It is not.
MD/MPH you must apply to as an incoming student (it's not something you can tack on after you matriculate), and that programs tuition is the cost of OOS tuition, regardless if you are a FL resident or OOS resident.
The MD/JD program is basically med school, with a break during which you attend law school, and as I understand it is the full rate of tuition for both MD and the JD components.
I am not sure about the MBA program, but you might but I am skeptical that it's a mere $20K more, unless that student was an MD/MBA student themselves. You may want to follow up with the office of admissions at the UM Business School to ask. Alternatively, financial aid office for either UM Med or UM biz can help you with this one. Not sure the office of MD admissions is the best jumping off point for this one though (they'd likely forward you to these other offices)