ISAAC FIALKOFF KOENIGSDORF AKA ISAAC FIALKOFF AKA ISAAC F. KOENIGSDORF. Pay close attention Crusaders! on March 21, 2021March 21, 2021 By integrity50 Let’s take a look at one of Isaac Fialkoffs “clients”. So, Isaac Fialkoff is the CPA for his “client” Core Competence Foundation/non-profit where he is the Principal Officer, too? Share this:TwitterFacebookMoreRedditTumblrPinterestTelegramWhatsAppLike this:Like Loading...