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Radiation oncology and treatment planning

Medical Dosimetrists

Medical dosimetrists turn a radiation oncologist’s prescription into a detailed treatment plan that aims radiation at a tumor while protecting nearby healthy tissue. The work is unusually exacting: it blends computer planning, dose calculations, and close coordination with the care team, where small mistakes can matter a lot. Pay is strong, but the field is small and growth is only modest, so openings are limited.

Also known as DosimetristMedical DosimetristRadiation DosimetristRadiation Therapy DosimetristCertified Medical Dosimetrist
Median Salary
$138,110
Mean $141,420
U.S. Workforce
~4K
0.2K openings per year
10-Year Growth
+3.5%
4.8K to 4.9K
Entry Education
Bachelor's degree
+ None experience

What This Role Looks Like in Practice

Medical Dosimetrists sits in the Healthcare category. In practical terms, this role combines day-to-day execution, cross-team coordination, and consistent decision-making under real business constraints.

U.S. employment is currently about ~4K workers, with a median annual pay of $138,110 and roughly 0.2K openings each year. Based on BLS projections, total employment is expected to grow from 4.8 K in 2024 to 4.9K in 2034.

Most hiring paths start with Bachelor's degree, and employers typically expect none of related experience. Many careers in this track begin around Radiation Therapist and can progress toward Radiation Oncology Manager. High-value skills usually include Varian Eclipse Treatment Planning System, IMRT/VMAT Planning & Dose Optimization, and CT/MRI Fusion, Contouring & Localization Software, paired with soft skills such as Critical Thinking, Active Listening, and Reading Comprehension.

Core Responsibilities

A Day in the Life

01 Work with radiation oncologists and the rest of the care team to turn a treatment prescription into a plan that targets the cancer and protects nearby organs.
02 Use planning software to work out the right radiation dose and shape the beam so it hits the right area from the best angles.
03 Double-check dose calculations and other plan details before treatment starts so the plan matches the prescription.
04 Prepare reference images, markers, and other setup information so each treatment can be delivered in the same position.
05 Figure out which masks, molds, or other positioning devices should be used to keep the patient still and comfortable during treatment.
06 Review tricky cases with physicists and therapists, and sometimes help test new planning methods or equipment.

Industries That Hire

🏥
Hospitals and Health Systems
Mayo Clinic, Cleveland Clinic, Johns Hopkins Medicine
🎗️
Cancer Centers
Memorial Sloan Kettering Cancer Center, MD Anderson Cancer Center, City of Hope
🎓
Academic Medical Centers
Stanford Health Care, UCSF Health, Duke Health
🩺
Outpatient Radiation Oncology Clinics
GenesisCare, American Oncology Network, Texas Oncology
🖥️
Radiation Therapy Equipment and Software
Varian, Elekta, Accuray

Pros and Cons

Advantages
+ The pay is strong for a specialized healthcare role, with a mean annual wage of $141,420 and a median of $138,110.
+ You get to do precise, high-impact work that directly affects how safely and accurately cancer treatment is delivered.
+ The role is highly specialized, so workers with the right training can be hard to replace.
+ BLS says the occupation typically requires no work experience and no on-the-job training, which makes the path more straightforward once you have the education.
+ Demand is expected to grow, with employment projected to rise from 4.8 thousand to 4.9 thousand and about 200 annual openings.
Challenges
- The field is tiny, with only about 3,970 jobs, so openings are limited and can be competitive.
- Projected growth of 3.5% over 10 years is modest, so this is not a fast-expanding occupation.
- A lot of the job is screen-based planning and verification rather than direct patient contact, which can feel repetitive for people who want bedside work.
- The work has a narrow career ladder in many places, so moving up often means switching into management or another radiation oncology specialty.
- Because the plans are so precise, a small calculation or setup mistake can have real patient safety consequences, which adds pressure every day.

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