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NMMC Behavioral Health Center Medical Staff


Dr. Marianne Barnes

Marianne Barnes, M.D., graduated from Notre Dame College in Cleveland, Ohio, and earned a master's degree from Fordham University in Bronx, N.Y. She received her medical training at Case Western Reserve University School of Medicine in Cleveland, Ohio. She completed her psychiatry internship and residency at University Hospitals of Cleveland in Ohio, where she also served as chief resident. She is board certified by the American Board of Psychiatry and Neurology with added qualifications in forensic psychiatry.

Sondra Bennett, PMHNP, received her associate's and bachelor's degrees in nursing from Mississippi University for Women in Columbus. She completed her master's degree at the University of Alabama-Birmingham, with a focus in psychiatric mental health nurse practitioner training.

Charlotte Green

Charlotte Green, RN, serves as consult liaison nurse for NMMC Behavioral Health. She is a certified psychiatric nurse practitioner. She completed her studies at the University of South Alabama, where she was invited into the school’s honor program in recognition of her academic excellence. Green has been employed at NMMC since 1996.




If you need health care after hours, please call North Mississippi Medical Center at (662) 377-3000. If it is an emergency, please call 911.


The North Mississippi Medical Center Behavioral Health Center is a place where families who are struggling can come to get help and hope.