Anchorage: (907) 276-2400
Mat-Su Valley: (907) 745-2900
Gamma Knife: (907) 276-5555

Mat-Su Valley Team

Meet Our Team of Dedicated Experts

We believe that the best cancer care is coordinated care. That’s why we have gathered together a team of four highly trained, board certified medical professionals who will work together to plan and carry out your treatment. 

What you should know about treatment at VRTC:

  • Your treatments will be given by qualified physicians and staff.
  • We have the equipment you need to receive safe and up-to-date cancer treatment.
  • Our facility is accredited by the American College of Radiology (ACR)

Why should you have your treatments at an accredited facility?

We know a diagnosis of cancer is usually a life-changing experience for patients and their loved ones. As you seek treatment, you need to know that they are receiving safe and appropriate care. To achieve ACR accreditation, our facility’s personnel qualifications, equipment requirements quality assurance and quality control procedures have gone through a rigorous review process and have met specific qualifications. It’s important for patients to know that every aspect of the ACR accreditation process is overseen by board-certified, expert radiation oncologists and medical physicists. In fact, the ACR is a national professional organization serving more than 36,000 diagnostic/interventional radiologists, radiation oncologists, nuclear medicine physicians and medical physicists.

What does our ACR accreditation mean?

  • Our facility has voluntarily gone through a vigorous review process to ensure that we meet nationally accepted standards of care.
  • Our personnel are well qualified through education and certification to administer your radiation therapy treatments.
  • Our equipment is appropriate for the treatment you will receive, and our facility meets or exceeds quality assurance and safety guidelines
  •    You can rest assured that your treatment will be done at a facility that has met the highest level of quality and radiation safety.

Radiation Oncology Physician- Valley

John S. Yordy, M.D., Ph.D.

Dr. John S. Yordy, MD, PhD

Dr. Yordy is a graduate of the Medical Scientist Training Program at the Medical University of South Carolina, where he earned his M.D. and Ph.D. degrees. Following the completion of residency in Radiation Oncology at MD Anderson Cancer Center in Houston, Dr. Yordy joined the faculty at the University of Texas Southwestern Medical Center in Dallas, Texas, working as a physician scientist. He worked in the clinic as well as directed a translational research lab testing new drugs that could be combined with radiation therapy to make radiation treatments more effective.

Prior to medical and graduate school, Dr. Yordy was able to visit and experience many different parts of the world, as well as work in several interesting jobs.

"I traveled to Alaska three times before moving permanently to the Valley. I always wanted to live in Alaska and I am honored and feel fortunate to have joined Dr. Chung and Dr. Settle in delivering high-quality radiation therapy to anyone in need of this treatment. I look forward to a long-standing relationship with the community and treating patients with the highest level of care. From the time I was a child, I have always felt a calling to serve others. I am thrilled to be working in the Valley, continuing to follow my calling, and helping patients here that need radiation therapy." 


  • Board Certified in Radiation Oncology by the American Board of Radiology (ABR).
  • Member of the American Society for Therapeutic Radiology and Oncology (ASTRO), American Society of Clinical Oncology (ASCO), American College of Radiology (ACR), International Association for the Study of Lung Cancer (IASLC), and American Radium Society (ARS).

Medical Physicists and Dosimetry Staff

  • Bryan Jackson, MS, DABR- Chief Physicist
  • Noah Arvidson, MS, Medical Physicist
  • Anthony Mazza, MS, Medical Physicist
  • Kristie Holmes, BSRS, RT(R)(T), Medical Dosimetrist
  • Kara Charlick RT(T), MS, Medical Dosimetrist
  • Hai Tran, MS, Medical Dosimetrist

Radiation Therapists

  • Dan Rivera, RT(T)
  • Alysia Quinlan, RT(T)
  • Paul Frechette, RT(T)
  • Nancy Gray, RT (T)- Chief Radiation Therapist

Oncology Nursing and Dietary Staff

  • Carol Kinslow, RN
  • Ana Maldonado, CMA
  • Brisa Alegria, RD, LD- Valley and Anchorage Dietician

Patient Care Coordinator

  • Suzanne Willson
  • Mai Yee Thao - Supervisor

Practice Administrator

  • Kari Disbrow


Anchorage & Valley Radiation Therapy Centers

Phone: 907.276.2400
Toll-Free: 877.276.4655
Fax: 907.276.4888
Office Hours: Mon-Fri, 8am–5:30pm
[Map & Directions]

Phone: 907.745.2900
Toll-Free: 877.276.4655
Fax: 907.745.2999
Office Hours: Mon-Fri, 8am–5:00pm
[Map & Directions]