Heightened levels of mold were discovered in testing after years of an undsicovered leak iin ariconditioning ductwork. Does anyone recommend a NADCA certified company to remediate this problem ?

Ductwork to airconditioner on roof was defective. Leak causing damage in bathroom ceiling was misdiagnosed as roof problem for years.  Mold instpectors discovered very heightened levels of problematic molds. Extensive remediation is necessary by a NADCA cerified company. I am looking for recommendations. Thank you.