Medicare's total benefits spending in FY2017 is projected at $709B, with about $100B covered by direct premiums. Administration for Medicare is budgeted at $9B, or just over 1%. Part A will be $202B, and Part B will be not much less, at $193B.
Enrollment grows slowly, at about +1.7% per year, with 58 million total beneficiaries. Of these, 49 million are age 65 and over, 9 million are disabled.
However, note that of these 58 million beneficiaries, 20 million will be in Medicare Advantage aka Medicare Part C. Part C has doubled in the last 10 years, from 10 to 20 million.
Part D comes in at about $110B, with average monthly premium of $41 (and deductible of $360).
Teeny Tiny Savings Ideas
Medicare projected that from 2021-2031, it would save $10B from new bundled post acute care, not much since Medicare payments would be at least some $7 or $10 trillion during those ten years (my own conservative guess). Similar, CMS projected that more use of telehealth in Medicare Advantage could save $160M over ten years, pretty tiny to the many trillions CMS spends every 10 years. For contrast, it looks like some LCDs on CYP testing carved $100M-plus out of the CMS molecular pathology budget between CY2014 and CY2015 - in just one year (here).
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From the HHS budget link provided, you can easily navigate back up into costs for other divisions of CMS or costs for other parts of HHS like FDA and NIH.
