This appears to happen over ~5 years or more - so that's $2.7B vs $22.5T or about 0.012% of total spending.
The reason healthcare is broken in the US is not because of fraud.
It's due to the design.
By the way, fraud is inevitable.
We might be able to save about ~1% per year on healthcare if fraud was reduced to more reasonable levels. That's not going to move the needle at all.