The problem is proprietary standards
There is actually a very good reason for a doctor not to use (the current version of) Microsoft Word: It doesn't have the ability to export in an open standard format.
Document formats that aren't open standards are subject to become unreadable in future. If the only thing that can read the file is a version of a proprietary program that is no longer legally available, and contains (inadvertent) hard limits that prevent it running on modern hardware (trivial example: BASIC program with a FOR-NEXT loop for timing, written on XT, uses integer variable limited to -32768..+32767, won't run on 80486 processor), you're what's known technically as shafted.
But Microsoft will never, unless forced by legislation, allow Word to export .odt files nor Excel to export .ods; because they know that the only thing keeping them in business in the first place is that none of their users have a real choice to go elsewhere.
An IT person with a brain is still cheaper than expensive proprietary licences and expensive unexplainable downtime. Staff training is a red herring. The keyboard layout is the same between Windows and Linux, and most people don't use Microsoft Office properly anyway (I've seen documents laid out using rows of spaces, and I've seen people adding numbers with a calculator to fill in spreadsheets).