I did not do a fellowship, but I did get the basic PTEE certification last year. I do TEE on all my cardiac patients, but don't bill or produce a report. 95% of the time, this is enough. occasionally (usually post-bypass mitral valve repair eval) the surgeon wants another set of eyes and we'll call in a cardiologist. This makes sense to me. I feel comfortable and confident in my TEE skills for most stuff, but I am not as good as a CV trained anesthesioloigst or a cardiologist. Why not get the best trained person to evaluate a critical situation? I work at a community hospital that does about 300 hearts a year (among 18 anesthesiolgists), so we're unlikely to attract a CV trained guy, and none of us individually does enough hearts to really stay excellent at TEE. Despite the relatively small number of hearts, we do redos, multiple valves, VADs, aortic arch repairs/replacements, TAAAs and other relatively complex cases which really benefit from TEE. So having cardiologists to back us up is nice and overall is good for patients (ego aside).