The phrase "are treated regardless" is correct and usable in written English.
It can be used in contexts where you want to emphasize that individuals or items are treated without consideration of certain factors or conditions.
Example: "All applicants are treated regardless of their previous experience or education level."
Alternatives: "are treated without exception" or "are treated without consideration".
Even some salaried academic physicians like Dr. Douglas A. Drossman, who runs a respected clinic where patients are treated regardless of ability to pay, often have to scramble for grants from foundations and industry to support their work with patients.
Tons of people come to the emergency department every day and are treated regardless [of whether they have coverage].
From an ethical point of view, this general intervention means that is that no children, such as the obese, are stigmatized, as all children are "treated", regardless their physical state.
The Comedy Central hour has been a liberal refuge, a satirical antidote to the idea that every issue has two sides that must be treated, regardless of their credibility, with something approaching equal respect.
Subjects identified as having iron deficiency were treated regardless of Hgb level.
Bell says that the problem of people not having insurance is unique to the U.S., and he chafes at it, a feeling he says goes back to his days as a doctor at Yale (where all people were treated regardless of need) but also to his childhood.
The Emergency Medical Treatment and Active Labor Act (EMTALA) legislation (here) requires that everyone be treated "regardless of ability to pay". Some may be successful in applying for Medicaid coverage retroactively, but that's a big unknown, and at least according to some, an unfair assumption.
#IAmANastyWomanBecause I treat everyone the way I want to be treated regardless of race, sex, religion, disability or age.
"Mr. Duncan was treated the way any other patient would have been treated, regardless of nationality or ability to pay for care.
Keep your personal karma clean by always treating the other person the way you'd like to be treated, regardless of the way they behave towards you.
A hospital spokesman responded: "Mr. Duncan was treated the way any other patient would have been treated, regardless of nationality or ability to pay for care.
