The Part D reforms from this year cap insulin costs at [1] $35 a month. You can setup your social security benefit to have it automatically deducted
The premiums for part D in Washington State are about $40 a month [2]
Most Medicaid recipients don't pay out of pocket for insulin.
[1] https://www.medicare.gov/coverage/insulin [2] https://www.insurance.wa.gov/what-does-medicare-prescription... [3] https://www.commonwealthfund.org/publications/issue-briefs/2...