Medical Oncology at St. Mary's: physicians

Steven M. Duffy, MD

Dr. Duffy attended Rochester Institute of Technology for his undergraduate degree. He received his medical degree from SUNY Upstate Medical University and completed both his internal medicine residency and hematology and medical oncology fellowship from SUNY Upstate Medical University. Dr. Duffy is board certified in hematology and medical oncology.

Susan W. Schaffer, DO

Dr. Schaffer attended the University of Richmond in Richmond, Virginia, for her undergraduate degree. She received her medical degree from the Philadelphia College of Osteopathic Medicine and completed her residency at the Medical Center of Delaware and oncology fellowship at the Medical College of Virginia. She was a consulting associate at Duke University Medical Center for five years and in private practice in Richmond for two years. Dr. Schaffer is board certified in internal medicine and medical oncology.

Mark Farmer, MD

Dr. Farmer attended Washington and Lee University for his undergraduate degree and the University of Virginia School of Law for his Juris Doctor degree. He received his medical degree from George Washington University School of Medicine and Health Sciences and completed his internal medicine residency from the University of Virginia Health System. In addition, Dr. Farmer completed a hematology and medical oncology fellowship from Virginia Commonwealth University, Medical College of Virginia Health System. Dr. Farmer is board-certified in internal medicine and medical oncology.

Hillary Locklair, NP

Our nurse practitioner, Hillary Locklair, received her Bachelor of Science in therapeutic recreation/psychology in 2001 from Virginia Commonwealth University and her Bachelor of Science in Nursing in 2005 from Virginia Commonwealth University School of Nursing where she worked as a RN in bone marrow transplant for six years. Ms. Locklair received her master's in nursing as a family nurse practitioner in 2012 from Virginia Commonwealth University School of Nursing. She is certified by and a member of the American Academy of Nurse Practitioners. In addition, Ms. Locklair belongs to the Oncology Nursing Society and the Virginia Council of Nurse Practitioners.

Megan Cannon, NP

Our nurse practitioner, Megan Cannon, received her Bachelor of Science in Nursing, Magna Cum Laude and Master of Science in Nursing from Virginia Commonwealth University School of Nursing. Megan is certified by the American Academy of Nurse Practitioners. In February 2006, Megan was inducted as a member of Sigma Theta Tau Honor Society. She began her nurse practitioner career in clinical research with VCU Massey Cancer Center. When not at work, she enjoys spending time with her husband and two young girls.

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