Calaway Young Cancer Center - Providers

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Dr. Bunn 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.

Dr. Hassel Kathy Hassel, M.D.

Kathy Hassel, M.D.


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

Dr. Marcus David Marcus, M.D.

David Marcus, M.D.

Radiation Oncologist

Dr. David Marcus is a board-certified radiation oncologist who specializes in radiation therapy at the Calaway Young Cancer Center in Colorado.

Dr. Stephen Mayer 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.

Dr. Rossi 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.

Matthew Stinson 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 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.

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