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Cancer Treatment Centers of America

Mary Parker Davis, MS, RD, LD

Clinical Oncology Dietitian

CTCA Atlanta

"A solid support network can alleviate many of the stresses that arise during cancer treatment. Good nutrition is an essential part of that network."

- Mary Parker Davis, MS, RD, LD


  • MS, Nutrition – Georgia State University, Atlanta
  • BS, Dietetics & Consumer Foods – University of Georgia, Athens


  • Registered & Licensed Dietitian
  • Certification in Adult Weight Management, Commission on Dietetic Registration

Practicing since: 2014

Mary Parker Davis, Clinical Oncology Dietitian at Cancer Treatment Centers of America® (CTCA) embraces the Mother Standard of Care® upheld by CTCA®, which means she treats patients as if they were her own family members.

Davis, who joined CTCA in December 2014, works with patients to address their nutritional needs and to provide dietetic support to help reduce inflammation, ensure proper calorie intake and establish healthy lifestyle habits. “Nutrition is key during all stages of cancer treatment,” she says.

Davis educates patients about the relationship between health and disease, and she offers recommendations to help patients meet their lifestyle goals. “I enjoy making a positive impact on our patients’ lives,” she says.

While at CTCA, Davis worked to develop the nutrition component to the Advanced Surgical Recovery (ASURE) program.  She aided in developing the collaborative approach to surgical healing and patient preparedness for surgery, which aims to decrease patients’ risk of post-surgical nutrition complications.

Davis earned her Bachelor of Science in Family and Consumer Sciences at the University of Georgia, completing her program with degrees in both Dietetics and Consumer Foods. She went on to earn her Master of Science in Nutrition at Georgia State University.

In 2016, she completed the certificate course in adult weight management through the Commission on Dietetic Registration.

Davis’s training included rotations at several health care facilities. At a pediatric clinic in Atlanta, she assessed nutrition, diagnosed problems and developed interventions for children with diabetes and weight management issues. She provided similar care at a diabetes outpatient clinic and a dialysis center. Davis also provided clinical nutrition care at a large regional hospital, where she diagnosed patients, suggested interventions, and counseled patients on the role of nutrition in treating kidney disease, heart disease and cancer.

Outside of CTCA, Davis remains dedicated to her passion for food as part of healthy living. She loves cooking and trying out new restaurants in Atlanta.

Patient ratings and comments

Star ratings and comments are only available for medical, radiation and gynecologic oncologists. Gynecologic surgical offerings are not included at this time due to a different survey tool required to evaluate these services. CTCA uses a validated Press Ganey® survey, which captures patient experience feedback for the primary oncology services of chemotherapy and radiation therapy. Following industry best practice, star ratings and comments are only published for physicians with a minimum of 30 completed patient surveys.

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