Augustin R - University of Colorado Denver
Augustin R. Attwell, M.D.
601 Broadway, MC 4000
Denver, CO 80203
(303) 602-5418 (office) • (303) 602-5055 (fax) • augustin.attwell@ucdenver.edu
_____________________________________________________________________________________
Education
Medical University of South Carolina, advanced endoscopy fellowship, Charleston, SC, 2005
University of Colorado-Denver, Fellowship in Gastroenterology, Denver, CO, 2001-2004
University of Colorado-Denver, Residency in Internal Medicine, Denver, CO, 1998-2001
M.D., University of Texas Southwestern Medical School, Dallas, TX, June 1998
B.A. magna cum laude, Spanish and French, Rice University, Houston, TX, June 1994
Université de Pau, French literature and history, Pau, France, fall 1992
Additional training
Advanced training in endoscopic ultrasound, UC-Denver, 2010-2011
Evidence-based medicine workshop for GI physicians, Scottsdale, AZ, Jan 2003
Clerkship in gastroenterology and infectious disease, Hospital Regional de Cusco
Cusco, Peru, spring 2001
Neurology preceptorship, Hospital Clínico San Carlos, Madrid, Spain, spring 1998
Professional experience
Director, Therapeutic Endoscopy, Denver Health Medical Center, 2012-present
Associate professor of Medicine, UC-Denver, 2017 to present.
Staff physician and Spanish interpreter, Denver Health Medical Center, 2010-present
Staff physician, The Billings Clinic, Billings, MT, 2013-15
Staff physician, Memorial Hospital, Colorado Springs, 2013-15
Clinical Assistant professor of Medicine, Baylor College of Medicine and Weill-Cornell Medical
College, Houston, TX, 2009-2010
Staff physician, Methodist and St. Luke’s Hospitals, Houston, TX, 2008-2010
Assistant professor of Medicine, Vanderbilt University Medical School, 2005-2008
Co-director, Gastroenterology Endoscopy Lab, Vanderbilt Medical Center, 2007-2008
Teaching experience
Visiting professor and ERCP instructor, Pablo Soria Hospital Surgery residency, Jujuy, Argentina,
August 2018
Director and lecturer, medical student GI pathophysiology course, UC-Denver, 2011-present
Foundations of doctoring preceptor, 2016-present
Mentor, Colorado Health Professions development scholarship program, 2013-present
Co-director, Rocky Mountain Interventional Endoscopy Fellows course, 2012-16
Lecturer, Rocky Mountain Interventional Endoscopy Fellows course, 2010-present
Co-director and lecturer, Gastroenterology Update course, Vanderbilt Medical Center, 2006-2008
Director and lecturer, Gastroenterology physiology course, Vanderbilt Medical School, 2006-2008
Volunteer work
Biliary endoscopy training and education, Pablo Soria Hospital, Jujuy, Argentina, July 2017
General GI endoscopy, Biri District Hospital, Biri, Philippines, February 2017 and 2018
Volunteer physician, Shade Tree Clinic, Nashville, TN, 2005-2008
Certifications
American Board of Internal Medicine – Gastroenterology, January 2014
American Board of Internal Medicine - Internal Medicine, January 2013
Medical license, State of Texas, April 2008-present
Medical license, State of Colorado, March 2010-present
Medical license, State of Montana, December 2013-15
Professional societies and journal review
Fellow, American Society for Gastrointestinal Endoscopy (ASGE), 2012-present
Fellow, American Gastroenterology Association (AGA), 2017-present
Annual Scientific Program Committee, ASGE, 2013-17; Sub-chair, 2015-16; Chair 2016-17
Educational Products Committee, ASGE, 2008-11
Member, American College of Gastroenterology (ACG), 2010-present
Reviewer, Gastrointestinal Endoscopy, 2012-present
Reviewer, Digestive Diseases and Sciences, 2013-present
Reviewer, American College of Gastroenterology Case Reports Journal, 2014-present
Reviewer, World Journal of Gastroenterology, 2017-present
Honors and awards
Twinkle Award, Denver Health Medical Center, July 2017
Star Award, Denver Health Medical Center, August 2014
Peak Performance Award, Rocky Mountain Hospital Medicine, June 2012
Twinkle Award, Denver Health Medical Center, April 2012
Faculty teaching award, Division of Gastroenterology, Vanderbilt Medical Center, 2006-07
Chief of fellows, Division of Gastroenterology, UC-Denver, 2003-04
Finalist, American College of Physicians, Atypical Phenytoin Toxicity, UC-Denver, June 2000
Abstracts
Turkeltaub T, Attwell A, et al. Risk factors for recurrence of ampullary neoplasms after
endoscopic papillectomy. DDW 2019.
Wani S, Attwell A, et parison of traditional back-loaded fiducial needles with front-loaded
fiducial needles in image-guided radiation therapy (IGRT) of pancreatic adenocarcinoma: a randomized, controlled trial. DDW 2019.
Ham S. Attwell A, et al. The risk of infectious adverse events after EUS-guided fine needle
biopsy. DDW 2019.
Han S, Attwell A, et al. Baseline proton pump inhibitor use is associated with a lower risk of
bleeding after lumen-apposing metal stent placement. DDW 2019.
Fejleh P, Attwell A, et al. Occlusion of lumen-apposing metal stents used for treatment of walled
off pancreatic necrosis: results of a retrospective 2-center study. DDW 2019.
Kalra, A, Han S, Attwell A. Diagnostic performance of ERCP and liver biopsy in evaluation of
elevated liver function tests in liver transplant patients. DDW 2019.
Han S, Shah R, Attwell A, et al. Peroral pancreatoscopy with intraductal lithotripsy compared to
ERCP without pancreatoscopy in the management of pancreatic duct stones in patients with chronic pancreatitis. DDW poster 2018.
Han S, Shah R, Attwell A, et al. Comparison of adverse events of pancreatic endotherapy with and
without the use of peroral pancreatosocpy. DDW poster 2018.
Han S, Attwell A, Shah R, et al. Adverse events associated with pancreatic endotherapy. DDW
poster 2018.
Han S, Attwell A, Shah R, et al. A comparison of endoscope use and different types of altered
surgical GI anatomy in patients undergoing peroral ERCP: an assessment of techniques,
efficacy, and adverse events. DDW poster 2018.
Han S, Attwell A, Shah R, et al. Management of biliary complications following duct-to-duct and
roux-en-Y hepaticojejunostomy anastomosis in liver transplant patients. DDW poster
2018.
Mittal C, Attwell A, Shah R, et al. Diagnostic yield of micro forceps biopsies during endoscopic
ultrasound evaluation of pancreatic cystic lesions. ACG poster 2017.
Han S, Attwell A, Shah R, et al. A comprehensive evaluation of dominant biliary strictures for
malignancy in primary sclerosing cholangitis. AASLD poster 2017
Brimhall B, Attwell A, Shah R, et al. Lumen apposing metal stents compared with double pigtail
plastic stents in the management of pancreatic pseudocysts and walled-off necrosis: a 5-
year single-center study. DDW poster 2017.
Gutierrez OI, Attwell A, Khashab M, et al. An international multicenter study on digital single
operator cholangioscopy for the management of difficult bile duct stones in 271 patients.
DDW poster 2017.
Han S, Attwell A, Shah R, et al. A comprehensive evaluation of biliary strictures using ERCP-
based modalities. DDW poster 2017.
Obuch J, Attwell A, Shah R, et al. Diagnostic Yield of micro-forceps biopsies during endoscopic
ultrasound evaluation of pancreatic cystic lesions: a case series. DDW poster 2017.
Mounzer R, Brauer B, Fukami N, Attwell A, Wani S, and Shah R. Peroral video
cholangiopancreatoscopy with narrow-band imaging for the evaluation of indeterminate
pancreaticobiliary disease: a single-center U.S. experience. DDW oral presentation 2015.
Yen R, Austin G, Hosford L, Amateau S, Brauer B, Attwell A, Ahnen D, Wani S. Increased
efficiency in adenoma detection with screening and surveillance colonoscopy over the
course of a scheduled block. DDW poster 2014.
Yen R, Austin G, Hosford L, Brauer B, Amateau S, Attwell A, Menard-Katcher P, Ahnen D,
Wani S. Technical difficulty experienced by endoscopists during surveillance and
screening colonoscopy is not associated with lower adenoma detection rates.
DDW poster 2014.
Yen R, Brauer, BC, Wani, S, Amateau, SK, Attwell A, Shah, RS, Fukami N. Endoscopic
submucosal dissection (ESD) is highly effective for larger Barrett’s-associated
neoplasms: single center mid-term results. DDW poster 2014.
Camilo J, Nordstrom E, Brown NG, Yen RD, Fukami NF, Brauer BC, Wani S, Amateau SK,
Attwell AR, Shah RS. Per oral cholangioscopy with intraductal lithotripsy,
mechanical lithotripsy (ML), and large balloon papillary dilation for extraction of
complex biliary stones. DDW poster 2013.
Yen, RD, Brauer, BC, Wani, S, Amateau, SK, Attwell AR, Shah RS, Fukami N. Complete full
circumferential endoscopic submucosal dissection of Barrett’s esophagus with
intramucosal carcinoma. DDW poster 2013.
Attwell A, Shah R, Brauer B. Prototype stent design with Sof-flex® material for
pancreaticobiliary stricture endotherapy: initial experience. DDW poster 2012.
Shah RJ, Attwell A, Raijman I, Kahaleh M, Chen YK, Patel S. Pancreatoscopy with intraductal
holmium laser lithotripsy for treatment of main pancreatic duct calculi: a multi-center
U.S. experience. DDW oral presentation 2012.
Attwell A, Chen Y, Fukami N, Brauer B, Yen R, Shah R. ERCP with per oral pancreatoscopy for
calcific chronic pancreatitis using endoscope and catheter-based pancreatoscopes: a 10-
year single center experience. DDW oral presentation 2011.
Torquati A, Kernodle S, Kaiser J, Attwell A. Transoral revision of dilated gastro-jejunostomy
after gastric bypass surgery. ASBMS poster 2008.
Attwell A, Hawes R, Cotton P, Lawrence C, and Romagnuolo J. Long-term outcomes after minor
papilla sphincterotomy for pancreas divisum. DDW poster 2005.
Attwell A, Ludkowski M, Nash R, et al. TIPS and liver transplant for Budd-Chiari syndrome:
experience at one institution and a review of the literature. DDW poster 2004.
Riopelle J, Attwell A, Trotter J. Fusobacterium necrophorum presenting as acute liver failure.
ACG poster 2002.
Jakribettu V, Attwell A, Riopelle J. Endoscopic band ligation of gastric varices. ACG poster 2002.
Attwell A, McEntyre R, Antillon M, and Chen YK. EUS-guided drainage of a diverticular
abscess as an adjunct to surgical therapy. ACG poster 2003.
Manuscripts
Duloy A, Attwell A. Iatrogenic duodenal perforation treated with a fully covered metal
esophageal stent. Submitted, Gastrointest Endosc, Jan 2019.
Vachon A, Attwell A. Migrated surgical mesh masquerading as a luminal stent. Am J
Gastroenterol 2018. Am J Gastroenterol epub ahead of print 2018.
Han S, Shah R, Attwell A, et al. A Comparison of endoscopic retrograde pancreatography with
or without pancreatoscopy for removal of pancreatic duct stones. Pancreas. In press.
Brown N, Attwell A, Shah R, et al. Advanced ERCP techniques for the extraction of complex
biliary stones: a single referral center 12-year experience. Scand J Gastro 2018; 12: 1-6.
Mittal C, Attwell A, Wagh M, et al. Technical feasibility, diagnostic yield and safety of micro
forceps biopsies during endoscopic ultrasound evaluation of pancreatic cyst lesions. Gastrointest Endosc 2018; 87:1263-1269.
Brimhall B, Attwell A, Shah R, et al. Increased incidence of pseudoaneurysm bleeding with
lumen-apposing metal stents compared to double-pigtail stents in patients with pancreatic
fluid collections. Clin Gastro Hep 2018; S1542-3565 epub.
Brewer-Gutierrez O, Attwell A, Kashab M, et al. An international multicenter study on digital
single-operator cholangioscopy for the management of difficult biliary stones in 407 patients. Clin Gastro Hep 2017; S1542-3565: 3124-9.
Mounzer R, Attwell A, Wani S, et al. Interobserver agreement among cytopathologists in the
evaluation of pancreatic endoscopic ultrasound-guided fine needle aspiration cytology
specimens. Endosc Int Open. 2016; 4: E812-9.
El Haij, I, Attwell A, Brauer B, Fukami N, Shah R. Role of pancreatoscopy in the evaluation of
suspected main pancreatic duct neoplasia: a single U.S. center experience. Gastrointest
Endosc 2016: 5107: 30391-1.
Attwell A, Shah R. Response to letter. Gastrointest Endosc. 2016; 83:1301-2.
Wani S, Attwell A, Edmundowicz S, Mullady D, et al. Variation in learning curves and competence for ERCP among advanced endoscopy trainees by using cumulative sum analysis. Gastrointest Endosc 2016; 83: 711-19.Role of Peroral Pancreatoscopy in the Evaluation of Suspected Main Pancreatic Duct Neoplasia: A 13-Year U.S. Single Center ExperienceRole of Peroral Pancreatoscopy in the Evaluation of Suspected Main Pancreatic Duct Neoplasia: A 13-Year U.S. Single Center Experience Role of Peroral Pancreatoscopy in the Evaluation of Suspected Main Pancreatic Duct Neoplasia: A 13-Year U.S. Single Center Experience
Gaddam G, Attwell A, Wani S, et al. Suboptimal accuracy of carcinoembryonic antigen in
the differentiation of mucinous and non-mucinous pancreatic cysts: results from a large
multi-center cohort; Gastrointestinal Endosc 2015; 82: 1060-9.
Kriss M, Wachs M, Attwell A. An unusual cause of right upper quadrant pain in a patient with
prior liver transplantation for primary sclerosing cholangitis. Gastroenterology 2015; 150:
7-9.
Ge P, Gaddam S, Attwell A, Wani S, et al. Predictors for surgical referral in patients with pancreatic cystic lesions undergoing endoscopic ultrasound: results from a large multicenter cohort study. Pancreas 2016; 45: 51-7.
Gaddam S, Ge PS, Wani S, Attwell A, et al. Suboptimal accuracy of carcinoembryonic
antigen in differentiation of mucinous and non-mucinous pancreatic cysts: results from a
large multicenter cohort study. Gastrointest Endosc 2015; 1060-2015.
Wani S, Attwell A, Edmundowicz SA, et al. The clinical impact of immediate on-site
cytopathology evaluation during endoscopic ultrasound-guided fine needle aspiration of
pancreatic masses: a prospective multicenter randomized trial. Am J Gastroenterol 2015;
110: 1429-39.
Attwell A, Raijman I, Kahaleh M, Chen YK, Patel S, and Shah RJ. Pancreatoscopy with
intraductal laser lithotripsy for treatment of main pancreatic duct calculi: a multi-center
U.S. experience. Gastrointest Endosc 2015; 82: 15: 311-18.
Attwell A, Sams S, Fukami N. Diagnosis of ectopic pancreas by endoscopic ultrasound with fine- needle aspiration. World J Gastroenterol 2015; 21 (8): 2367-2373.
Duman J, Smith M, Attwell A. Helicobacter-pylori gastritis associated with gastric outlet and
biliary obstruction. Case Rep Clin Path 2014; 1: 96-100.
Attwell A, Sams S, Fukami N. Induction of acute ectopic pancreatitis by endoscopic
ultrasound with fine-needle aspiration. Clin Gastroenterol Hepatol 2014; 12: 1196-8.
Attwell A, Brauer B, Chen Y, Fukami N, Yen R, and Shah R. ERCP with per oral pancreatoscopy
for calcific chronic pancreatitis using endoscope and catheter-based pancreatoscopes: a
10-year single center experience. Pancreas 2014; 43; 268-74.
Attwell A, Borak G, Cotton P, Hawes R, and Romagnuolo J. Endoscopic pancreatic
sphincterotomy for pancreas divisum by using a needle-knife or standard pull-type
technique; safety and reintervention rates. Gastrointest Endosc 2006; 645: 705-11.
Attwell A and Hawes R. Surgical clip migration and choledocholithiasis: a late, abrupt
complication of laparoscopic cholecystectomy. Dig Dis Sci 2007: 52: 2254-6.
Attwell A, Dee E, Nash R, Russ P, and Shah R. Multiple myeloma involving the porta hepatis and
peritoneum causing biliary obstruction and malignant ascites. Dig Dis Sci 2005;
50:1068-71.
Attwell A and Chen Y. “Endoscopic ligation in the treatment of esophageal varices” in Wilcox
CM, Techniques in gastrointestinal endoscopy, Philadelphia: Elsevier Press, Vol 7 (1):
18-25, Jan 2005.
Attwell A, Ludkowski M, Nash R, and Kugelmas M. Treatment of Budd-Chiari syndrome in a
liver transplant unit, the role of TIPS and liver transplantation. Alim Pharm Ther 2004;
20: 867-73.
Attwell A, McEntyre R, Antillon M, and Chen YK. EUS-guided drainage of a diverticular
abscess as an adjunct to surgical therapy. Gastrointest Endosc 2003; 58: 612-6.
Attwell A and Kugelmas M. “Vascular Liver Diseases” Chapter 28, in McNally PR, GI/Liver
Secrets, 3rd Ed., Philadelphia: Elsevier Inc, 2006.
Attwell A, Laird SL, and Forman L. Combined angioplasty, TIPS and thrombolytic therapy for
Budd-Chiari Syndrome associated with portal, mesenteric, and splenic vein thrombosis.
ASGE Fellows course, Oct 2003.
Oral presentations and moderator work
Unusual complications of gallstones, Pablo Soria Hospital, Jujuy, Argentina, August 2018
Management of difficult gallstones. Pablo Soria Hospital, Jujuy, Argentina, August 2018
Difficult gallstones. Pablo Soria Hospital. Jujuy, Argentina, July 2017.
Tackling the difficult bile duct stone, Rocky Mountain Highlights in GI/Hepatology. June 2017.
Moderator, ERCP and pancreatic endoscopy: emerging therapies, Topic forum. DDW 2017.
Endoscopic ultrasound and its applications, RMIE nurses course. Feb 2017.
Moderator, “Technical advances in ERCP” and “Safety and competence in ERCP” topic fora.
DDW 2016.
Tips for cannulation and sphincterotomy technique, Rocky Mountain Interventional Endoscopy
Course. UC-Denver, 2016.
Advances in ERCP: the long and the short of it. Lecture and hands-on training in Hangzhou First
People's Hospital; Changhai Hospital of Shanghai; and General Hospital of People’s
Liberation Army of Beijing, China. November 2015.
Moderator, “Updates in ERCP” topic forum, DDW 2015.
Prevention and management of biliary complications. Rocky Mountain Interventional Endoscopy
Course. UC-Denver, 2015.
Pancreatic cyst management in 2014, Rocky Mountain Highlights in Gastroenterology,
Denver. May 2014.
Moderator, “Difficult Biliary Access” ERCP topic forum. DDW 2014.
Endoscopic ultrasound and its applications. Rocky Mountain Gastroenterology Nurses
Association. Denver, CO. April 2013.
Complications of ERCP. Rocky Mountain Interventional Endoscopy course, UC-Denver, 2013-14.
ERCP with per oral pancreatoscopy for calcific chronic pancreatitis using endoscope and
catheter-based pancreatoscopes: a 10-year single center experience. DDW 2011.
Management of neuroendocrine tumors. Rocky Mountain Gastroenterology Nurses Association,
April 2011.
Making the Cut. Rocky Mountain Interventional Endoscopy course, UC-Denver. 2011-2012.
Unexplained recurrent pancreatitis. Internal Medicine Grand Rounds, Vanderbilt Medical Center,
July 2007.
Autoimmune pancreatitis, Grand Rounds, Bedford County Medical Center, Shelbyville, TN,
Oct 2005.
Endoscopic management of biliary strictures, Gastroenterology Update Course, Vanderbilt
Medical Center, 2006 and 2008.
Endoscopic management of chronic pancreatitis, Gastroenterology Update Course, Vanderbilt
Medical Center, September 2007.
Language skills
Fluency in Spanish and French, written, conversational, and medical
Hobbies
Animal rescue, travel, golf, swimming, running, skiing, squash, fishing, crosswords
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