Yes if you paid them.
Medicare plan B payments are qualified as Self-employed medical insurance premiums and should be entered under Business instead of in the Social Security Benefits entry area. So go back and take it off your SSA-1099 entry.
As a self employed person, your medicare premiums qualify for the "Self-employed health insurance deduction" on line 16 of Schedule 1 (technically an adjustment to income).
You may not take a deduction (for medicare or other health insurance for you or your family) directly on Schedule C (business income and expenses). That is, it is still a personal deduction, not a business deduction. It cannot reduce you net profit for purposes of the Self Employment Tax.