Andreas M. Kaiser, M.D.

Before joining City of Hope, Dr. Kaiser was a professor of clinical surgery at USC since 2000, and served as interim chairman of the Department of Colorectal Surgery from 2008-2009. He is board certified by the Swiss Board of Surgery in General Surgery (1998) and Visceral Surgery (2006), and by the European Surgery Qualification Board in Coloproctology (2002). He is a fellow of the American College of Surgeons (F.A.C.S.) and of the American Society of Colon and Rectal Surgeons (F.A.S.C.R.S.), and a member of several national and international professional associations and committees. He is a member of the NIH Advisory Board for the Pelvic Floor Dysfunction Network of the National Institutes of Health.
Services
Technology
- Robotic surgery, laparoscopic surgery, including 3D laparoscopy, (robotic) transanal minimally invasive surgery forrectal polyps and cancer (r-TAMIS)
- Transanal endoscopic microsurgery for rectal polyps and cancer
- Endoluminal surgical intervention, combined endoscopic-laparoscopic surgery
- Anorectal: stapled hemorrhoidectomy (PPH), sacral nerve stimulation, complex reconstructions
- Continent ileostomy (T-pouch, Kock pouch, BCIR)
Diseases
Continence Preservation (Sphincter Preservation)
Transfusion-Free Surgery/Jehovah’s Witness program
Fecal Incontinence, including:
Diagnostics
Colonoscopy, advanced endoscopy, endoluminal surgical intervention, combined endoscopic-laparoscopic surgery, endorectal ultrasound, anophysiology testing (manometry, EMG, pudendal nerve testing)2006, Swiss FMH Subspecialty Board Certification in Visceral Surgery (FMH 28741, valid indefinitely)
2002, EBSQ European Board of Surgery Qualification in Coloproctology (part II)
2001, EBSQ European Board of Surgery Qualification in Coloproctology (part I)
1998, Swiss FMH Board Certification in General Surgery (FMH 28741, valid indefinitely)
1989, Doctorate in Medicine, University of Zurich, Zurich, Switzerland
1988, M.D., (Swiss Federal Diploma as Physician), University of Zurich, Zurich, Switzerland
1984, Preclinical Medical School, University of Fribourg, Fribourg, Switzerland
2000-2001, Clinical Fellowship in Colorectal Surgery, University of Southern California, Los Angeles, CA
1998-2000, Department of Surgery, Clinic for Visceral Surgery, University Hospital Zürich, Zurich, Switzerland
1997, Clinical Observership at Memorial Sloan-Kettering Cancer Center, Department of Surgery, New York, NY
1993-1995, Research Fellowship, Harvard School of Medicine and Beth Israel Hospital, Boston, MA
1995-1998, Department of Surgery, University Hospital Zürich (Prof. Dr. F. Largiadèr
1990-1993, Department of Surgery, University Hospital Zürich (Prof. F. Largiadèr)
1991-1992, Division of Surgery, County Hospital Wattwil SG (Dr. U. Gasser/Dr. K. Balmer)
1991, Pediatric Surgery, University Children's Hospital, Zürich (Prof. U.G. Stauffer)
1989, Institute of Pathology, City Hospital Triemli Zürich (Prof. R. Maurer)
2020-present, Chief, Division of Colorectal Surgery, Department of Surgery, City of Hope, Duarte, CA
2020-present, Professor, Department of Surgery, City of Hope, Duarte, CA
2012-2019, Professor of Clinical Surgery, Keck School of Medicine of USC, Los Angeles, CA
2006-2012, Associate Professor of Clinical Surgery, Keck School of Medicine of USC, Los Angeles, CA
2008-2009, Interim Chairman, Department of Colorectal Surgery, University of Southern California, Los Angeles, CA
2001, Assistant Professor of Clinical Surgery, Keck School of Medicine of USC, Los Angeles, CA
2000-2001, Clinical Instructor of Surgery, Keck School of Medicine of USC, Los Angeles, CA
1999-2000, Lecturer in Surgery, University of Zurich, Zurich, Switzerland
Colon cancer, rectal cancer and anal cancer (including hereditary cancer syndromes):
2. Define the role of various surgical modalities (endoluminal, MIS, MAS, etc.) as to their appropriateness in the management of premalignant, malignant and specifically locally advanced or metastatic disease (T4, sphincter invasion, M1b disease, carcinomatosis, etc.).
3. Define the best sequence of multimodality treatment (standard neoadjuvant vs total neoadjuvant vs adjuvant treatment) for rectal cancer depending on the stage at presentation and the presence or absence of local tumor complications (obstruction, perforation, fistulization).
4. Analyze the functional outcomes and quality of life of various sphincter-preserving surgeries for rectal cancer, specifically endoluminal, taTME vs abdominal oncological resection, alone and if further impacted by complementary modalities (radiation, chemotherapy).
Colorectal surgeries:
2. Comprehensive cost-benefit analysis
Cancer prevention:
2. Include genetic profiles to better define risk categories and frequency of surveillance.
Inflammatory bowel disease and diverticulitis:
2. Fine-tune surgical interventions.
3. Expand the role of less invasive surgeries.
Functional disorders:
2018-2019, KSOM/USC Outstanding Teacher Award in Surgery Clerkship
2014-2019, Castle Connolly Regional Top Doctor
2016, USC Keck School and Los Angeles County Excellence in Teaching Award
2014, USC Keck School and Los Angeles County Excellence in Teaching Award
2014, Victor Fazio, MB, MS Award for Editorial Excellence, Dis Colon Rectum
2010, USC Keck School and Los Angeles County Excellence in Teaching Award
2010, Fellowship of the American Society of Colon and Rectal Surgeons (FASCRS)
2004, Fellowship of the American College of Surgeons
1997, Research Grant by the Olga-Mayenfisch Foundation in Zurich, Switzerland
1995, Scholarship of the European Pancreatic Club for the work "Relationship between the Severity, Apoptosis and Necrosis in Five Models of Acute Experimental Pancreatitis"
1993-1995, Research grant of the Swiss National Science Foundation (SNSF grant #81ZH-36652)
1994, Young Investigator Award of the American Gastroenterological Association, the American Pancreas Association and of the International Association of Pancreatology for the work "Relationship between apoptosis and necrosis in pancreatitis induced by common bile-pancreatic duct obstruction in opossums and rats"
1982, “Top of the Year” graduate, Gymnasium (High School)
2017-present, NIH Advisory Board Member, Pelvic Floor Network
2012-present, Society of University Surgeons
2011-present, Society of American Gastrointestinal and Endoscopic Surgeons
2010-present, Fellow of the American Society of Colon and Rectal Surgeons
2010-present, Association for Academic Surgery
2009-present, Foederatio Medicorum Chirurgicorum Helvetica
2008-present, International Society of University Colorectal Surgeons
2006-present, European Society of Coloproctology
2006-present, Society of Laparoendoscopic Surgeons
2002-2006, European Association of Coloproctology (merged into European Society Coloproctology - see above)
2004-present, Southern California Society of Colon and Rectal Surgeons
2004-present, Fellow of the American College of Surgeons
2004-present, American Medical Association
2001-present, American Society of Colon and Rectal Surgeons
2000-present, Society of Surgeons of the Alimentary Tract
1999-present, Association of Invasive and Operative Physicians of Switzerland (Foederatio Medicorum Scrutantium)
1999-present, Swiss Surgical Society
1996-present, Swiss Society for Visceral Surgery
1994-2000, Swiss Society for Research in Surgery
1993-present, American Pancreatic Association
1993-present, Massachusetts Medical Society
1997-2006, New York Academy of Sciences
1988-present, Swiss Medical Association (Foederatio Medicorum Helveticorum)
BOOKS
- Kaiser AM. The McGraw-Hill Manual of Colorectal Surgery. McGraw-Hill, New York, 2008. 760 pages. ISBN 978-0-07-159070-9.
- Kaiser AM (Editor): Hereditary colorectal cancer. Seminars in Colon Rectal Surgery 2011;22(2):63-146 (June 2011).
- Sylla P, Kaiser AM, Popovich D (Eds): SAGES Manual Colorectal Surgery 2018-2019: 40 chapters. ISBN 978-3-030-24811-6. Springer Publisher, 2019
- Kaiser AM (Colorectal Section Editor): In: S.E.H. Scott-Conner: Chassin's Operative Strategy in General Surgery. 5th edition, 2016-2020: 57 colorectal surgery chapters). Springer Publisher, 2021.
FURTHER PUBLICATIONS
- Mirza KL, Chu DI, Dineen S, Stocchi L, Deppe LM, Kaiser AM. PG/CME Committee of the Society of Surgeons of theAlimentary Tract. SSAT PG/CME Committee Symposium Highlights: Perioperative Management-Best Practice in SurgicalQuality and Safety. J Gastrointest Surg. 2021 Jan 8. doi: 10.1007/s11605-020-04839-5. Epub ahead of print. PMID:33420653
- Hawkins AT, Albutt K, Wise PE, Alavi K, Sudan R, Kaiser AM, Bordeianou L. Continuing Education Committee of the SSAT.Abdominoperineal Resection for Rectal Cancer in the Twenty-First Century: Indications, Techniques, and Outcomes. JGastrointest Surg. 2018 Aug;22(8):1477-1487. doi: 10.1007/s11605-018-3750-9. Epub 2018 Apr 16. PMID: 29663303.
- Vartanian ED, Lynn JV, Perrault DP, Wolfswinkel EM, Kaiser AM, Patel KM, Carey JN, Hsieh PC, Wong AK. Risk FactorsAssociated with Reconstructive Complications Following Sacrectomy. Plast Reconstr Surg Glob Open. 2018 Nov5;6(11):e2002. doi: 10.1097/GOX.0000000000002002. PMID: 30881800; PMCID: PMC6414132.
- Zelhart M, Kaiser AM. Robotic vs Laparoscopic vs Open Colorectal Surgery: Towards Defining Criteria to the Right Choice. Surg Endosc 2017.
- Maguire LH, Alavi K, Sudan R, Wise PE, Kaiser AM, Bordeianou L. Surgical Considerations in the Treatment of Small Bowel Crohn's Disease. J Gastrointest. Surg 2017; 21(2):398-411
- Saldana Ruiz N, Kaiser AM. Fecal Incontinence – challenges and solutions. World J Gastroenterol 2017; 23(1):11-24.
- Rosen D, Kaiser AM. Seton management for transphincteric fistula in ano: harm or charm. Colorectal Disease, 2016;18:488-495.
- Devaraj B, Liu W, Tatum J, Cologne K, Kaiser AM. Medically Treated Diverticular Abscess Associated with High Risk of Recurrence and Disease Complications. Dis. Colon Rectum 2016; 59:208-15.
- Paquette IM, Varma MG, Kaiser AM, Steele SR, Rafferty JF. The American Society of Colon and Rectal Surgeons' Clinical Practice Guideline for the Treatment of Fecal Incontinence. Dis Colon Rectum. 2015;58(7):623-36.
- Alavi K, Chan S, Wise P, Kaiser AM, Sudan R, Bordeianou L. Fecal Incontinence: Etiology, Diagnosis, and Management. J Gastrointest Surgy 2015:19:1910-21.
- Devaraj B, Kaiser AM. Surgical management of ulcerative colitis in the era of biologicals. Inflammatory Bowel Disease 2015; 21:208-220.
- Kaiser AM, Hogen R, Bordeianou L, Alavi K, Wise PE, Sudan R. Clostridium difficile infection from a surgical perspective. J Gastrointest Surg, 2015; 19:1363-1377.
- Devaraj B, Kaiser AM. Impact of Technology on Indications and Limitations for Transanal Surgical Removal of Rectal Neoplasms. World J Surg Proced, 2015; 5(1):1-13.
- Devaraj B, Kaiser AM. Surgical management of ulcerative colitis in the era of biologicals. Inflamm Bowel Dis 2015; 21 (1): 208-20.
- Lamb MN, Kaiser AM. Elective Resection versus Observation After Non-Operative Management of Complicated Diverticulitis with Abscess - A Systematic Review and Meta-Analysis. Dis. Colon Rectum 2014; 57 (12): 1430-40.