The Denver Radiation Oncology Treatment Team

Radiation Oncologists

Our radiation oncologists are a specially trained oncology physicians who use the therapeutic properties of radiation to treat cancer using very advanced technologies. Dr. Dorn and Chung custom develops every patient's treatment plan while ensuring minimizing radiation exposure to healthy tissue surrounding a tumor.

Nurse Practitioner

The NP assists the radiation oncologist in helping patients understand their care program and is available for questions all throughout treatment.

Christine Merritt MSN, RN, OCN, FNP-BC

Medical Radiation Physicist

The medical radiation physicist assists the radiation oncologist to design complex treatment plans.


The dosimetrist helps the radiation oncologist craft the treatment plan, calculating the appropriate dose of radiation using a sophisticated software program.

Medical radiation physicist Dave Herron, PhD and Dosimetrist Kirsten Hart, CMD, RT(R)


Radiation Therapist

The radiation therapist is primarily responsible for maintaining and operating the treatment machines and administering your scheduled treatments.

Kirsten Hart, CMD, RT(R), dosimetrist; Lori Hollenkamp, RT(R), radiation therapist; Alyssa Young, RT(R)(T), lead radiation therapist and manager; Alisa Vance, RT(R)(T), radiation therapist

Radiation Oncology Reception

Radiation Oncology Reception

April Duggan

Oncology Nurse Navigator

This specially trained nurse can answer questions, provide information about treatment, monitor your health during treatment and help you manage side effects. Meet our navigators>>