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Marianne Davies, NP, DNP, MSN, BSN

Thoracic Oncology, Melanoma and Onco-Dermatology


Marianne Davies, DNP, ACNP, APRN, FAAN, cares for thoracic and melanoma medical oncology patients. She manages patients receiving advanced therapies, treating disease and treatment related symptoms and side effects to maximize their quality of life and clinical outcomes.

Davies says she chose to become a medical oncology nurse practitioner because it provided an opportunity to care for patients from diagnosis through the trajectory of their illness. “It provided an opportunity to build meaningful and impactful relationships, not only with patients, but also with their families,” she says. “It is not only care of the acute and chronic medical conditions, but also identifying and managing the emotional and psychosocial impact of the diagnosis on the patient’s quality of life.”

Davies, who has been involved in cancer care at Yale since 1983, is also an associate professor at the Yale School of Nursing. She says that she sees oncology care advancing at an accelerated rate, which translates into hope for more patients. New treatments and therapeutics are being developed, and personalized medical advances are providing the opportunity to tailor treatment and supportive care to each patient. “It’s exciting to participate in advancing care that is maximizing clinical outcomes for patients,” she says.



  • Lecturer

Education & Training

  • DNP
    MGH Institute of Health Professions, Doctorate of Nursing Practice: Leadership & Education (2014)
  • MSc
    Yale University School of Nursing, Post Masters: Acute Care Nurse Practitioner (2000)
  • MSN
    Yale University School of Nursing, Oncology Clinical Nurse Specialist (1987)
  • BSN
    Russell-Sage College, Nursing (1983)

Additional Information