Meet Our Team

12 Team Members
  • Alexandra Donovan, M.D.

    Alexandra Donovan, M.D.

    Alexandra works as both an Oncologist and Hematologist, providing specialized care to patients with a broad spectrum of cancers and blood disorder.

  • Lauren Kropp, MD

    Lauren Kropp, MD

    Radiation Oncologist

    Dr. Kropp is a board-certified radiation oncologist who focuses on utilizing advanced technologies while developing individualized treatment plans.

  • Our Infusion Team

    Our Infusion Team

    Care Specialists

    Whatever your cancer diagnosis, our team of biotherapy-certified nurses is here to provide the care you need, from chemotherapy to immunotherapy.

  • Stephen Mayer, M.D.

    Stephen Mayer, M.D.

    Medical Oncologist

    Board-certified in medical oncology, Dr. Stephen Mayer strives to help patients make informed decisions as they navigate through treatment options.

  • Peter Rossi, M.D.

    Peter Rossi, M.D.

    Radiation Oncologist

    Dr. Peter Rossi is a board-certified radiation oncologist who works closely with the cancer care team at Valley View to treat a variety of cancers.

  • Our Navigation Team

    Our Navigation Team

    Care Specialists

    Our navigation team consists of nurse navigators, a caring social worker, and a compassionate chaplain who help patients through their journey.

  • Integrated Therapies

    Integrated Therapies

    Care Specialists

    Our integrated therapies team consists of a compassionate group of professionals who are committed to providing patients with expert support.

  • Matthew L. Stinson, PA-C

    Matthew L. Stinson, PA-C

    Physician Assistant

    For over 15 years, Matt Stinson has been part of the Valley View team serving the Roaring Fork communities and beyond.

  • Kimberly Burns, NP

    Kimberly Burns, NP

    Nurse Practitioner

    As a cancer nurse practitioner with over ten years of experience, Kim is privileged to care for patients and their families.

  • Kristin Johnston, MSN APRN OCN

    Kristin Johnston, MSN APRN OCN

    Nurse Practitioner

    Kristin is a nurse practitioner at Calaway Young Cancer Center at Valley View with more than eight years of oncology-specific experience.

  • Paul Bunn, M.D.

    Paul Bunn, M.D.

    Medical Oncologist

    Dr. Paul Bunn is an experienced medical oncologist who is committed to helping patients of Calaway Young Cancer Center with expert, personalized care.

  • Kathy Hassell, M.D.

    Kathy Hassell, M.D.


    Board-certified hematologist, Dr. Kathy Hassell specializes in cancer treatments at Calaway Young while also teaching at the University of Colorado.