As of a couple years ago, annual salary for a mid-career military anesthesiologist on a retention bonus contract (i.e. voluntary extension AFTER your "scholarship" obligation was paid back) was in the neighborhood of $250-275K, depending on zip code. Less if not on such a retention contract. Joining with an accession bonus incurs a service obligation that generally makes one ineligible for a retention contract.
Without knowing more specifics about this particular program, I'd guess it might have been an OK deal 10 years ago. In today's market, it sounds like a very poor financial deal.