Virtual visits now available. You may be able to schedule a virtual visit with your provider. For more information, call your doctor’s office.
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.

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Demers, Marc L., MD

Surgery - General
About Clinical Interests Locations Media


  • Boston University School of Medicine, Boston MA
  • Maine Medical Center, Portland ME


  • The University of Texas, Houston TX
St. Mary's Health System • 93 Campus Avenue • Lewiston, ME 04240