Marie Weeks, MD

Radiation Oncologist

Marie Weeks, MD | Oncologist at Rocky Mountain Cancer Centers

Thornton Radiation

8820 Huron St.
Thornton, Colorado 80260


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8820 Huron St.
Thornton, Colorado 80260


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Thornton Breast Specialists

8820 Huron St.
Thornton, Colorado 80260


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About Marie Weeks, MD

Dr. Marie Weeks is a board-certified radiation oncologist. She uses cutting-edge technology to provide the highest level of radiation therapy for her patients. Dr. Weeks has a broad practice and treats patients with multiple cancers, including breast cancer, colorectal cancer, lung cancer, prostate cancer, and urological cancers. Her expertise also extends to metastatic brain and bone cancers. She collaborates with other cancer specialists, such as surgeons, medical oncologists, radiologists, and pathologists in weekly tumor boards, including breast and general conferences at Longmont United Hospital and the multi-disciplinary conference at Univ of CO Longs Peak Hospital. Dr. Weeks can assure her patients their cancer treatment has been decided by a multi-disciplinary team due to these tumor boards. She is committed to her patients and tailoring care to their specific needs. 

Board Certifications

Radiation Oncology


  • Breast Cancer
  • Gastrointestinal Cancers
  • General Radiation Oncology
    • 3D Conformal Radiotherapy
    • External Beam Radiotherapy
    • Image-Guided Radiation Therapy (IGRT)
    • Intensity-Modulated Radiation Therapy (IMRT)
    • Stereotactic Body Radio Therapy (SBRT)
    • Stereotactic Radiosurgery (SRS)
  • Genitourinary Cancers
    • Prostate Cancer
  • Head and Neck Cancer
  • Lung Cancer



Radiation Oncology, Huntsman Cancer Institute, Salt Lake City, UT

Radiation Oncology, University of Texas at San Antonio, TX

Medical School

University of North Carolina at Chapel Hill, Chapel Hill, NC

Patient Care Philosophy

I strive to provide compassionate care, maintain my patients’ dignity, and provide the most progressive treatments available. I educate patients and their loved ones about their radiation treatment options to empower each person to make the best decision for themselves.


Additional Information

American Board of Radiology
American Society of Therapeutic Radiology and Oncology
Colorado Medical Society
Radiosurgical Society