Will AI replace Physical Therapist Assistants?
Healthcare Support · O*NET 31-2021.00
Task exposure index for this occupation
Averaged across the week, this work sits at the low end of the exposure scale — most of it is not the kind current systems do well. O*NET breaks Physical Therapist Assistants into 26 distinct work activities. Weighted by how much of the week each one takes, 12% of the job sits at or above the threshold where current systems can do the task end to end. The single largest contributor is "Teach medical procedures or medical equipment use to patients", which scores 34 and takes roughly 12% of the week. That is the average for the job title. It is not a measurement of any particular person’s week, and the difference between the two is usually larger than the difference between job titles.
Model v1.2 · activity indices last updated 18 August 2026
What this occupation does
Assist physical therapists in providing physical therapy treatments and procedures. May, in accordance with state laws, assist in the development of treatment plans, carry out routine functions, document the progress of treatment, and modify specific treatments in accordance with patient status and within the scope of treatment plans established by a physical therapist. Generally requires formal training.
The most exposed parts of the job
Scored 0–100 on how completely a current system could perform the activity.
- Document client health or progress.95
About 3% of a typical week
- Prepare medical reports or documents.95
About 2% of a typical week
- Record patient medical histories.95
About 3% of a typical week
- Perform clerical work in medical settings.70
About 1% of a typical week
- Attend educational events to update medical knowledge.66
About 2% of a typical week
The least exposed parts
The same scale. These are the activities current systems handle worst.
- Clean patient rooms or patient treatment rooms.5
About 5% of a typical week
- Hold patients to ensure proper positioning or safety.12
About 6% of a typical week
- Move patients to or from treatment areas.14
About 3% of a typical week
- Prepare patient treatment areas for use.16
About 2% of a typical week
- Prepare medical instruments or equipment for use.16
About 2% of a typical week
How far off the rest is
Of those 26 activities, 4 can be performed by systems available today and 14 are outside what current approaches do at all. The remaining 8 sit in between — demonstrated in research or in narrow products, but not something you can hand over whole. We do not put dates on that middle group, because nobody can.
Compared with similar occupations
The nearest scoring roles in Healthcare Support.
- Physical Therapist Assistants (this page)34
- Psychiatric Aides33
- Nursing Assistants35
- Medical Equipment Preparers36
Why your own number is different
Two people with the title "Physical Therapist Assistants" can spend their weeks on almost entirely different parts of this list, and the parts they choose move the number far more than the title does. Who signs off when the work is wrong, whether the job needs you physically present, and how fast you have picked up the tools all change it again — and none of that is in an occupation average.
The assessment asks you to divide your own week across these activities and answer fourteen questions about the parts of the job an occupation average cannot see. It takes six to nine minutes.
Score my own roleFree to take. The full report is a paid subscription — the price and its terms are on the pricing section, before you start.
Questions
Will AI replace Physical Therapist Assistants?
We do not answer that, because nobody can. What is measurable is how much of the work is already doable by machine: for Physical Therapist Assistants, about 12% of a typical week, across 26 activities. The other 88% is not, and what happens to the job depends on things this index does not contain — cost, regulation, who carries the liability, and what the people doing it decide to do next.
What part of this job is most exposed?
"Document client health or progress" — it scores 95 out of 100 on task automatability and takes roughly 3% of the week.
What part is least exposed?
"Clean patient rooms or patient treatment rooms", at 5 out of 100. Work like that is where the hours you protect tend to be worth the most.
Where do these numbers come from?
The activity list and the time weights come from O*NET 30.3, the US Department of Labor's occupational database. The exposure score for each activity is ours, from a published model — the weights, the priors and the limitations are all on the methodology page. No language model is involved in the arithmetic.
Does this apply to my job?
Only roughly. This is the average for the title, and the number that matters is the one for the week you actually work. The assessment asks you to divide your own time across these activities and answer fourteen questions about accountability, the parts of the job that need you specifically, and how fast you have adapted. That produces a different number, and usually a more useful one.
The full model — the weights, the priors and what it cannot see — is on the methodology page.