At issue is how Sutter Health and its affiliate Palo Alto Medical Foundation diagnosed patients enrolled in Medicare Advantage, which covers about one-third of Medicare beneficiaries nationwide. The program is funded by the government but offers health plans through private insurers. https://www.benefitspro.com/2018/12/13/feds-join-suit-agains-sutter-health-over-inflated/?kw=Feds%20join%20suit%20agains%20Sutter%20Health%20over%20inflated%20Medicare%20payments&et=editorial&bu=BenefitsPRO&cn=20181213&src=EMC-Email&pt=HealthCareReformWatch