Nurse Practitioners

Kathryn Klein, DNP, FNP-C, AOCNP


Kathryn (Katy) is a board certified family nurse practitioner through the American Academy of Nurse Practitioners.  She fell in love with caring for oncology patients when she was a registered nurse in the oncology department at DePaul Hospital. She joined St. Louis Cancer Care in 2018 after becoming an advance practice provider. 

Katy received her Bachelor of Science in Nursing degree and her Doctorate of Nursing Practice degree at the University of Missouri-Columbia. She is a member of Oncology Nursing Society and obtained her Advanced Oncology Nurse Practitioner Certification in January 2020. 

Danielle Mathis MSN, APRN, FNP-BC

 Danielle Mathis is a broad certified family nurse practitioner certified through the American Nurses Credentialing Center. She received her ungraduated degree in Bachelors of Science in Nursing at Southern University of Edwardsville. She has worked in medical oncology since 2009 at Barnes Jewish Hospital. She found her passion early on working with oncology patients. From there, she was inspired to provide a higher level of care and decided to advance her career. She pursued her Masters of Science in Nursing degree at Saint Louis University specializing in Family Nursing Practice.  She joined Saint Louis Cancer Care in 2018 to further care for oncology patients in the community.


 2020 by St. Louis Cancer Care, L.L.P.