Covenant Health is an innovative, Catholic regional delivery network and a leader in values based, not-for-profit health and elder care. We sponsor hospitals, nursing homes, assisted living residences and other health and elder care organizations throughout New England.

Main Surgical Services


The team at St. Mary's Surgical Associates has a tradition of excellence in clinical care that has earned them a reputation as medical leaders in our community. Their expertise is in combining life -saving medical technologies and surgeries with compassionate and individualized care. They are knowledgeable and experienced in a diverse array of procedures, including breast, thyroid, and thoracic surgery, surgical oncology, and advanced laparoscopic procedures.. 

General Surgeons
Maria Ikossi, MD, PhD, FACS
Oncologic & Thoracic Surgery
Thomas Moore, MD
General Surgery
Catherine O'Connor, MD, FACS
Breast and General Surgery
Roberto J. Vidri, MD
General Surgery

99 Campus Avenue, 4th Floor, Suite 401, Lewiston, ME

ENT (Ear, Nose & Throat)
Gregory Penner, MD
91 Campus Avenue, 1st Floor, C190, Lewiston, ME

Please call 207-777-8650 to schedule an appointment
or consultation with these providers.

St. Mary's Health System • 93 Campus Avenue • Lewiston, ME 04240