So you can see above the American Academy of Pediatrics have sent me a congratulations card saying that I can now use the FAAP designation along with (FAAPs care for kids) badge holder. They sent me that because I met two criteria; first I am an active AAP member and second because I just passed the ABP board exam. So now I can designate my name is Firas Salim, MD FAAP.
This is different from the ABP designation. The ABP (which is a different from the AAP) wants us to say Firas Salim, MD, ABP Board Certified in General Pediatrics. They specified that in a recent memorandum to all ABP certified pediatricians here is the link. However, in real practice, I did not see a pediatrician using that long designation after his/her name. Most folks just use the FAAP designation which implies that they are board certified.