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Radiation Therapist – Full-Time (Click Here to Apply Online)

The Radiation Therapist is primarily responsible for administering prescribed doses of radiation to specific body parts, using radiation therapy equipment according to established practices and standards.


Core duties and responsibilities include the following. Other duties may be assigned.

  • Reviews and/or administers daily prescribed Radiation Therapy treatments to patients assigned to the treatment unit at a speed consistent with patient scheduling accurately and efficiently.
  • Positions patients for treatment with accuracy according to prescription.
  • Prepares room and constructs equipment for patients, such as immobilization, treatment, and protection devices.
  • Sets appropriate treatment unit parameters.
  • Activates the treatment unit and delivers the prescribed dose of radiation.
  • Maintains visual and/or audible communication with the patient during treatment.
  • Obtains appropriate imaging films on patients when prescribed; makes adjustments in field placement when needed.
  • Monitors patients throughout the course of Radiation Therapy for unusual reactions and events, and reports same to Clinical Director and Radiation Oncologist.
  • Keeps immobilization devices (vac-locs, rectal catheters) in a clean and orderly manner and utilizes the devices as prescribed by the Radiation Oncologist.
  • Maintains current knowledge of therapeutic procedures performed in the Radiation Oncology Department.
  • Maintains basic knowledge of Varian Linear Accelerator and maintains the unit with regard to daily QA and cleanliness.
  • Possesses basic knowledge of Radiation Oncology equipment function to provide for minor repair and troubleshooting for problems; water and gas levels, laser alignment, etc.
  • Educates, prepares, and reassures patients and their families by answering questions, providing physical assistance, and reinforcing physicians’ advice regarding treatment reactions and post-treatment care.
  • Applies safety principles in the performance of position responsibilities.
  • Captures Radiation Oncology charges as procedures are performed.
  • Contacts patients in the event of unexpected delays such as a down machine or bad weather conditions.
  • Reviews patient EMR for appropriate insurance authorizations for radiation treatments.
  • Maintains a neat and professional appearance.
  • Wears appropriate uniforms while on duty.
  • Keeps up with office schedules, insurance company requirements, and physician preferences.
  • Follows organizational policies, protocols, and guidelines.
  • Completes assigned duties in an effective, efficient, and timely manner, reporting for work on time, and adhering to policy concerning lunch breaks.
  • Makes every effort to keep the office running in a smooth and cost-effective manner while cooperating with other office departments.
  • Presents a courteous and helpful manner in dealing with patients, staff, and others with whom we do business.
  • Follows OSHA, CLIA, and HIPPA regulations and reports non-compliant or unsafe conditions.
  • Stays busy when patient load is low or when the clinic is finished, avoiding the distraction of other employees when they are working.
  • Keeps work station clean, neat, and free of unnecessary clutter.


To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.


  • High School diploma or General Educational Development (GED)
  • Great attention to detail and strong organizational skills
  • Excellent written and verbal communication skills
  • Ability to work well independently
  • Maintain confidentiality
  • Experience with Microsoft Office Suite (Outlook, Word)
  • Clerical and computer experience preferred, experience in medical setting a plus.
  • Experience managing operations (coordinating/scheduling patient visits)
  • Possess strong skills for multitasking, meeting competing deadlines, prioritizing, and supporting PIs for multiple projects
  • Keen attention to details
  • Adept at creative problem-solving
  • Positive attitude
  • Ability to adjust to consistent change, effectively and efficiently
  • ARRT Radiation Therapy Certification & Texas Medical Board License for Radiation Therapy


Associate’s degree (A.A.) or equivalent from a two-year college or technical school; or six months to one-year related experience and/or training; or equivalent combination of education and experience.


To perform this job successfully, an individual should have knowledge of: Internet Software; Spreadsheet Software (Excel); Word Processing Software (Word); Electronic Mail Software (Outlook), and ARIA Software.


  • Maintain registration in good standing with the American Registry of Radiologic Technologists in the field of Radiation Therapy and the Texas Department of State Health Services.
  • Meet all continuing education standards as they apply to Registry eligibility.


  • Proficient in the utilization of all Radiation Oncology equipment in the department


  • Ability to operate a Linear Accelerator with On Board Imaging, MV imaging and Cone Beam CT imaging in order to treat patients with radiation.
  • Ability to operate a CT scanner for the purpose of Radiation Treatment Planning.

San Antonio Cancer Center Team 2021Make a Positive Impact

At the San Antonio Cancer Center, we make a difference in the lives of our patients by using cutting-edge technology to treat cancer and provide hope. As a member of our team, you’ll be able to positively impact individuals in our San Antonio community and the surrounding areas.

Provide Advanced, Compassionate Care

Here at the San Antonio Cancer Center, we work together as a team – from our radiation oncologist to support staff – to provide advanced, compassionate care for each patient. We treat many types of cancer with external beam radiation (IMRT and SBRT), all while giving patients the personal attention they deserve.

Employee Benefits

The San Antonio Cancer Center has an excellent benefits program and a valuable compensation package. Full-time employee benefits include:

  • Competitive Compensation Package including
    • Bi-Annual Discretionary Bonuses
    • Performance-Driven Merit Increases
  • Medical, Dental, and Vision Insurance Plans
  • 401(k) Profit Sharing Plan with up to 4% Employer Matching and 5% Profit Sharing.
  • Paid Time Off
  • 7 Paid Holidays
  • Uniform Assistance
  • Tuition Assistance
  • Employee Assistance Program
  • Employee Recognition Program
  • Monday – Friday Work Schedules