physician photo

Chet Hammill, MD, MCR, FACS

Associate Professor of Surgery

Medical School

MD, University of Illinois, Urbana, Illinois, 2004

Graduate School

Master of Science in Aeronautical and Astronautical Engineering, University of Illinois, Urbana, Illinois, 2002

Master of Clinical Research, Oregon Health & Sciences University, Portland, Oregon 2012

Post Doctoral Education

General Surgery Residency, University of Hawaii, Honolulu, 2004 – 2009

Fellowship in Hepatobiliary and Pancreas Surgery, Portland Providence Medical Center, Portland, Oregon, 2009 – 2011

Board Certifications

Surgery -- Certified

Clinical Interests

Diseases of the liver, pancreas, gallbladder and bile ducts; minimally invasive and robotic surgery

Patients Seen At

Center for Advanced Medicine
GI Center
4921 Parkview Place, Suite C, Floor 8
St. Louis, MO 63110
(314) 362-7147
Fax: (877) 991-8954

Siteman Cancer Center (South County)
5225 Midamerica Plaza
St. Louis, MO  63129
(314) 362-7147
Fax: (877) 991-8954

Selected Publications

PubMed Directory for Chet W. Hammill, MD

Jutric Z, Johnston WC, Hoen HM, Newell PH, Cassera MA, Hammill CW, Wolf RF, Hansen PD. Impact of lymph node status in patients with intrahepatic cholangiocarcinoma treated by major hepatectomy: a review of the National Cancer Database. HPB. 2016 Jan;18(1):79-87.

Jutric Z, Johnston WC, Grendar J, Haykin L, Mathews C, Harmon LK, Shen J, Hahn HP, Coy DL, Cassera MA, Helton WS, Rocha FG, Wolf RF, Hansen PD, Hammill CW, Alseidi AA, Newell PH. Preoperative computed tomography scan to predict pancreatic fistula after distal pancreatectomy using gland and tumor characteristics. The American Journal of Surgery. 2016 May;211(5):871-876.

Johnston C, Hoen HM, Cassera MA, Newell PH, Hammill CW, Hansen PD, Wolf RF. Total pancreatectomy for a pancreatic ductal adenocarcinoma: systematic review of the National Cancer Data Base. HPB. 2016 Jan;18(1):21-28.

Newell PH, Wu YX, Hoen H, Uppal R, Thiesing JT, Sasadeusz K, Cassera MA, Wolf RF, Hansen P, Hammill CW. Multimodal treatment of unresectable hepatocellular carcinoma to achieve complete response results in improved survival. HPB. 2015 May;17(5):454-460.

Aliabadi-Wahle S, Kelly TL, Rozenfeld Y, Carlisle JR, Naeole LK, Negreanu FA, Schuman E, Hammill CW. Treatment strategies for primary hyperparathyroidism: what is the cost? The American Surgeon. 2014 Nov;80(11):1146-1151.

Kovacsovics-Bankowski M, Chisholm L, Vercellini J, Tucker CG, Montler R, Haley D, Newell P, Ma J, Tseng P, Wolf R, Vetto JT, Hammill C, Hansen P, Weinberg AD. Detailed characterization of tumor infiltrating lymphocytes in two distinct solid malignancies show phenotypic similarities. Journal for ImmunoTherapy of Cancer. 2014;2:38.

Cho SW, Tzeng CWD, Johnston WC, Cassera MA, Newell PH, Hammill CW, Wolf RF, Aloia TA, Hansen PD. Neoadjuvant radiation therapy and its impact on complications after pancreaticoduodenectomy for pancreatic cancer: analysis of the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP). HPB. 2014 Apr;14(4):350-356.

Hammill CW, Clements LW, Stefansic JD, Wolf RF, Hansen PD. Evaluation of a minimally invasive image-guided surgery system for hepatic ablation procedures. Surgical Innovation. 2013 Nov; 21(4):419-426

Newell PH, Cottam B, Savage T, Hammill C, Wolf R, Bifulco C, Xiao HD, Crocenzi T, Hansen P, Crittenden M, Gough M. Circulating and intratumoral macrophages in patients with hepatocellular carcinoma: correlation with therapeutic approach. The American Journal of Surgery. 2013 May;205(5):534-540.

Kennedy TJ, Cassera MA, Khajnachee YS, Diwan TS, Hammill CW, Hansen PD. Laparoscopic radiofrequency ablation for the management of colorectal liver metastases: 10-year experience.  Journal of Surgical Oncology. 2013 Mar; 107(4):324-328.

Crocenzi TS, Crittenden M, Wolf R, Hammill C, Newell P, Savoy A, Somogyi L, Phillips M, Regan J, Owens M, Solhjem MC, Seung S, Kurup A, Rogosin SO, Urba WJ, Bifulco CB, Cai X, Begeac A, Gough M. An exploratory phase I trial of immunochemoradiotherapy in locally advanced borderline resectable pancreatic adenocarcinoma. Journal of Clinical Oncology. 2013 Feb;31(4).

Newell P, Savage T, Cottam B, Wolf R, Hammill C, Sasadeusz K, Thiesing T, Crittenden M, Hansen P, Gough M. Myeloid cell populations in patients with hepatocellular carcinoma: correlation with liver-directed therapy. Journal of Immunotherapy. 2012 Nov;35(9):758.

Kovacsovics-Bankowski M, Chisholm L, Vercellini J, Newell P, Ma J, Tseng P, Wolf R, Hammill C, Hansen P, Weinberg A. Immunological phenotyping of colorectal carcinoma liver metastases and primary ovarian cancer. Journal of Immunotherapy. 2012 Nov;35(9):789-790.

Cho S, Bhayani N, Newell P, Cassera M, Hammill C, Wolf R, Hansen P. Umbilical hernia repair in patients with esophageal varices or ascites: complication rates and predictors of adverse outcome. Archives of Surgery. 2012 Sep 1;147(9):864-869

Enestvedt CK, Diggs BS, Cassera MA, Hammill C, Hansen PD, Wolf R. Complications nearly double the cost of care for pancreaticoduodenectomy: A cost-center analysis. American Journal of Surgery. 2012 Sep;204(3):332-338.