There would need to be onsite IR, but there's no good reason for IR an DR to remain the same specialty.
Because the big teleradiology corporations do not offer partnership tracks to their physicians (usually). You're just reading studies. Reimbursement is weird though so I don't have a full handle on how it works yet, but if it were a normal marketplace the answer would be obvious - competition between national companies to keep costs down and profits up.
They won't unless they really like it.
You seem primarily motivated by money. Radiology is probably not your best choice.
Whatever you say is what you've heard on some random forum. It is obvious that you are not a resident or practicing radiologist.
IMO, teleradiology will become less and less popular. First, what a DR does is more than film reading. Most clinicians want to know who is reading their studies. In most hospitals with telerad, clinicians are not happy.
With increasing volume of studies, sooner it will justify to have a radiologist on call to work the whole night. My current group was covered by teleradiology before, because it did not make sense to have one person on call to read 2 CTs the whole night. Now with increasing volume and some added studies from evening, we have a night shift that makes sense financially.
Currently we are in a transition era. The reason that non-partnership pays really low, is becuase the money goes to the partners. So if I work 5 bucks which is what medicare pays for a chest portable, I get paid 2 bucks because 3 bucks goes to the senior partner. The same for teleradiology, they pay 2 bucks because 3 bucks goes to telerad admin. Now if we go towards the employment model, which we are going, the partner will not exist anymore. Then if I make 5 bucks, I will be paid probably 4 bucks becuase one will go to the hospital. The senior partner will also get paid 4 bucks, which is much lower than his prior income which was 8 bucks ( 5 bucks for his work plus 3 bucks out of my work). The tele group also can not exist unless they pay me 4 bucks which is not justifiable for them.
Anyway, I myself see a much brighter future than what people say. The volume is going up and we are becoming more dependent on imaging. More and more high end studies are coming from primary care doctors. The income will drop Significantly for senior partners ( see above why) and some of it will go to new graduates. We will not see radiculously high incomes. More senior people will retire as a result and the jobs will open.
The main reason that the market is tight is not the volume. I can clearly see the need. For example my current group needs at least two more people, but we work our a.. Off, because the seniors want to make the most out of it before health care reform implemented.