If you think some of the equipment is 100k, x-ray 30k per plate. You also need a territory before you start. It is too easy for bigger practices to starve you out to just pile in 250k and hope for the best.
You have to join a small practice, crawl up through the ranks, getting paid next to nothing, somehow kill your colleagues before they make partner and then you might be in a position to jump ship stealing customers as you go or organize a coup take over the practice by joining with another bigger practice nearby and buying out the seniors.
If you had said lawyer now... I don't know maybe - but I got your american dream point.