- Associate Professor of Surgery
- Co-Chief, Mastery in General Surgery
Board Certification
- Surgery
Education
Medical School- Queen's University School of Medicine, Canada
- University of Toronto, General Surgery
- Harvard Medical School, Beth Israel Deaconess Medical Center, Advanced Laparoscopy and Bariatric Surgery
- Surgical Scientist (PhD) , Institute of Medical Sciences, University of Toronto. Click here for Dr. Powers thesis.
Affiliated Specialty Center
Ambulatory Surgery Center
Bariatric and Metabolic Weight Loss Center
Heartburn and Esophageal Center
Hernia Center
Clinical Interests/Expertise
- Achalasia
- Bariatric Surgery
- Dysphagia (difficulty swallowing)
- Esophageal conditions and diseases
- Gallbladder disease
- Gastric bypass
- Gastroesophageal reflux disease (GERD)
- Hernias
- Laparoscopic adrenalectomy
- Laparoscopic splenectomy
- Management of diaphragmatic hernias
- Minimally invasive surgery
- Obesity
- Revisional bariatric surgery
- Robotic surgery
- Sleeve gastrectomy

Contact Information
Division of Bariatric and Gastrointestinal Surgery
Department of Surgery, Health Sciences Center T18-040
Stony Brook Medicine
Stony Brook, NY 11794-8191
Tel: 631-444-2274 (Bariatric Surgery)
Tel: 631-638-3969 (General Surgery)
Fax: 631-444-6176
For patient care information, including insurance participation and practice locations, click here.
- Personal Statement
- Honors
- Publications
- Additional
I am dedicated to help patients achieve their individual health and lifestyle goals using advanced surgical technologies and compassionate care.
My research interests focus on developing clinical pathways for surgical treatments and educational platforms for surgery residents and medical students that enhance quality and safety of patient care.
With the experienced multidisciplinary team at Stony Brook Bariatric and Weight Loss Center, we provide a wholistic approach and state of the art minimally invasive techniques to treat obesity and its related diseases.
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Top Hat Awards for Clinical Care (2016, 2017, 2018)
Top Docs 2015 of Roanoke Valley (2015)
Award for Dedication and Excellence in Clinical Care (2009)
Region XII Winner, Basic Science, Scientific Papers on Trauma Residents' Competition, The American College of Surgeons (2005)
Honorable Mention, Gallie Bateman Resident's Competition, University of Toronto (2005)
Wyeth Scholar Award, Resident Research Scholarship, The American College of Surgeons (2004)
Canadian Institutes of Health Research/Bayer Healthcare/CIDS Fellowship, University of Toronto (2004)
William S. Fenwick Fellowship Postgraduate Medicine Award, University of Toronto (2004)
1st Place The Shock Society Scientific Talk Competition, The Shock Society (2003)
Travel Award, The Shock Society Abstract Competition, The Shock Society (2003)
1st Place University of Toronto Annual Assembly of Surgeons and Residents Residents' Competition, University of Toronto (2003)
1st Place Surgical Infection Society Poster Competition, Surgical Infection Society (2002)
3rd Place Annual Trauma Research Day, Residents' Competition, University of Toronto (2002)
Honorable Mention, Gallie Bateman Residents' Competition, University of Toronto (2002)
Canadian Institutes of Health Research and Postdoctoral Fellowship, University of Toronto (2002)
Canadian Institutes of Health Research/Glaxo Welcome/CIDS Fellowship, University of Toronto (2001)
Reymont Foundation Scholarship of Academic Distinction (1996)
Massachusetts General Hospital, Research Scholarship, Harvard Medical School (1995)
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Book Chapters
Powers, K.A., Whitmer K., (2019). Chapter 121: Surgical Procedures performed in Radiology Suites. In Daniel B. Jones and Steven D. Schwaitzberg, Operative Endoscopic and Minimally Invasive Surgery (1st Edition). CRC Press. Published.
Powers, K. A., Knott, E. M., (2015). Chapter 13: Laparoscopic Inguinal Hernia Repair. In D. B. Jones, R. Andrews, J. F. Critchlow, & B. E. Schneider (Eds.), Minimally Invasive Surgery Laparoscopy, Therapeutic Endoscopy and NOTES (1st Edition). JP Medical Publishers. Published.
Powers, K. A., Jones, D. B., (2012). Chapter 202: Totally Extraperitoneal Inguinal Hernia Repair. In J. E. Fischer, F. B. Pompselli, & G. R. Upchurch Jr. (Eds.), Mastery of Surgery (6th Edition). Wolters Kluwer Health/Lippincott Williams & Wilkins. Published.
Powers, K. A., (2012). Chapter 29: High Fidelity Simulation: Mock Operating Room. In S. T. Tsuda, D. J. Scott, & D. B. Jones (Eds.), Textbook of Simulation Surgical Skills and Team Training (1st Edition). Cine-Med Inc.. Published.
Powers, K. A., (2010). Gastric Pacing/Neuromodulation. In D. B. Jones, B. E. Schneider, & T. Olbers (Eds.), The Atlas of Metabolic and Weight Loss Surgery (1st Edition). Cine-Med Inc.. Published.
Powers, K. A., Rehrig, S. T., Jones, D. B., (2009). Chapter 7: Simulation and Simulators. In N. J. Soper, L. L. Swanstrom, & W. S. Eubanks (Eds.), Mastery of Endoscopic and Laparoscopic Surgery (3rd Edition). Lippincott Williams and Wiklins. Published.
Powers, K. A., Jones, D. B., Rehrig, S. T., (2008). Chapter 53: Safer Surgery Through Simulation. In S. B. Jones (Ed.), Obesity Surgery: Patient Safety and Best Practices (1st Edition). Woodbury: Cine-Med Publishing Inc.. Published.
Journal ArticlesTelem, D. A., Gould, J., Pesta, C., Powers, K. A., Majid, S., Greenberg, J. A., Teixeira, A., Brounts, L., Lin, H., DeMaria, E., Rosenthal, R. (2017, May 1). American Society for Metabolic and Bariatric Surgery: care pathway for laparoscopic sleeve gastrectomy. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery, 13(5). doi: 10.1016/j.soard.2017.01.027. PMID: 28416400. Published.
Hamill, M. E., Reed, C. R., Fogel, S. L., Bradburn, E. H., Powers, K. A., Bower, K. L., Baker, C. C., Collier, B. R. (2017, April 1). Contact Isolation Precautions in Trauma Patients: An Analysis of Infectious Complications. Surgical infections, 18(3), 273-281. doi: 10.1089/sur.2015.094. PMID: 28085576. Published.
Telem, D. A., Majid, S. F., Powers, K. A., DeMaria, E., Morton, J., Jones, D. B. (2017, February 1). Assessing national provision of care: variability in bariatric clinical care pathways. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery, 13(2). doi: 10.1016/j.soard.2016.08.002. PMID: 27887932. Published.
Seymour, N. E., Paige, J. T., Arora, S., Fernandez, G. L., Aggarwal, R., Tsuda, S. T., Powers, K. A., Langlois, G., Stefanidis, D. (2016, January 1). Putting the MeaT into TeaM Training: Development, Delivery, and Evaluation of a Surgical Team-Training Workshop. Journal of surgical education, 73(1). doi: 10.1016/j.jsurg.2015.08.008. PMID: 26481423. Published. Page 10
Tawadros, P. S., Powers, K. A., Ailenberg, M., Birch, S. E., Marshall, J. C., Szaszi, K., Kapus, A., Rotstein, O. D. (2015, August 1). Oxidative Stress Increases Surface Toll-Like Receptor 4 Expression in Murine Macrophages Via Ceramide Generation. Shock (Augusta, Ga.), 44(2). doi: 10.1097/SHK.0000000000000392. PMID: 25944793. Published.
Powers, K. A., Rehrig, S. T., Schwaitzberg, S. D., Callery, M. P., Jones, D. B. (2009, May 1). Seasoned surgeons assessed in a laparoscopic surgical crisis. Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract, 13(5). doi: 10.1007/s11605-009-0802-1. PMID: 19190969. Published.
Powers, K. A., Rehrig, S. T., Jones, D. B. (2008). Integrating Simulation in Surgery as a Teaching Tool and Credentialing Standard. J Gastrointest Surg. Published.
Powers, K. A., Rehrig, S. T., Irias, N., Albano, H. A., Malinow, A., Jones, S. B., Moorman, D. W., Pawlowski, J. B., Jones, D. B. (2008, April 1). Simulated laparoscopic operating room crisis: An approach to enhance the surgical team performance. Surgical endoscopy, 22(4). doi: 10.1007/s00464-007-9678-x. PMID: 18071813. Published.
Rehrig, S. T., Powers, K. A., Jones, D. B. (2008, February 1). Integrating simulation in surgery as a teaching tool and credentialing standard. Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract, 12(2). doi: 10.1007/s11605-007-0250-8. PMID: 18004630. Published.
Powers, K. A., Rehrig, T. S., Irias, N., Albano, H. A., Feinstein, D. M., Johansson, A. C., Jones, A. B., Malinow, A., Moorman, D. W., Pawlowski, J. B., Jones, D. B. (2007). Simulated Laparoscopic Operating Room Crisis: Approach to Enhance the Surgical Team Performance. Surg Endosc.. Published.
Tawadros, P. S., Powers, K. A., Yang, I., Becker, D. A., Ginsberg, M. D., Szaszi, K., Kapus, A., Rotstein, O. D. (2007, November 1). Stilbazulenyl nitrone decreases oxidative stress and reduces lung injury after hemorrhagic shock/resuscitation and LPS. Antioxidants & redox signaling, 9(11). doi: 10.1089/ars.2007.1765. Published.
Powers, K. A., Rehrig, S. T., Jones, D. B. (2007, May 1). Financial impact of obesity and bariatric surgery. The Medical clinics of North America, 91(3). doi: 10.1016/j.mcna.2007.01.001. PMID: 17509381. Published.
Powers, K. A., Szászi, K., Khadaroo, R. G., Tawadros, P. S., Marshall, J. C., Kapus, A., Rotstein, O. D. (2006, August 7). Oxidative stress generated by hemorrhagic shock recruits Toll-like receptor 4 to the plasma membrane in macrophages. The Journal of experimental medicine, 203(8). doi: 10.1084/jem.20060943. PMID: 16847070. Published.
Powers, K. A., Zurawska, J., Szaszi, K., Khadaroo, R. G., Kapus, A., Rotstein, O. D. (2005, January 1). Hypertonic resuscitation of hemorrhagic shock prevents alveolar macrophage activation by preventing systemic oxidative stress due to gut ischemia/reperfusion. Surgery, 137(1). doi: 10.1016/j.surg.2004.05.051. Published.
Khadaroo, R. G., Fan, J., Powers, K. A., Fann, B., Kapus, A., Rotstein, O. D. (2004, October 1). Impaired induction of IL-10 expression in the lung following hemorrhagic shock. Shock (Augusta, Ga.), 22(4). Published.
Khadaroo, R. G., Fan, J., Powers, K. A., Fann, B., Kapus, A., Rotstein, O. D. (2004, October 1). Impaired induction of IL-10 expression in the lung following hemorrhagic shock. Shock (Augusta, Ga.), 22(4). PMID: 15377888. Published.
Khadaroo, R. G., He, R., Parodo, J., Powers, K. A., Marshall, J. C., Kapus, A., Rotstein, O. D. (2004, August 1). The role of the Src family of tyrosine kinases after oxidant-induced lung injury in vivo. Surgery, 136(2). doi: 10.1016/j.surg.2004.05.029. PMID: 15300219. Published. Page 11
Khadaroo, R. G., He, R., Parodo, J., Powers, K. A., Marshall, J. C., Kapus, A., Rotstein, O. D. (2004, August 1). The role of the Src family of tyrosine kinases after oxidant-induced lung injury in vivo. Surgery, 136(2). doi: 10.1016/j.surg.2004.05.029. Published.
Khadaroo, R. G., Kapus, A., Powers, K. A., Cybulsky, M. I., Marshall, J. C., Rotstein, O. D. (2003, November 28). Oxidative stress reprograms lipopolysaccharide signaling via Src kinase-dependent pathway in RAW 264.7 macrophage cell line. The Journal of biological chemistry, 278(48). doi: 10.1074/jbc.M302660200. Published.
Khadaroo, R. G., Kapus, A., Powers, K. A., Cybulsky, M. I., Marshall, J. C., Rotstein, O. D. (2003, November 28). Oxidative stress reprograms lipopolysaccharide signaling via Src kinase-dependent pathway in RAW 264.7 macrophage cell line. The Journal of biological chemistry, 278(48). doi: 10.1074/jbc.M302660200. PMID: 12896983. Published.
Powers, K. A., Kapus, A., Khadaroo, R. G., He, R., Marshall, J. C., Lindsay, T. F., Rotstein, O. D. (2003, September 1). Twenty-five percent albumin prevents lung injury following shock/resuscitation. Critical care medicine, 31(9). doi: 10.1097/01.CCM.0000084846.45830.AA. PMID: 14501967. Published.
Powers, K. A., Woo, J., Khadaroo, R. G., Papia, G., Kapus, A., Rotstein, O. D. (2003, August 1). Hypertonic resuscitation of hemorrhagic shock upregulates the anti-inflammatory response by alveolar macrophages. Surgery, 134(2). doi: 10.1067/msy.2003.246. PMID: 12947335. Published.
Khadaroo, R. G., Parodo, J., Powers, K. A., Papia, G., Marshall, J. C., Kapus, A., Rotstein, O. D. (2003, August 1). Oxidant-induced priming of the macrophage involves activation of p38 mitogen-activated protein kinase through an Src-dependent pathway. Surgery, 134(2). doi: 10.1067/msy.2003.228. PMID: 12947324. Published.
Powers, K. A., Kapus, A., Khadaroo, R. G., Papia, G., Rotstein, O. D. (2002, August 1). 25% Albumin modulates adhesive interactions between neutrophils and the endothelium following shock/resuscitation. Surgery, 132(2). Published.
Powers, K. A., Kapus, A., Khadaroo, R. G., Papia, G., Rotstein, O. D. (2002, August 1). 25% Albumin modulates adhesive interactions between neutrophils and the endothelium following shock/resuscitation. Surgery, 132(2). PMID: 12219040. Published.
Khadaroo, R. G., Lu, Z., Powers, K. A., Papia, G., Kapus, A., Rotstein, O. D. (2002, August 1). Impaired activation of mitogen-activated protein kinases after hemorrhagic shock. Surgery, 132(2). PMID: 12219035. Published.
Powers, K. A., Lohmann, R., Souba, W. W., Bode, B. P. (1998). Stimulation of rat hepatic amino acid transport by burn injury. Metabolism. Published.
Powers, K. A., Dackiw, A. P., Nathens, A. B., Cheung, P. Y., Fingerote, R., Levy, G. A., Rotstein, O. D. (1995). Induction of macrophage procoagulant activity by murine hepatitis virus strain 3: role of tyrosine phosphorylation. J Virol. Published.
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Certifications:
Diplomate of the American Board of Surgery American Board of Surgery (ABS) Recertified in December 2017
Fellow of The American College of Surgeons (FACS) The American College of Surgeons
Licentiate of the Medical Council of Canada Medical Council of Canada (MCC)
Fellow of The Royal College of Physicians and Surgeons of Canada (FRCSC) The Royal College of Physicians and Surgeons of Canada
Certified in Fundamental Use of Surgical Energy (FUSE) The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
Certified in Fundamentals of Endoscopic Surgery (FES) The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
Certified in Fundamentals of Endoscopic Surgery (FLS) The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
TeamSTEPPS Instructor Certificate The Agency for Healthcare Research and Quality (AHRQ)
Advanced Trauma Life Support (ATLS) Instructor Certificate American College of Surgeons (ACS)
Advanced Trauma Operative Management (ATOM) Certificate American College of Surgeons
Advanced Cardiovascular Life Support (ACLS) Provider American Heart Association
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Professional Memberships:
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American Society of Metabolic and Bariatric Surgery (ASMBS)
Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
American College of Surgeons (ACS)
Royal College of Physicians and Surgeons of Canada (RCPSC)
College of Physicians and Surgeons of Ontario (CPSO)
Professional Committees and Service:
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Co-Chair Publications Committee, SAGES, 2017 - Present
President Virginia Chapter of the American Society for Metabolic and Bariatric Surgery, (ASMBS) 2016-2018
Acute Care Committee, SAGES, 2017 - Present
Patient Safety Committee (ASMBS) 2014 - Present
Fundamental Use of Surgical Energy (FUSE) Committee, SAGES, 2011- Present