Both news stories sound very sad. The first about cosmetic surgery going wrong in the DR you seem to hear about often.
That's because a large percentage of "cosmetic surgeons" are not authorized to do the cosmetic procedures they do (in many cases any type of surgery since quite a few are not even doctors) and aren't listed in the Colegio Dominicano de Cirujanos and in the Sociedad Dominicana de Cirugía Plástica, Reconstructiva y Estética. Professionals allowed to practice a particular profession are members of their corresponding colegio. There is no way around that.
In some cases a person may have real degrees from universities abroad. While they are the professionals they claim, they are not listed in the corresponding "colegio" due to whatever (negligence on their part, they were listed and let the membership expire, they didn't pass the exam some colegios tests before accepting anyone as a member, etc) and by law are not allowed to practice the profession in the DR. In that case, it's one of a technicality, but in most cases they never studied that or anything at all.
This also limits how you can call youself. Someone with law degrees but not listed can call themselves a "lawyer by profession" which means you studied and have degrees in law, but you are not practicing the profession. That same person can't call themselves simply a "lawyer" (imply that they are practicing the profession) until they are members of the Colegio de Abogados de la República Dominicana.
When it comes to Dominican plastic surgeons listed in the respective professional bodies mentioned in the first paragraph, they have a very low rate of problems due to surgery.