Joe Luis Lerma appeals his jury conviction for Medicare and Medicaid fraud. He argues that the district court abused its discretion in denying his motion for mistrial following the testimony of Jennifer Allen, which, he contends, gave the jury the impression that he had committed crimes or bad acts not alleged in the indictment.

Lerma is entitled to a new trial “only [if], after a review of the entire record, it appears that there is a significant possibility that the prejudicial evidence had a substantial impact on the jury verdict.” United States v. Lucas, 516 F.3d 316, 345 (5th Cir. 2008), petition for cert. filed, (June 2, 2008) (No. 07-1512). The prejudicial effect of Allen’s testimony was rendered harmless by the district court’s curative jury instructions; Lerma’s lack of credibility, as evidenced by his own contradictory *22 testimony; and the overwhelming evidence of his guilt. The denial of Lerma’s motion for mistrial was therefore not an abuse of discretion. See id.

AFFIRMED.