Mary Lou O' Neill, M.D.

Mary Lou O Neill, M.D.

Patient Testimonials

Specializing In

  • Colorectal Surgery

Dr. O’Neill graduated cum laude from Williams College and then completed medical school and a surgical residency at the University of Rochester. Her Colon and Rectal Surgery fellowship was completed at the University of Toronto in 1997 after which she joined RCRS. Dr. O’Neill grew up in Albany and now resides in Hilton.


COVID-19 Update:  Click here to learn more.

COVID-19 Update

During this challenging time, we want to send out a reminder that we are here for YOU! Please contact us at (585) 222-6566 for any concerns or issues. We are taking all safety precautions in office, including requiring face covering, but we are still seeing patients.

Note: Not all offices are operational, so please contact us before coming in. We hope to be fully functioning very soon!