This document is a letter submitted in response to a proposed rule from the Centers for Medicare & Medicaid Services regarding Medicare coverage of innovative medical devices designated as breakthrough by the FDA. The letter applauds the proposed rule, which would provide national Medicare coverage starting on the date of FDA market authorization for 4 years. This would help start-up medical device companies commercialize their products after FDA approval and avoid the "Valley of Death" period between approval and reimbursement when patients may go untreated and companies may fail financially. The letter urges CMS to finalize and implement the proposed rule, arguing it would benefit both patients and the medical device industry. It is signed by current and former executives, investors, and advisors in start-up medical