Why can't I use my Medicare "Part D" to pay the copay for my VA prescribed medications?

Maybe a VSO could help.

http://www.vetadvicates.org

That is an interesting point, one would logically think that VA benefits ought to be combinable with Medicare and/or Medicaid, certainly...I mean, God knows, no one ever listens to me, I'm just an insignificant little peon nothing nobody, however, to my mind, you do make an interesting, and, seemingly, quite logical point, as I'd said...some meds fall under Medicare Parts B or D, in our case, plus, we just got that new CHAMPVA OptumRx card for my wife, as wwll, so what you'd asked was, certainly quite thought provoking...the group I sent in the site for here, NOVA, is quite well hooked into a good deal, I'm not saying their guys could definitely answer this, however, I merely suggest it as a possible avenue to call, possibly their office directly, or use their search engine to find their guys by you...there are also law school vet law clinics you could seek out, though they done take eveeybidy, that's up to law school faculty supervising law students researching cases...another thought, you could call VA Off of Resolution Mgmt (ORM), and see if they have any ideas, also, try calling VBA and/or VHA directly...I'd also most definitely ask all three local ofc mil/cover staffs for all three of your Congress more as well, if the question involved Medicaid, ever, I'd also ask state legislators, as well as off staffs of governors, though I realize your question is a purely Federal one here, not a state one, per se...as I'd said, you do raise a quite interesting point, I'll try to give it more thought, if you've got any further thohghts, I'd be most eager to hear them, no rush...and, as mentioned below here, you could also certainly try the major vet groups...you could also call CMS directly, that supervises Medicare, and get their ombudsmen staff on the ohone, they do pick up, we've spoken with CMS staff many times, I assure you, or ask your Congress ofcs to get you a call back, as well, OK?

Pvt Anthony Baxter: The reason that Medicare and the VA will not pick up each other's tabs is that one federal agency cannot pay for another federal agency's bills. What issue you may be having will depend on what your "rating level" (not your disability rating) is within the VA. If the reason you went to the private doctor is because of a condition not covered by the VA, then Medicare should pick up the tab. If the VA does cover that condition, then you are to go through the VA. You may or may not be eligible for the VA Choice program but you should certainly look into that. Here's the VA link regarding the coverage. You may want to talk with an AARP representative who can give you further information regarding which coverage you will want to choose. My husband and I talked with an AARP representative who was able to help us navigate between the two systems.
https://www.va.gov/health-care/about-va-health-benefits/va-health-care-and-other-insurance/