Geoff Nunns, MD

Professional Titles

• Assistant Professor of Surgery

Publications

• Dubrovsky G, Qian J, Ceuppens S, Chopra A, Nunns GR, AlMasri S, Nassour I, Singhi A, Lee K, Zureikat A, Paniccia A. Comparative outcomes analysis of Whipple procedure in dialysis-dependent patients: A propensity-matched study using NSQIP data. Pancreatology. 2026 Mar;26(2):279-286. PubMed PMID: 41672861
• Wach MM, Bank H, Kelly K, Le T, Derby J, Nunns G, Zureikat A, Bartlett DL, Ahrendt SA, Pingpank JF, Choudry MHA, Ongchin M. ASO Visual Abstract: A Retrospective Examination of Neoadjuvant Chemotherapy for Metachronous Colorectal Peritoneal Metastases Prior to CRS/HIPEC. Ann Surg Oncol. 2026 Jul;33(7):6205-6206. PubMed PMID: 42060249
• Wach MM, Bank H, Kelly K, Le T, Derby J, Nunns G, Zureikat AH, Bartlett DL, Ahrendt SA, Pingpank JF, Choudry HA, Ongchin M. A Retrospective Examination of Neoadjuvant Chemotherapy for Metachronous Colorectal Peritoneal Metastases Prior to CRS/HIPEC. Ann Surg Oncol. 2026 Jul;33(7):6175-6184. PubMed PMID: 41945300
• Bakhtiar M, Razi S, Ahmed R, Mahnoor M, Ismail A, AlMasri S, Nunns G, Paniccia A, Ongchin MC, Zureikat A, Pingpank J, Choudry H, Saeed A. Efficacy and safety of intraperitoneal paclitaxel-based regimens in patients with gastric cancer and peritoneal metastasis: A systematic review and meta-analysis. Eur J Surg Oncol. 2026 Jan;52(1):111299. PubMed PMID: 41314091
• Chopra A, He HZ, Milosevic J, Tirukkovalur N, El Asmar R, Nassour I, Nunns G, Chen M, Chen J, Jiang S, Singhi AD, Saeed A, Zhang J, Lee K, Zureikat A, Zheng SY, Paniccia A. ASO Visual Abstract: KRAS Mutation Allele Frequency Dynamics in Plasma Extracellular Vesicles: Associations with Survival in Localized Pancreatic Adenocarcinoma. Ann Surg Oncol. 2026 Feb;33(2):1657-1658. PubMed PMID: 41385069
• Chopra A, He HZ, Milosevic J, Tirukkovalur N, Asmar RE, Nassour I, Nunns G, Chen M, Chen J, Jiang S, Singhi AD, Saeed A, Zhang J, Lee K, Zureikat A, Zheng SY, Paniccia A. KRAS Mutation Allele Frequency Dynamics in Plasma Extracellular Vesicles: Association with Survival in Localized Pancreatic Adenocarcinoma. Ann Surg Oncol. 2026 Feb;33(2):1605-1615. PubMed PMID: 41186643
• Takahashi H, Dehal A, In H, Kwon S, Eskander M, Vidri RJ, Ecker BL, Ward E, Philips P, Konstantinidis IT, Vohra N, Kaplan B, Nunns G, Davis J, Grotz TE, Williams R, Kukar M. Biomarker-Driven Management of Nonmetastatic GEJ Adenocarcinoma. Ann Surg Oncol. 2026 Aug;33(8):7343-7357. PubMed PMID: 42141340
• Das R, Kleinberger J, Sawas T, Wald AI, Bubar R, Singh H, Chennat J, Khalid A, Romutis SL, Rabinovitz M, Tavakkoli A, Fairley KJ, Boone BA, Sarkaria S, Nasr J, Thiruvengadam NR, Gabbert C, Mahmood S, Messallam AA, Gjeorgjievski M, Goldschmiedt M, Thakkar S, Tielleman T, Dugum M, Reich J, Singh S, Brand RE, McGrath K, Fasanella K, Lennon AM, Reddy R, Shrestha R, Ellis DJ, Singhi SA, Lee T, Kay PS, Lee RD, Chua TY, Nassour I, Buxbaum JL, Law JK, Bhat Y, Jamidar PA, Jonica ER, Easler JJ, Skef W, Vanderveldt HD, Dasyam AK, Geller DA, Zureikat AH, Zeh HJ, Polanco PM, Marsh JW, Hogg M, Lee KK, Pingpank JF, Choudry MHA, Humar A, Schmidt C, Mansour J, Nunns G, Ongchin M, Paniccia A, Lajara S, Monaco SE, Ohori NP, Pantanowitz L, Mitchell JM, Smith K, Shaker N, Singhi AH, Hsu D, Saeed A, Sahin IH, Zhang J, Gorantla V, Rhee J, Nikiforova MN, Kubiliun N, Slivka A, Singhi AD. DNA/RNA-Based Next-Generation Sequencing Improves the Early Diagnosis and Management of Neoplastic Bile Duct Strictures: A 6-Year, Prospective, Multi-Institutional, Real-Time Study. Gastroenterology. 2026 Aug;171(2):325-341. PubMed PMID: 41905432
• Wood-Trageser MA, Nichols CT, Hutchings DA, Bell D, Wald AI, Smith K, Hong SM, Luchini C, Brosens LAA, Verschuur AVD, Bevere M, Lawlor RT, Scarpa A, Keating S, Tucker J, O'Sullivan RJ, Liu TC, McGrath K, Fasanella K, Brand RE, Lennon AM, Das R, Singh H, Slivka A, Mahmood S, Hosmer AE, Khalid A, Romutis SL, Zureikat AH, Zeh HJ, Hogg ME, Lee KK, Paniccia A, Nunns G, Ongchin M, Park WG, Polanco PM, He J, Simeone DM, Ferrone CR, Hsu D, Zhang J, Gorantla V, Rhee J, Hruban RH, Singhi AH, Singhi SA, Wang CK, Shaker N, Bubar R, Grupillo M, Lai YT, Nikiforova MN, Heaphy CM, Waters KM, Singhi AD. Recurrent BEND2 Fusion Genes Identified by Whole Transcriptome Sequencing of Nonfunctional Pancreatic Neuroendocrine Tumors Correlate With Poor Patient Prognosis. Mod Pathol. 2025 Oct;38(10):100863. PubMed PMID: 40784487
• Hamed AB, El Asmar R, Tirukkovalur N, Tcharni A, Tatsuoka C, Jelinek M, Derby J, Dubrovsky G, Nunns G, Ongchin M, Pingpank JF, Zureikat AH, Bartlett DL, Singhi A, Choudry MH, AlMasri SS. Insight into Predictors of Cytoreduction Score Following Cytoreductive Surgery-Hyperthermic Intraperitoneal Chemotherapy for Gastric Peritoneal Carcinomatosis Improves Patient Selection and Prognostic Outcomes. Ann Surg Oncol. 2025 Jan;32(1):199-208. PubMed PMID: 39382749
• Chopra A, Ranellone N, Nunns G, Paniccia A. Robotic-assisted pancreatic enucleation: Posterior uncinate approach. Updates Surg. 2024 Dec;76(8):2969-2972. PubMed PMID: 39546251
• Wach MM, Nunns G, Hamed A, Derby J, Jelinek M, Tatsuoka C, Holtzman MP, Zureikat AH, Bartlett DL, Ahrendt SA, Pingpank JF, Choudry MHA, Ongchin M. Normal CEA Levels After Neoadjuvant Chemotherapy and Cytoreduction with Hyperthermic Intraperitoneal Chemoperfusion Predict Improved Survival from Colorectal Peritoneal Metastases. Ann Surg Oncol. 2024 Apr;31(4):2391-2400. PubMed PMID: 38270826

Practice Locations

• University of Colorado Hospital

• University of Colorado Cancer Center

Specialty Information

• Complex General Surgical Oncology, Board Certification