I use Tricare Prime. Last year I went to my primary care NP at the Army Hospital and told her what I was doing. She gave me referrals for the endo and mental health. She also told me to move my prescriptions to the Army Pharmacy and to do my blood tests at the Army Hospital. This saves lots of money.
My endo doesn't take Tricare so I still have to pay for the appointment. But she gives me a blood test order each time that I carry to the Army Hospital. She also sends my prescriptions directly to the Army Pharmacy.
This has worked very well for me. Our hospital here is also excellent so there has been no issues at all.
If you are not near a Military Hospital your endo can send the prescriptions to the Tricare mail order place, or you can use any outside Pharmacy and pay the $10 copay. All you need is your Military ID.
Conform and be dull. —James Frank Dobie, The Voice of the Coyote