I'm curious if you've ever worked in an ACT model. Many of you clearly have not, and I know a number of you work in MD-only practices, which if you've read my posts over the years, I've always supported. But as MMan indicates, he works in the real world - as do I - and it's physically impossible for every patient to have an anesthesiologist personally perform their anesthetic. With the exception of small 1-2 person shops covering AMCs, I'm not aware of ANY MD-only practices in my state, and best I can tell, they're relatively rare in the Southeast.
Like it or not, the ACT is or can be a good solution to the problem of limited numbers of anesthesiologists. With medical direction, an anesthesiologist is personally involved with every single patient. I think my large practice does it well - 1:1 to 1:4, all day, every day, depending on patient acuity. We are 3:1 CAA to CRNA, so the mindset with our anesthetists is always medical direction anyway. We don't tolerate deviation from our practice model by any of our anesthetists, and expectations are made clear well before they start working for us. That type of work ethic comes from the docs (who do not sit in the office for hours on end - they're too busy). Our docs do all the regional, all the blocks. We follow the TEFRA requirements - period. We are currently an AMC-owned practice, but have never been pushed, coerced, or mandated to change from our medically directed way of doing things. Contrary to opinions in the ivory tower, it is quite possible to do 1:4 medical direction and do so safely. Most of the practices in our area function pretty similarly, and we have world-class private as well as academic hospitals with sterling reputations that run strictly as medically directed practices and have for decades.
There are certainly bad ACT practices out in the real world as well. "Supervision" is in name only when you're 1:10 or even worse. I know plenty of practices, including several that are pretty good sized, where the docs are nowhere to be found at nights or on weekends (and often never in OB). Those hours are totally abdicated to the CRNAs (never CAAs since we don't work in those types of practices).
Is a medically-directed ACT perfect? I guess not if you feel anything less than MD-only is the gold standard - but it is most definitely how the real world operates.