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Dan German Blazer III

Professor of Surgery
Surgical Oncology
Box 3247 Med Ctr, Durham, NC 27710
485 Seeley G.Mudd Bldg., Searle Center, Durham, NC 27710

Current Duke Appointments & Affiliations


Professor of Surgery · 2023 - Present Surgical Oncology, Surgery
Interim Chief of Surgical Oncology · 2025 - Present Surgical Oncology, Surgery
Vice Chair of Faculty Affairs in the Department of Surgery · 2026 - Present Surgery, Clinical Science Departments
Member of the Duke Cancer Institute · 2008 - Present Duke Cancer Institute, Institutes and Centers

Recent News Items


Published May 17, 2016
Going to church could help you live longer, study says
Published April 15, 2015
Your brain's aging and a new report urges ways to stay sharp
Published June 17, 2013
Duke doctor duo share same name, ethics

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Recent Scholarly Works


The effect of delays in cancer surgery due to the COVID-19 pandemic on cancer resectability and postoperative mortality in different tumor entities

Journal article Discover Oncology · December 1, 2026 Background: During the COVID-19 pandemic, prioritization of COVID-19 patients led to delays in oncological surgery, potentially impacting patient outcomes. This analysis examines the effects of surgical delays in various tumor entities on resectability and ... Full text Cite

Phase 1 trial of pre-operative image guided intensity modulated photon radiotherapy with simultaneously integrated boost to the high-risk margin for patients with retroperitoneal sarcoma.

Journal article Radiother Oncol · August 2026 This phase 1 trial using intensity modulated photon pre-operative radiotherapy for patients with retroperitoneal sarcoma demonstrated that the dose can be safely escalated to 63.0 Gy to a select tumor volume deemed at high risk for positive margins. Thus, ... Full text Link to item Cite

Consensus Guideline for the Management of Malignant Gastrointestinal Obstruction in Patients with Peritoneal Surface Malignancies.

Journal article Ann Surg Oncol · June 2026 BACKGROUND: Malignant gastrointestinal obstruction (MGIO), a frequent complication of peritoneal surface malignancies (PSM), often portends a poor prognosis. The lack of high-quality evidence on optimal management strategies necessitated a national consens ... Full text Link to item Cite
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Recent Grants


Clinical Trials Umbrella - Scanned Beam

Clinical TrialPrincipal Investigator · Awarded by Massachusetts General Hospital · 2019 - 2025

A Phase I Trial of Talimogene Laherparepvec for the Treatment of Peritoneal Surface Malignancies (TEMPO)

Clinical TrialPrincipal Investigator · Awarded by Amgen, Inc. · 2019 - 2025

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Education


Duke University · 1999 M.D.