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Date of Birth
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February 14, 1957
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Personal Data
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Married; Three Children
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Elementary Education
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1963 -1971 St Mark’s School
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High School
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1971-1975 Blanchet High School, graduated with honors
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College
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1976 -1980 Carroll College, BA, Biology, graduated with honors
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Medical School
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1983 -1987 MD, University of Washington School of Medicine
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Residency
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1987-1988 Internship, General Surgery
Milton S. Hershey Medical Center
Pennsylvania State University
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1988-1992 Residency, General Surgery
Swedish Medical Center
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1992-1993 Chief Resident, General Surgery
Swedish Medical Center
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Graduate School
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2009-2010 Executive Development Program
Foster School of Business
University of Washington
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Board Certification
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1996 Diplomat of the American Board of Surgery
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2003 Recertified
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2014 Recertified; expires 2026
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Licensure
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Washington State renewed annually on February 14
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Military Experience
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United States Army, Major
1989 Commissioned
2001 Resigned Commission
2001 Honorable Discharge
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Employment
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1993-present Attending General Surgeon
Swedish Medical Group
Swedish Health Services
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1993-2012 Associate Director of General Surgery
Residency Program, Swedish Medical Center
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2005-2013 Medical Director of Surgery
Swedish Health Services
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2012-present Director of General Surgery Residency Program
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2013-2015 Vice President of Perioperative Services
Swedish Health Services
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2015 Executive Director of Advanced Surgical Services
Swedish Health Services
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Organizations/Positions
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Chair of Operating Room Executive Committee
Co-Chair of Block Scheduling Committee
Chair Surgery Value Analysis Team Committee
Co-Chair Surgery Quality Committee
Medical Director of 10 East
Medical Director of Tissue
Chair of Surgical Residency Advisory Committee
Chair of Clinical Competency Committee
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Graduate Medical Education Committee
Past Chair of Surgical Advisory Committee
Past Swedish Issaquah Surgery Planning and Operations Committee Member
Swedish Health Services
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1997-present Fellow of the American College of Surgeons
Past Chair of Local Admissions Committee
Washington State Chapter Councilor, Past Membership Chair,
Past Young Surgeons Representative
2008-2009 Washington State Chapter President
American College of Surgeons
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2011-present Clinical Associate Professor
Department of Surgery
University of Washington
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2007-present Board of Surgical Clinical Outcomes Assessment
Program (SCOAP), Washington State
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1997-present Seattle Surgical Society
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1999-present North Pacific Surgical Association
2008 Annual Meeting Program Chair
2007-2009 Program Committee
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2001-present Pacific Coast Surgical Association
2007 Local Events Chair
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2011-present Association of Programs Directors in Surgery
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Research Experience
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Pathophysiology of the Flail Chest: A Goat Model.
Medical Scientist Training Program Fellowship
June 1984-June 1987
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Abdominal Wound Dehiscence: Etiology and Surgical Management.
Washington State Chapter, American College of Surgeons,
June 1990
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Embryology and Anatomy of the Biliary Tract: Anomalies Found at Cholecystectomy.
Seattle Surgical Society,
January 1991. First Place Award, Residents’ Competition
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Efficacy of Endoscopically Placed Stents Versus Surgical
Palliation for Malignant Bile Duct Obstruction.
Washington State Chapter, American College of Surgeons,
June 1991
Poster Session, Society for Surgery of the Alimentary Tract,
May 1992
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The Use of Alpha-Methyl Tyrosine in the Surgical
Management of Adrenal Pheochromocytoma: A Case Report.
Seattle Surgical Society,
January 1992
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Management of Deep Vein Thrombosis in Pregnancy.
Washington State Chapter, American College of Surgeons,
June 1992
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Simplified Preperitoneal Marlex Hernia Repair.
North Pacific Surgical Association,
November 1992;
Seattle Surgical Society,
January 1993 - First Place Award, Residents’ Competition
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Small Bowel Obstruction Following Illeoanal Pouch Procedure.
Seattle Surgical Society,
January 1993
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Pancreaticoduodenectomy: A Ten Year Experience.
Washington State Chapter, American College of Surgeons,
June 1993 - First Place Award, Cancer Paper.
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Pneumobilia in Emphysematous Cholecystitis: A Case Report and Literature Review.
Washington State Chapter, American College of Surgeons,
June 1993
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Ehlers-Danlos Syndrome Type IV: A Deadly Variant for the Surgical Patient.
Washington State Chapter, American College of Surgeons,
June 1996
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Surgical Management of a Giant Cell Tumor of the Posterior Skull.
Washington State Chapter, American College of Surgeons,
June 1996
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A Cystic Pancreatic Mass in a Pregnant Female
Washington State Chapter, American College of Surgeons,
June 1997
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Unusual Abscess Patterns Following Dropped Gallstones During Laparoscopic Cholecystectomy
North Pacific Surgical Association Meeting,
November 1997
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A Prospective Trial of CT and Ultrasound in the Diagnosis of Appendicitis in the Atypcial Patient.
Seattle Surgical Society,
January 1999.
North Pacific Surgical Association Meeting,
November 1999
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Case Series: Appendiceal Diverticulitis
Washington State Chapter, America College of Surgeons,
June 2002.
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The Strong For Surgery Initiative – Optimizing Nutrition to Improve Surgical Outcomes.
Varghese, Kling, Fichera, Horton, Florence, Bastawrous, Johnson, O’Keefe, Thirlby, Javelli, Barton, Klamp, Kramer, Devlin and Flum.
Washington State Chapter, America College of Surgeons,
June 2013
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Non-Steroidal Anti-Inflammatory Drugs and the Risk of Anastomotic Failure: A Report from Washington State’s Surgical Care and Outcomes Assessment Program (SCOAP).
Hakkarainen, Dellinger, Alfonso-Cristancho, Bastawrous, Farrohki, Florence, Horton, Helton, Pietro, Steele, Varghese and Flum.
Washington State Chapter, America College of Surgeons,
June 2013.
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Publications
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Horton, MD and Florence, MG
Simplified preperitoneal marlex hernia repair,
American Journal of Surgery 1993; 165: 595-599
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Horton, MD and Florence, MG
Unusual abscess patterns following dropped gallstones during laparoscopic cholecystectomy,
American Journal of Surgery 1998; 175: 375-379
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Horton, MD, et al.
A prospective trial of CT and ultrasound in the diagnosis of appendicitis in the atypical patient,
American Journal of Surgery 2000; 179: 379-381
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Wallace, MD and Birch DW
A needs-assessment study for continuing professional development in advanced minimally invasive surgery,
Horton, MD – discussion,
American Journal of Surgery 2007; 193: 593-596
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Horton, MD
Transforming the Surgical Time Out Enhances Patient Safety
Physicians Practice 2009; 19:5:A5-A6
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Kwon, Florence, Grigas, Horton, Horvath, Johnson, Jurkovich, Klamp, Peterson, Quigley, Raum, Rogers, Thirlby, Thomason, Flum
Creating the learning healthcare system in surgery: Washington State’s surgical care and outcomes assessment program (SCOAP) at five years,
Surgery 2012; 151(2): 146-52
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Hakkarainen, Dellinger, Alfonso-Cristancho, Bastawrous, Farrohki, Florence, Horton, Helton, Pietro, Steele, Varghese and Flum
Non-steroidal anti-inflammatory drugs and the risk of anastomotic failure: a report from Washington State’s Surgical Care and Outcomes Assessment Program (SCOAP).
JAMA Surgery 2015;150(3):223-228
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Awards
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1980 Michael Murphy Award
Outstanding Collegiate Citizenship
Carrol College
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1994 Outstanding Teacher Award
Department of Graduate Medical Education
Swedish Medical Center
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1996 Distinguished Graduate Award
St. Mark’s School
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2000 General Surgery Residency Program
Teacher of the Year Award
Swedish Medical Center
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2001 Excellence in Teaching Award
Swedish Medical Center/Providence (Cherry Hill) Campus
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2010 Silver Level of Achievement
Richard H. Peterson Commitment to Excellence Award
Scheduling for Success – Improving OR Utilization Team
Swedish Medical Center
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