Gus Attwell, MD
Associate Professor, Medicine-Gastroenterology

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Medical School:
  • MD, University of Texas Southwestern Medical Center at Dallas Southwestern Medical School (1998)
Undergraduate School:
  • BA, Rice University (TX) (1994)
Internship:
  • University of Colorado (University Hospital) Program (1999)
Residency:
  • University of Colorado (University Hospital) Program, Internal Medicine (2001)
Fellowships:
  • University of Colorado (University Hospital) Program, Gastroenterology (2004)
  • Medical University of South Carolina Program, Gastroenterology - therapeutic endoscopy (2005)
Languages: English, Spanish, French
Department: Medicine-Gastroenterology

Professional Titles

  • Staff gastroenterologist
  • Associate professor of Medicine

Recognition & Awards

  • Twinkle Award, Denver Health Medical Center (2012)
  • Peak Performer Award, Rocky Mountain Hospital Medicine (2012)
  • Faculty teaching award, Vanderbilt Medical School (2008)

Research Interests

Chronic pancreatitis, gallstones

Teaching

  • Associate Professor of Medicine (2010)
    School of Medicine, Medicine
    General gastroenterology, hepatology, and pancreatic and biliary disease

Publications

  • Fatal pharyngoesophageal perforation. Gastrointest Endosc 2020; S0016-5107(20); 30048-1 .
  • Hepatocellular carcinoma presenting with obstructive jaundice and malignant hemobilia. JSM Case Reports. May 2020.
  • In Memoriam: Brian Brauer MD, FASGE. Gastrointest Endosc Jan 2020.
  • Timing of direct endoscopic necrosectomy through lumen-apposing metal stents for walled-off pancreatic necrosis impacts time to resolution. DDW 2020.
  • Iatrogenic esophageal perforation – a case series. DDW 2020.
  • Fatal endoscopic complications: trends from a retrospective analysis. DDW 2020.
  • Septic Shock after Travel to Rural Africa. Gastroenterology. 2020 Jan;158(1):56-57
  • Quach B, Han S, Attwell A. Septic shock after travel to rural Africa. Gastroenterology. 2019 Sep 24. [Epub ahead of print] PubMed PMID: 31560890
  • Vachon A, Attwell A. Migrated Surgical Mesh Masquerading as a Luminal Stent. Am J Gastroenterol. 2019 Jul;114(7):1023. PubMed PMID: 30420633
  • Han S, Shah RJ, Brauer BC, Edmundowicz SA, Hammad HT, Wagh MS, Wani S, Attwell AR. A Comparison of Endoscopic Retrograde Pancreatography With or Without Pancreatoscopy for Removal of Pancreatic Duct Stones. Pancreas. 2019 May Jun;48(5):690-697. PubMed PMID: 31091217
  • Vachon A, Attwell A. Migrated Surgical Mesh Masquerading as a Luminal Stent. Am J Gastroenterol. 2018 Nov 12. [Epub ahead of print] PubMed PMID: 30420633
  • Brimhall B, Han S, Tatman PD, Clark TJ, Wani S, Brauer B, Edmundowicz S, Wagh MS, Attwell A, Hammad H, Shah RJ. Increased Incidence of Pseudoaneurysm Bleeding With Lumen-Apposing Metal Stents Compared to Double-Pigtail Plastic Stents in Patients With Peripancreatic Fluid Collections. Clin Gastroenterol Hepatol. 2018 Sep;16(9):1521-1528. PubMed PMID: 29474970
  • Mittal C, Obuch JC, Hammad H, Edmundowicz SA, Wani S, Shah RJ, Brauer BC, Attwell AR, Kaplan JB, Wagh MS. Technical feasibility, diagnostic yield, and safety of microforceps biopsies during EUS evaluation of pancreatic cystic lesions (with video). Gastrointest Endosc. 2018 May;87(5):1263-1269. PubMed PMID: 29309781
  • Brewer Gutierrez OI, Bekkali NLH, Raijman I, Sturgess R, Sejpal DV, Aridi HD, Sherman S, Shah RJ, Kwon RS, Buxbaum JL, Zulli C, Wassef W, Adler DG, Kushnir V, Wang AY, Krishnan K, Kaul V, Tzimas D, DiMaio CJ, Ho S, Petersen B, Moon JH, Elmunzer BJ, Webster GJM, Chen YI, Dwyer LK, Inamdar S, Patrick VB, Attwell A, Hosmer A, Ko C, Maurano A, Sarkar A, Taylor LJ, Gregory MH, Strand DS, Raza A, Kothari S, Harris JP, Kumta NA, Manvar A, Topazian MD, Lee YN, Spiceland CM, Trindade AJ, Bukhari MA, Sanaei O, Ngamruengphong S, Khashab MA. Efficacy and Safety of Digital Single-Operator Cholangioscopy for Difficult Biliary Stones. Clin Gastroenterol Hepatol. 2018 Jun;16(6):918-926.e1. PubMed PMID: 29074446
  • Mittal C, Obuch JC, Hammad H, Edmundowicz SA, Wani S, Shah RJ, Brauer BC, Attwell AR, Kaplan JB, Wagh MS. Technical feasibility, diagnostic yield, and safety of microforceps biopsies during EUS evaluation of pancreatic cystic lesions (with video). Gastrointest Endosc. 2018 May;87(5):1263-1269. PubMed PMID: 29309781
  • Brimhall B, Han S, Tatman PD, Clark TJ, Wani S, Brauer B, Edmundowicz S, Wagh MS, Attwell A, Hammad H, Shah RJ. Increased Incidence of Pseudoaneurysm Bleeding With Lumen-Apposing Metal Stents Compared to Double-Pigtail Plastic Stents in Patients With Peripancreatic Fluid Collections. Clin Gastroenterol Hepatol. 2018 Sep;16(9):1521-1528. PubMed PMID: 29474970
  • Brown NG, Camilo J, Nordstrom E, Yen RD, Fukami N, Brauer BC, Wani S, Amateau SK, Attwell AR, Shah RJ. Advanced ERCP techniques for the extraction of complex biliary stones: a single referral center's 12-year experience. Scand J Gastroenterol. 2018 May;53(5):626-631. PubMed PMID: 29644909
  • Brewer Gutierrez OI, Bekkali NLH, Raijman I, Sturgess R, Sejpal DV, Aridi HD, Sherman S, Shah RJ, Kwon RS, Buxbaum JL, Zulli C, Wassef W, Adler DG, Kushnir V, Wang AY, Krishnan K, Kaul V, Tzimas D, DiMaio CJ, Ho S, Petersen B, Moon JH, Elmunzer BJ, Webster GJM, Chen YI, Dwyer LK, Inamdar S, Patrick VB, Attwell A, Hosmer A, Ko C, Maurano A, Sarkar A, Taylor LJ, Gregory MH, Strand DS, Raza A, Kothari S, Harris JP, Kumta NA, Manvar A, Topazian MD, Lee YN, Spiceland CM, Trindade AJ, Bukhari MA, Sanaei O, Ngamruengphong S, Khashab MA. Efficacy and Safety of Digital Single-Operator Cholangioscopy for Difficult Biliary Stones. Clin Gastroenterol Hepatol. 2018 Jun;16(6):918-926.e1. PubMed PMID: 29074446
  • Adverse event fatalities related to GI endoscopy. Dig Dis Sci. In press, Jan 2021.
  • ERCP and liver biopsy in the evaluation of elevated liver function tests after liver transplantation. World J Hep. In press, Dec 2020.
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Professional Memberships

  • American Society for Gastrointestinal Endoscopy, Fellow
  • American College of Gastroenterology, Member
  • American Gastroenterological Assocation, Fellow

Practice Locations

Digestive Health Center - Anschutz
1635 Aurora Ct
5th Floor
Aurora, CO 80045
720-848-2777

Denver Health
777 Bannock St
Denver, CO 80204
303-436-6000

Hospital Affiliation
  • University of Colorado Hospital
  • Denver Health Medical Center
  • Veterans Affairs Medical Center

Specialty Information

Specialties
  • Internal Medicine, Board Certification
  • Gastroenterology, Board Certification
  • EUS training, Specialized Training (2010)
  • ERCP training, Specialized Training (2005)
Conditions & Treatments
  • Digestive System - Gastroenterology (Stomach, Bowel, General GI Problems)
  • Digestive System - Therapeutic Endoscopy
  • Digestive System
Clinical Interests
My clinical interestes include pancreatic and biliary disease including gallstones, cancer, and pancreatitis; ERCP and endoscopic ultrasound

Care Philosophy
I strive to provide the best care for my patients. I believe in treating the person as a whole, taking not only disease but every aspect of a patient’s body and health, values, culture, and personality into consideration during diagnosis and treatment. I feel strongly about communicating the risks, benefits, and alternatives to treatment and having the patient be active in the discussion or decisions about his/her treatment. I believe that tests or treatment are appropriate when they make patients feel better, save or extend a life, or provide us/family with useful information. But I believe that unncessary, invasive tests or treatments that provide minimal information and do not result in improved quality of life should be avoided.

Personal Interests
Travel, running, swimming, golf, fishing, skiing, crosswords

Volunteer Activities
volunteer physician in indigent clinic/s, volunteer for animal rescue

Public Speaking
Yes
I give 3-4 oral presentations per year.

General Information

Medical Schools:
  • MD, University of Texas Southwestern Medical Center at Dallas Southwestern Medical School (1998)
Undergraduate Schools:
  • BA, Rice University (TX) (1994)
Internships:
  • University of Colorado (University Hospital) Program (1999)
Residency Programs:
  • University of Colorado (University Hospital) Program, Internal Medicine (2001)
Fellowships:
  • University of Colorado (University Hospital) Program, Gastroenterology (2004)
  • Medical University of South Carolina Program, Gastroenterology - therapeutic endoscopy (2005)
Download CV
Languages: English, Spanish, French
Department: Medicine-Gastroenterology
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