Healthcare marketplace for supplemental insurance?

Ahmi, I don't know much about supplemental insurance. After researching, we went with a Medigap Plan; it covered the 20% Medicare didn't cover and worked out well for us. It doesn't cover meds, but neither of us needed that. I got Dad an AARP Delta Dental Plan after also researching comparable plans. It wasn't the best. but it was better than nothing.

This is a major project; spend some time doing research. I used spreadsheets to compare plans when I was first shopping.

If helps to factor out the most important considerations, the needs that need to be consistently and more frequently addressed, then compare plans to see which offers the best for those high priority needs.

Good question. I don’t know the answer so please share it with us when you find out.
I imagine you can go to your state’s exchange website and try to get answerss there.  
As stated above I would begin to research Medicare supplement insurance plans as well. I was helping a friend who recently went on SSDI and needs to choose a supplement and we went to the Medicare.gov site, placed her zip code in the search box which then provided info on what supplemental plans were in her area.
Before you sign up for a plan carefully review the wording on what is covered. A lot of people choose a Medigap policy to cover the 20% but I have heard these plans have  high deductibles & copays and limit where one can go for treatment. The Medicare part B monthly payment is paid directly to the supplemental insurance provider. 
I can be wrong though and will be curious to read the answers here. It’s complicated!
Good luck! Kudos for thinking ahead. 

Thanks for the help! Of course every company has the best policy and I get a headache thinking of doing research for my own coverage. My premiums are basically wasted because I have no real health issues, but the “just in case” factor can be scary!

Shane, good questions. Since I've had Medigap C for years, perhaps I can offer some insight.

We qualified for a lower income subsidy through a grant (I don't remember all the details now). For years my monthly premium was about $183; my father's was less than $125. The grant expired, my premium became a bit less than $185; Dad's shot up to almost $300.

I used to wonder sometimes how worth it this extra cost was, until Dad experienced so much need for medical care, and I had an emergency appendectomy and a stroke a few years later. All the premiums we paid were more than worthwhile as I reflect on the astronomical costs of so much care for Dad over the last several years.

My hospitalizations cost would have bankrupted me.

We were never limited for treatment sources, but I had planned years ago to use doctors and services that were within the same hospital system. And there were definitely hospitals I boycotted. I never felt our options were limited.

The only out of pocket costs for were protective foot gear for me for foot injuries, support stockings, foot creams, dental (which Dad got through the VA) and eyeglasses, and similar items. I don't think any of them amount to more than a few hundred dollars for Dad and much less for me.

You wrote: "The Medicare part B monthly payment is paid directly to the supplemental insurance provider."

Unfortunately, this is one of those days when part of my brain is still recovering from the heat and is not completely functional. For the life of me, I can't figure this out. Medigap C premiums were billed directly by the provider, which also covered Part B if I remember correctly. What I do remember is never paying anything other than the Medigap premiums, and the occasional out of pocket costs.

I could go through the old statements and see how Medicare and BCBSM may have noted the Part B premiums, but we never paid anything directly for that. I do have just a vague recollection of seeing notes on the Medicare EOBs that the deductibles had been met - there might have been some notes on the Part B costs as well - I just don't remember at this point. I spent more time scrutinizing the actual costs as I had over the years found some to be false and had to follow up to get the cheaters caught.

Thanks GA. I’ve heard some folks are quite restricted In their choice of providers with some Medigap HMO/PPO plans as well as high deductibles. It does depend on the plan one chooses. I guess there are Cadillac Medigap plans as well.

Shane, I think the restrictions are fairly standard with the HMO plans. If I recall, I did research them and eliminated that option fairly quickly as I didn't want to be limited to those physicians in an HMO. I'm honestly not sure what a Medigap HMO plan is; I researched the various Medigap plans and chose plan C as it was closest to what we wanted.

Ahmijoy: Original Medicare includes Part A & Part B. The Medicare Supplement (Part C) is purchased separately through, for example, AARP or commercial health insurance companies. As far as medications, you have to apply and purchase Part D to get drug coverage. Visit the Medicare.gov website for information.