Medicare Supplement cost and enrollment for Illinois.
A Medicare Supplement (Medigap) Plan G in Illinois typically runs around $142 per month, varying by age, insurer and the rating method your state uses.
Because Medigap is standardized, every Plan G covers the same benefits — only price and the insurer differ. Compare an estimate by age in the Medigap cost calculator and see what each plan covers.
Your 6-month Medigap Open Enrollment (starting when Part B begins) is the one window with no health questions — find it with the open enrollment calculator. Also weigh Medigap vs Advantage.