There was psych resident who started one as PGY-III at CCF years ago.
The liability insurance is doable and cheap.
The business plan you envision is doable.
Many insurance won't panel a none BC/BE doc. Which is scat, considering ARNPs and PAs are running around. I'll skip that soap box today.
The issues are, suboxone X numbers are expanded and now also allowed for ARNP and PAs. Plus there is some talk of simply dropping the X number altogether. Most of the suboxone population is Medicaid. There are now in places in the country enough options to get care and be in network. In other words the cash suboxone market dried up several years. Cash suboxone will now only be the higher end place where money individuals want more privacy and not shuttled through in herd like fashion. They will also want the addiction psychiatry or addiction medicine board certified doc to pay the cash to.