Dr Christopher Hamerski

Dr. Christopher M. Hamerski, M.D., is a gastroenterologist practicing in San Francisco, California.

He has over 15 years of diverse medical experience and is affiliated with multiple medical facilities in the area. These include the California Pacific Medical Center — Van Ness Campus, and the California Pacific Medical Center — Mission Bernal.


  1. Effectiveness of combination endoscopic therapy for colonic anastomotic leaks. Endoscopy. 2020 Jun 10. Thiruvengadam NR, Hamerski C, Nett A, Bhat Y, Shah J, Bernabe J, Kane S, Binmoeller K, Watson RR. PMID: 32521549.

  2. EUS-Guided Choledochoduodenostomy for Distal Malignant Biliary Obstruction Using Electrocautery-Enhanced Lumen-Apposing Metal Stents: First US, Multicenter Experience. Dig Dis Sci. 2019 11; 64(11):3321-3327. El Chafic AH, Shah JN, Hamerski C, Binmoeller KF, Irani S, James TW, Baron TH, Nieto J, Romero RV, Evans JA, Kahaleh M. PMID: 31175495.

  3. Endoscopic ultrasound-guided biliary access versus precut papillotomy in patients with failed biliary cannulation: a retrospective study. Endoscopy. 2017 Feb; 49(2):146-153. Lee A, Aditi A, Bhat YM, Binmoeller KF, Hamerski C, Sendino O, Kane S, Cello JP, Day LW, Mohamadnejad M, Muthusamy VR, Watson R, Klapman JB, Komanduri S, Wani S, Shah JN. PMID: 28107764.

  4. The Clinical Utility of Evaluating the Luminal Upper Gastrointestinal Tract During Linear Endoscopic Ultrasonography. J Clin Gastroenterol. 2016 08; 50(7):538-44. Kim S, Hamerski C, Ghassemi K, Shah J, Bhat Y, Klapman J, Komanduri S, Keswani RN, Bidari K, Wani S, Watson RR, Muthusamy VR. PMID: 26501879.

  5. A randomized controlled cross-over trial and cost analysis comparing endoscopic ultrasound fine-needle aspiration and fine needle biopsy. Endosc Int Open. 2016 May; 4(5):E497-505. Aadam AA, Wani S, Amick A, Shah JN, Bhat YM, Hamerski CM, Klapman JB, Muthusamy VR, Watson RR, Rademaker AW, Keswani RN, Keefer L, Das A, Komanduri S. PMID: 27227104.

  6. Feasibility of non-radiation EUS-based ERCP in patients with uncomplicated choledocholithiasis (with video). Gastrointest Endosc. 2016 Nov; 84(5):764-769. Shah JN, Bhat YM, Hamerski CM, Kane SD, Binmoeller KF. PMID: 27040099.

  7. EUS-guided treatment of gastric fundal varices with combined injection of coils and cyanoacrylate glue: a large U.S. experience over 6 years (with video). Gastrointest Endosc. 2016 Jun; 83(6):1164-72. Bhat YM, Weilert F, Fredrick RT, Kane SD, Shah JN, Hamerski CM, Binmoeller KF. PMID: 26452992.

  8. Underwater EMR of adenomas of the appendiceal orifice (with video). Gastrointest Endosc. 2016 Mar; 83(3):638-42. Binmoeller KF, Hamerski CM, Shah JN, Bhat YM, Kane SD. PMID: 26375437.

  9. Attempted underwater en bloc resection for large (2-4 cm) colorectal laterally spreading tumors (with video). Gastrointest Endosc. 2015 Mar; 81(3):713-8. Binmoeller KF, Hamerski CM, Shah JN, Bhat YM, Kane SD, Garcia-Kennedy R. PMID: 25708759.

  10. Plastic biliary stent patency in patients with locally advanced pancreatic adenocarcinoma receiving downstaging chemotherapy. Gastrointest Endosc. 2015 Feb; 81(2):360-6. Ge PS, Hamerski CM, Watson RR, Komanduri S, Cinnor BB, Bidari K, Klapman JB, Lin CL, Shah JN, Wani S, Donahue TR, Muthusamy VR. PMID: 25442083.

  11. Single-session circumferential EMR and metal stent placement for the treatment of long-segment Barrett’s esophagus with high-grade intraepithelial neoplasia. Gastrointest Endosc. 2014 Aug; 80(2):331. Bhat YM, Kane SD, Shah JN, Hamerski CM, Binmoeller KF. PMID: 25034839.

  12. Piercing of the ampulla via the stent-in-stent biliary metal stent technique. Gastrointest Endosc. 2015 Feb; 81(2):460-1. Watson RR, Hamerski CM, Muthusamy V. PMID: 24981804.

  13. Indolent primary aortoduodenal fistula presenting as iron deficiency anemia. Clin Gastroenterol Hepatol. 2011 Dec; 9(12):A26. Hamerski CM, Lane JS, Muthusamy VR. PMID: 21723227.

  14. Yield and performance characteristics of endoscopic ultrasound-guided fine-needle aspiration for diagnosing upper GI tract stromal tumors. Dig Dis Sci. 2011 Jun; 56(6):1757-62. Watson RR, Binmoeller KF, Hamerski CM, Shergill AK, Shaw RE, Jaffee IM, Stewart L, Shah JN. PMID: 21360279.

  15. Management of hepatitis C-infected liver transplant recipients at large North American centers: changes in recent years. Clin Transplant. 2006 Jan-Feb; 20(1):1-9. Khalili M, Vardanian AJ, Hamerski CM, Wang R, Bacchetti P, Roberts JP, Terrault NA. PMID: 16556146.

  16. Applied horizontal force increases impact loading in reduced-gravity running. J Biomech. 2001 May; 34(5):679-85. Chang YH, Hamerski CM, Kram R. PMID: 11311709.

  17. The independent effects of gravity and inertia on running mechanics. J Exp Biol. 2000 Jan; 203(Pt 2):229-38. Chang YH, Huang HW, Hamerski CM, Kram R. PMID: 10607533.


Medical School

Dr. Christopher M. Hamerski graduated with honors from the University Of California, San Francisco School Of Medicine in 2005. 

Residency: Gastroenterologist San Francisco

University of California, San Francisco


University of California, San Francisco


University of California, Irvine

University of California, Los Angeles