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Medical Physicist Assistant I

Medical College of Wisconsin · Milwaukee, WI · Full time

Posted Jan 19, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a time your attention to detail caught a mistake that others had missed.

What they are checking: Whether they have a real habit of checking carefully, which matters when a small error can harm a patient.

Tell me about a research project or presentation you've done. What was your part and what did you learn?

What they are checking: Whether they can contribute to the scientific publishing and presentation work this role expects.

You'll help teach dosimetrists, therapists and residents. How would you explain a basic physics concept to someone without a physics background?

What they are checking: Whether they can make technical ideas understandable to the different learners this section supports.

What would you do

You run a routine QA check and the output is just outside tolerance before the first patient of the day. What do you do?

What they are checking: Whether they will stop and escalate to the physicist rather than rationalize a small miss to keep the schedule.

You'll be finishing a medical physics certificate program while working clinically. How will you balance coursework with clinical duties?

What they are checking: Whether they have a realistic plan for heavy study alongside a clinical job with fixed machine time.

How would you explain a QA issue to a radiation therapist who is eager to start treating patients on time?

What they are checking: Whether they can communicate safety concerns clearly to clinical staff without being dismissive or alarmist.

About the work

Walk me through what acceptance testing and commissioning involve for a new linear accelerator, and where an assistant fits in.

What they are checking: Whether they understand why a machine must be proven safe and characterized before it treats any patient.

What daily, monthly and annual QA checks would you expect on a radiation oncology delivery device, and why do the intervals differ?

What they are checking: Whether they know the logic behind QA frequency, not just a memorized checklist from a guidance document.

How would you approach a second check of a patient-specific treatment plan? What are you looking for?

What they are checking: Whether they can spot plan errors like wrong prescription, normalization or dose to organs at risk before treatment.

What is in vivo dosimetry, and what might cause a measured dose to differ from the planned dose?

What they are checking: Whether they can reason through setup, detector and calibration sources of error instead of assuming the plan is wrong.

The program maintains records for APEx accreditation. Why does documentation matter so much in this field?

What they are checking: Whether they see records as proof of safe practice that surveyors and regulators will actually inspect.

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The full job description

As published by Medical College of Wisconsin.

Summary As a Medical Physicist Assistant I, you will, under the supervision of Chief Medical Physicist, provide services to the Medical Physics Section in accordance with the highest standards of practice and as required by regulatory and accrediting agencies while completing medical physics certificate program. Primary Responsibilities • Assist with acceptance, commissioning, routine quality assurance, and post-service clinical verification of new and existing radiation oncology imaging and delivery devices. • Assist with patient specific treatment plan evaluation and in vivo dose evaluation. • Assist with maintenance of equipment and treatment records required for APEx accreditation. • Participate in cutting edge medical physics clinical activities, including the preparation, publishing, and presentation of scientific findings. • Participate in ongoing educational activities for radiation therapists, medical dosimetrists, radiation oncology physics residents, and radiation oncology medical residents. • Complete requirements of medical physics certificate program • Perform other duties assigned by the Department Administration or Chief Medical Physicist Knowledge Skills Abilities • Strong critical thinking, problem solving and attention to detail required. • Excellent oral and written communication skills are essential. • Must demonstrate accuracy and situational awareness. • Ability to closely follow established procedures required. • Proficiency in computer programming (Python, Java, C++) preferred. Qualifications Minimum Required Education: PhD in Medical Physics or similar scientific field (Physics, Engineering, etc.) Minimum Required Experience: 0 years/none Physical Requirements Work requires occasionally lifting moderate weight materials, standing, or walking continuously. Work Environment Occasional exposure to dust, noise, temperature changes, or contact with water or other liquids. Work is performed in an environmentally controlled environment. Sensory Acuity Ability to detect and translate speech or other communication required. May occasionally require the ability to distinguish colors and perceive relative distances between objects. Why MCW? • Outstanding Healthcare Coverage, including but not limited to Health, Vision, and Dental. Along with Flexible Spending options • 403B Retirement Package • Competitive Vacation and Paid Holidays offered • Tuition Reimbursement • Paid Parental Leave • Employee & Family Assistance Program (EFAP) • Pet Insurance • On campus Fitness Facility, offering onsite classes • Additional discounted rates on items such as: Select cell phone plans, local fitness facilities, Milwaukee recreation and entertainment etc. For a brief overview of our benefits see: Benefits Overview For a full list of positions see: MCW Careers At MCW all of our endeavors, from our internal operations to our interactions with our partners, are driven by our shared organizational values: Caring – Collaborative – Curiosity – Inclusive – Integrity – Respect. We are committed to fostering an inclusive environment that values diversity in backgrounds, experiences, and perspectives through merit-based processes and in alignment with all applicable laws. We believe that embracing human differences is critical to realize our vision of a healthier world, and we recognize that a healthy and thriving community starts from within. Our values define who we are, what we stand for and how we conduct ourselves at MCW. If you believe in embracing individuality and working together according to these principles to improve health for all, then MCW is the place for you. For more information, please visit our institutional website . MCW as an Equal Opportunity Employer and Commitment to Non-Discrimination: The Medical College of Wisconsin (MCW) is an Equal Opportunity Employer. We are committed to fostering an inclusive community of outstanding faculty, staff, and students, as well as ensuring equal educational opportunity, employment, and access to services, programs, and activities, without regard to an individual's race, color, national origin, religion, age, disability, sex, gender identity/expression, sexual orientation, marital status, pregnancy, predisposing genetic characteristic, or military status. Employees, students, applicants or other members of the MCW community (including but not limited to vendors, visitors, and guests) may not be subjected to harassment that is prohibited by law or treated adversely or retaliated against based upon a protected characteristic.

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