Updated Story A bipartisan duo on the Senate Finance Committee is pushing legislation passed by a key House committee late last year that would require Medicare Advantage plans collect enrollee-level supplemental benefit data and share it with CMS, a move health care researchers say could allow for more standardized reporting without requiring a standardized benefit package. The Medicare Advantage Supplemental Benefits Transparency Act of 2023, which was introduced in January by Sens. Mark Warner (D-VA) and Marsha...