国内学医的，现已年过50，
-- That's OK, you have the experience many of us do not have.
想回学堂学财会，不知是否现实，
-- A big NO.
-- Not sure who told you this dumb idea.
想听听大家的看法和建议。谢谢。
-- Heath care is still a good industry to enter;
-- Health care need people have education and experience which you have and many of us do not have;
-- Many places need people to Analysi Health care data;
-- As long as you have a PC in home ( I assume you have one ), you can pick up database skill in couple of month;
-- 国内学医的 + Database Skill in USA = Good candidate for Health care data analyst job.
-- Yes, many people successfully did it, you can do the same.
