I have been enrolled in the AARP UHC Medicare Advantage Plan (MAP) for the last 4 years and have been reasonably satisfied with it. But this year, I am considering a Supplemental plan instead (probably Plan G). As you all probably know, MAPs come bundled with dental, hearing, and vision insurance of some sort, but with a Supplement, you pretty much have to cobble this all together on your own. 

The AARP UHC Supplemental Plan G + Wellness, however, comes bundled with dental insurance, some vision coverage, and a gym membership. The premiums are a bit higher than the regular Plan G, but it might be worth it. I don't know yet.

Anyway, the sticky point is the dental insurance. I have an excellent dentist and I want to get dental insurance that has my dentist in-network. At one point, I thought I read that UHC dental insurance was through Delta Dental. I may be wrong about that. 

My dentist's web site says they accept many different insurance companies including Delta Dental and UnitedHealthcare. 

Here's my question: Does anyone have some knowledge, insights, or suggestions on how I can verify if my dentist is in-network for the AARP UHC Supplemental Plan G + Wellness dental coverage? Any help would be appreciated.

(And, PLEASE, don't reply to this post telling me how bad the UHC Supplement plans are and stuff like that. I just need help chasing down this dental insurance question. THANKS!)