Breton,
You need to check things out very carefully.
American Medical Degrees are NOT all recognised by the SA Medical Council.
If you are fortunate enough to have Valid Qualifications,you will still have to write an Exam,apart from Competency,it will also include SA Medica Law and After That,you will have to provide Community Service in a Government Facility that they decide the location of(which could be Johannesburg or anywhere else in SA) for one year at Government rates Of Pay Scale.
The relevant sections from the Act and The Health Councils websites are here.


(1) The Registrar may register a foreign qualified person in the category independent
practice in any of the professions registered under the Act and for which independent practice applies, if such a person has:-

(a) complied with the qualification requirements for registration referred to in regulation 2 (2);

(b) (i) registered in terms of regulation 2 (2) and completed a minimum period of five years service in the public service; or

(ii) in the case of South African foreign qualified citizens, performed
community service in terms of section 24A of the Act in respect of the
professions for which community service applies; and

(c) passed the relevant examination for registration in the category independent practice.

The Relevant section of the Health Act says:


Community service

24A. (1) Notwithstanding section 24, any person registering for the first time for a profession listed in the regulations in terms of this Act after the commencement of the Medical, Dental and Supplementary Health Service Professions Amendment Act, 1997, shall perform remunerated medical community service for a period of one year in terms of the regulations contemplated in subsection (2) and shall, on the completion of such service, be entitled to practice the profession in question.

(2) The Minister may, after consultation with the council, make regulations concerning the performance of the service contemplated in subsection (1), including but not limited to-

(i) the place or places at which it is to be performed;

(ii) the conditions of employment.
[S. 24A inserted by s. 22 of Act 89 of 1997.]