippoliti A. Efficacy of cyclosporine A in severe ulcerative colitis – a 9-year experience. Gastroenterology. 2005; 128(4, Suppl 2):A-441.

Ognibene SJ, Vasiliauskas E, Dubinsky M, Ippoliti A, Papadakis KA, Shaye O, Mehdizadeh S, Targan S, Fleshner P. Long term morbidity of cyclosporine A treated patients with ulcerative colitis: a word of caution. Gastroenterology. 2005; 128(4, Suppl 2):A-584.

Ognibene SJ, Mehdizadeh S, Shaye O, Fleshner PR. Long-term effects of cyclosporine A on morbidity after colectomy for ulcerative colitis: A word of caution. Diseases of Colon and Rectum. 2005; 48 (3): 671-672.

Prehn J, Mehdizadeh S, Wei P, Targan SR. Novel mechanism of Th1 generation: TNF superfamily molecule, TL1A, markedly amplifies IFNγ production by resting lymphocytes cultured with Il-12 and Il-18 independent of TCR stimulation. Gastroenterology. 2003; 124 (4, Suppl 1): A333.

Mehdizadeh S, Prehn J, Landers C, Wei P, Targan SR. TLx, a novel TNF-like cytokine, augments IFNγ production from stimulated T cells independently of, but in synergy with, Il12 and Il-18. Gastroenterology. 2002; 122 (4, Suppl): A-147.

Prehn J, Mehdizadeh S, Lander C, Wei P, Targan SR. Potent augmentation of TH1-IFNγ production by TLx, a novel TNF homologue: Potential role in Crohn’s disease pathogenesis. Gastroenterology. 2002; 122 (4, Suppl): A-35.

Mehdizadeh S, Stoutenberg A, Ryan C, Shaw-Stiffel T. Racial differences in chronic hepatitis C viral infection in Rochester, NY: liver biopsy correlation with viral load, genotype, and demographics. Hepatology. 2000; Suppl. 626A.



Address: 240 S. La Cienega Blvd #102 Beverly Hills, CA, 90211
Office#: 855-360-9119
Email: [email protected]



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