About Us


Highland Hospital’s Bariatric Center is the regional leader in bariatric surgery.

Our team is recognized for providing high-quality, comprehensive bariatric surgical care even with the most challenging and complex patients. We take a multidisciplinary approach and partner with patients for the best long-term outcomes.

Meet Our Surgeons

William E. O'Malley, M.D.

William E. O’Malley, M.D.

Dr. O’Malley is the Director of the Bariatric Surgery program at Highland Hospital. He has been a bariatric surgeon since 1997 and has performed more than 4,000 bariatric surgical procedures in his career. He introduced laparoscopic bariatric surgery to the region in 2000.  Dr. O’Malley has traveled within the region and internationally to teach and demonstrate advanced laparoscopic techniques in bariatric surgery. He has mentored and trained numerous surgeons to perform the surgery. A familiar face on television, he was featured on the Oprah Winfrey show and is known as a contributing expert for Good Housekeeping and Redbook Magazines.

Dr. O’Malley is a past president of the Rochester Surgical Society. He received his medical degree from Stony Brook University Health Science Center School of Medicine and did his residency in surgery at the University of Rochester School of Medicine and Dentistry and his internship in surgery at SUNY Buffalo

Accepting Accepting New Patients -Appointment: (585) 341-0366


Dr Johnson Photo

Joseph A. Johnson, M.D.

Dr. Johnson, who also serves as Chief of the Bariatric/GI division within the University of Rochester Department of Surgery, is an award winning physician and a former president of the Rochester Surgical Society. He received his medical degree from New York Medical College and did his residency and internships in general surgery at the University of Rochester Medical Center.

Dr. Johnson is known for his expertise in minimally invasive surgery and has been in practice for more than 20 years.

Accepting Accepting New Patients -Appointment: (585) 341-0366


Aaron Sabbota, M.D., Ph.D.

Aaron Sabbota, M.D., Ph.D.

Dr. Sabbota is the Medical Director for Highland’s Obesity Medicine Services. He is a bariatric surgeon and diplomate of the American Board of Obesity Medicine (ABOM). He received his medical degree, as well as a PhD in Cancer Biology, from Wayne State University School of Medicine. After a residency in General Surgery at the University of Rochester Medical Center, he did a Fellowship in Bariatric/Minimally Invasive Surgery at Fresno Heart and Surgical Hospital.

Dr. Sabbota is passionate about the field of obesity and focuses on providing individualized and comprehensive care. His evidence-based treatment plans incorporate both surgical and non-surgical options, inclusive of a meal replacement program and weight loss medications. He is able to provide therapeutic interventions including diet, physical activity, and behavioral change with the goal of improved health outcomes.

Accepting Accepting New Patients -Appointment: (585) 341-0366

Meet Our Clinical Staff

Photo of Julie Anne Leo PA

Julie Anne Leo, PA

Photo of Heather Allerton PA

Heather Allerton, PA

Photo of Molly Adcock FNP

Molly Adcock, FNP

Photo of Alicia Peters RN

Alicia Peters, RN

Photo of Piera Carubia RDN

Piera Carubia, RDN

Photo of Sandy Jolley RDN

Sandy Jolley, RDN

Photo of Molly Ranney RDN

Molly Ranney, RDN


Our Location

Bariatric Center
at Highland Hospital

1000 South Ave. Box 95
Rochester, NY 14620

Get Map and Directions
Call Us (585) 341-0366