Mr. Heller has been an active member of the New York Bar since 1969 and the California Bar since 1973. Mr. Heller has been admitted to practice before the U.S. Circuit Court of Appeals for the Ninth Circuit and the U.S. District Courts in the Eastern, Northern, Central and Southern Districts of California and the Southern District of New York. Mr. Heller has been admitted pro hoc vice in multiple U.S. District Courts throughout the United States and most recently have been admitted pro hoc vice in the the Eastern District of New York and the District of Massachusetts.

Representation of clients in appeals of criminal convictions to the Ninth Circuit Court of Appeals, Courts of Appeal and Supreme Court of California. Mr. Heller has had substantial appellate experience as both a federal prosecutor in representing the United States on appeals to the Ninth Circuit Court of Appeals and in his thirty plus years of private law practice and has prepared more than thirty appellate briefs and writs of mandate.