Louisiana

A physician can practice in any specialty without being board certified in that specialty, as long as they have completed the appropriate residency training. So if Abraham completed a family practice residency, then he can call himself a family medicine doctor even though he may not be board certified in family medicine. However, non-board certified docs usually only practice in underserved areas where it's harder to recruit physicians and specialists. Not sure what his practice situation was.

FWIW, the linked article also mentioned that he practiced for 10 years as a veterinarian before going to medical school.