Medicare Supplement Plan G is among the highest-rated and most popular Medicare Supplement plans. Whether you are new to Medicare or looking for a policy to fit your budget or healthcare needs better, Medicare Supplement Plan G may be the right fit. Medicare Supplement Plan G covers 100% of your costs after the Medicare Part B deductible., Humana Medicare Supplement Plan G premiums can vary by age, gender, location and when you apply for a policy. You cam find out how much you can expect to pay for Humana Plan G by speaking with licensed insurance agent who sells Humana Plan G in your area. Humana Medicare Supplement Plan F vs. Plan G. The Medicare Supplement plan that offers the , , , , .