Dr. Mary M. O' Neil has been practicing medicine for 24 years. Dr. O' Neil graduated from the Saint Louis University School of Medicine in 1990. She practices medicine in Orchard Park, NY and specializes in Rheumatology. Dr. O' Neil is affiliated with Mercy Hospital Of Buffalo and Sisters Of Charity Hospital Saint Joseph Campus.
Years in Practice: 24 Years
Languages Spoken: English
Medical School: Saint Louis University School of Medicine
Graduation Date: 1990