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


Dr Maria Durdach Photo

Maria Durdach, M.D.

Dr. Maria Durdach earned her medical degree from the Pennsylvania State College of Medicine and completed her residency at the University of Rochester Medical center. She also completed a fellowship in bariatrics and minimally invasive surgery at the Buffalo Jacobs School of Medicine and Biomedical Sciences. She is a strong proponent of developing a team-based and collaborative approach towards patient care while relying on a network of strong relationships and professional trust when implementing a course of treatment.

Dr. Durdach has a special focus on robotic bariatric and metabolic surgery. This is driven by her passion to transform lives and make a profound impact on the health and well-being of individuals battling obesity. The remarkable transformations she has witnessed, both physically and emotionally in not only patients, but also family members, fuel her determination. She strives to advance the field and provide patients with compassionate, personalized care and life-changing results.

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, RD,

Photo of Sandy Jolley RDN

Sandy Jolley, RDN,

Photo of Molly Ranney RDN

Molly Ranney, MS,


Our Location

Bariatric Center
at Highland Hospital

1000 South Ave.
Rochester, NY 14620

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