"Doctor"(s) in a Hospital menu, what exactly they do ?

[Bael]

1. Are they like a handyman who can do every possible med job (but worse than the specialist) ?
2. do I NEED to choose "Doctor" at all if I already got all other med jobs covered by respective specialists ?
3. Also "Suturing" and "Dressing wounds" aren't mentioned in Hospital as available position. How do I tell those two to work in my hospital ?
4. Lastly about "Orderlies" and "Feed patients\prisoners" - are they the same ? Or do I need to checkmark both labors for my delivery dwarf team ?

[McFuzz]

1/2) Doctors, by my understanding, fulfil all the roles. They shouldn't do them 'worse', per say, they fulfil a job to their skill level. It is a role for jack of all trades though, as you say.

But your doctor might be a good diagnostician, good surgeon, and dabbling bone setter. And you might have a high master diagnostician, legendary bone setter. So, you put doctors that have lots of skills in the Doctor role, and then dwarves who have the best of each field in the specialized roles.

If you doctor is better than all your specialized guys in their fields, well, just leave 'em blank and he'll do all the doctoring.

3) Pretty sure suture is surgery. Not sure about dressing wounds, but probably.
4) I like to set all my doctors as the orderlies, and set them to only ever do that task. Makes them useless 99% of the time but extremely useful 1% of the time lol.

[chief10]

"Suturing" and "Dressing Wounds" don't have a real "skill" associated with it. Dwarves that have higher skill in these just do the job faster, but they don't do the job better. Therefore the skill level doesn't really matter that much. If you notice, these two jobs are in the default "Orderly" work detail.

[AlP]

There is no difference between the roles. You can even assign everyone as diagnostician, and they will still do all the tasks. Just make sure you allow the labors in their work details.

Maybe the designations let them prioritize work or something to that end, but they can still do everything.