← Risk register SOC 29-2036 · reviewed 2026-08-11

Medical Dosimetrists

3,410 US workers · median $147,470/yr · Healthcare

EXPOSED

The core of the job — building and optimizing radiation treatment plans on a TPS workstation — is exactly the target of knowledge-based planning, auto-contouring, and vendor auto-planning tools that already produce clinically usable plans in minutes for prostate, breast, and standard head-and-neck cases. What persists is plan evaluation under competing constraints (organ-at-risk tradeoffs in re-irradiation, unusual anatomy, brachytherapy and SBRT cases), second-check QA, and being the person in the room with the physicist and radiation oncologist when a plan is deviated from. The occupation isn't licensed at the state level in most places — CMD certification plus physician sign-off is the shield — so protection comes from institutional QA culture more than statute.

10-year outlook: By the mid-2030s expect fewer dosimetrists per linac with the remaining roles shifted toward plan auditing, complex-case planning, and physics-adjacent QA rather than hands-on optimization.

Score — 42/100 resistance

Five dimensions, 0–20 each, summed. Higher means more protected. The arithmetic is shown so you can check it: 8 + 7 + 9 + 6 + 12 = 42.

Task resistance 8/20

Mixed — a routine tier and a judgment tier. Beam angle selection, MLC segmentation, dose-volume optimization loops, and DVH review are all keystroke work inside Eclipse/RayStation/Monaco that vendor auto-planning and knowledge-based planning already reproduce for the standard prostate, whole-breast, and 3D palliative cases that fill most queues — the 8 reflects that the surviving irreducible work is narrower: fusing a re-irradiation case against prior dose, HDR applicator reconstruction, and catching a contour error the model propagated silently.

Embodiment 7/20

Some physical or field component. You are physically present for CT/MR sim on complex cases, in the vault for HDR applicator geometry and catheter reconstruction, and doing hands-on ion chamber/film measurements for patient-specific QA on some setups — but that is a fraction of a week otherwise spent seated at dual monitors, which is why this sits at 7 rather than up with therapists who position patients daily.

Liability shield 9/20

Certification preferred, not legally required. MDCB certification is the credential most employers require and Texas is nearly alone in licensing dosimetrists, so when a plan error reaches a patient the medical event report under 10 CFR 35.3045 lands on the authorized user physician and the medical physicist who signed the plan check — a 9 credits the real barrier that no hospital lets an uncertified person plan, without pretending you hold personal statutory liability.

Trust premium 6/20

Some relationship component. Patients almost never learn your name; the relationships that matter are internal ones — the oncologist who knows your judgment on cord tolerance, the physicist who trusts your second check — and those carry weight at a specific institution but are not the product being purchased, which caps this at 6.

Judgment & accountability 12/20

Meaningful discretion. Choosing which OAR constraint to break when the PTV abuts brainstem, deciding whether a 2 mm shift on a fused prior plan is acceptable cumulative dose, and flagging a plan you believe is unsafe are genuinely ambiguous calls you make first — the 12 rather than higher is because the physician's signature and the physics plan check both sit downstream of every decision you make.

Confidence: medium · reviewed 2026-08-11 · how scoring works

Tasks already automatable

What survives

Active moats: judgment, liability

How to future-proof this job

Escape hatches — adjacent fields with better verdicts

Computed from U.S. Dept. of Labor O*NET skill profiles: high overlap with what you already do, materially higher resistance score.

Orthodontists SAFE · 83/100 · you already have ~67% of the skill profile

Skills to close: Operations Analysis, Coordination, Equipment Selection, Monitoring

Nuclear Medicine Technologists SAFE · 67/100 · you already have ~52% of the skill profile

Skills to close: Equipment Maintenance, Operation and Control, Repairing, Equipment Selection

Field report — do you do this job?

Has AI actually changed your work?

Self-reported and unverified — a sentiment signal, not a survey. One response per person per occupation; you can change your answer.

From people who do this job

Nobody has filed one yet. If you do this work, you know things the rubric can't see.

What has actually changed in your work?

Concrete beats general: a tool that arrived, a task that moved, a headcount decision you watched happen. Don't include anything that identifies you or your employer if that would put you at risk.