William E. O'Malley, M.D.

William E. O'Malley, M.D.

Contact Information

Box HH 20
Department of Surgery

Office: (585) 341-0366
Fax: (585) 341-0681

Professional Bio

Dr. O'Malley is an Assistant Professor of Clinical Surgery at the University of Rochester Medial Center and the Director of Bariatric Surgery at Highland Hospital. He has been a bariatric surgeon since 1997 and has performed nearly 4,000 bariatric surgical procedures. He introduced Laparoscopic Bariatric surgery to the region in 2000.

He was certified by the American Board of Surgery in 1997.

Dr. O'Malley performs multiple types of Bariatric procedures depending on an individual patients need. He is experienced in Laproscopic Gastric Bypass, Open Gastric Bypass, Laparascopic Duodenal Switch, Open Duodenal Switch, Banded Gastroplasty, Laparascopic Gastric Banding and Laparoscopic Sleeve Gastrectomies. Dr. O'Malley performs the largest number of Bariatric procedures in New York.

Dr O'Malley has traveled within the Region and internationally to teach and demonstrate advanced Laproscopic techninques in Bariatric Surgery. He has mentored and trained numerous surgeons to perform Bariatric Surgery profession. Recently, Dr. O'Malley has been featured on the Oprah Winfrey show and was asked to contribute to Good Housekeeping/Redbook magazine in 2009 as a subject matter expert.

Dr. O'Malley is actively involved in improving the Quality of patient care at Highland Hospital. He has been Co-Chair of the Surgical Quality Committee and is a Surgical Representative for the Credentialing Committee. He is the Medical Director of the Bariatric Fellowship program.

- Dr. O'Malley is a member of the Fellow American College of Surgeons 1999-Present
- Rochester Surgical Society, 1999- Present ( Past President)
- Monroe County Medical Society 2001-Present
- American Society of Metabolic and Bariatric Surgery, 2001-Present

Recent Journal Articles

Showing the 5 most recent journal articles. 13 available »

Ahmed, A. R., G. Rickards, S. Husain, J. Johnson, W. O'Malley, and T. Boss. "Bioabsorbable glycolide copolymer staple-line reinforcement decreases internal hernia rate after laparoscopic Roux-en-Y gastric bypass". Obes Surg. 2008; 18: 797-802.
Gusenoff, J. A., S. Messing, W. O'Malley, and H. N. Langstein. "Temporal and demographic factors influencing the desire for plastic surgery after gastric bypass surgery". Plast Reconstr Surg. 2008; 121: 2120-2126.
Ahmed, A. R., G. Rickards, S. Messing, S. Husain, J. Johnson, T. Boss, and W. O'Malley. "Roux limb obstruction secondary to constriction at transverse mesocolon rent after laparoscopic Roux-en-Y gastric bypass". Surg Obes Relat Dis. 2008; .
Gusenoff, J. A., R. P. Pennino, S. Messing, W. E. O'Malley, T. J. Boss, and H. N. Langstein. "Post-bariatric surgery reconstruction: patient myths, perceptions, cost, and attainability strategies". Plast Reconstr Surg. 2008; 122: 1e-9e.
Plast Reconstr Surg 122:951-958. "Patterns of plastic surgical use after gastric bypass: who can afford it and who will return for more". 2008; 122: 951-958.

Current Appointments

Assistant Professor of Clinical Surgery - Department of Surgery, Bariatric/GI (SMD) - Primary


Surgery - American Board of Surgery


MD | Medicine | Stony Brook Univ Health Sciences Center School of Medicine1991
BA | Biology | University of Rochester1985

Post-Doctoral Training & Residency

Residency in Surgery at Univ. of Rochester School of Medicine and Dentistry09/01/1992 - 06/30/1996
Internship in Surgery at SUNY at Buffalo09/01/1991 - 06/30/1992