Can physician self sponsor h1b

NO, absolutely not. An H-1B worker can not work for them self ... nor hide behind a 'corporate veil'. Sorry.

No one can self sponsor H1B. Those times have come and gone.

You cannot. USCIS talked about H-1 for entrepreneurs, released some information, but never implemented/developed the rules. So answer is know. There are some limited scenarios, where if there is a legit employer, with employer-employee relationship, that your part ownership might not be an issue. But there has to be a valid employer-employee relationship, and the new set of Form I-129 now specifically ask the question about ownership interest. Talk with an attorney.