I work in the industry and in general you see high margin (50-75%+) in areas like outpatient surgery centers, senior primary care ACO groups (ie providers getting paid by CMS to fully manage Medicare Advantage patients), etc.
PBMs and health plans generally have lower margins (in the 5-15% range), dictated largely by state and federal MLR regulations.
Watch who the large medical insurers are buying and you will get a good feel where there is margin to be had. They can use this to generate cash flow for other activities, drive savings within their insurance book, offer more competitive group pricing to their clients(ie employers, state govts, etc),drive affordability directly to consumers or some combo based on what business goals they need to hit that quarter.