Unfortunately, in the Coast Guard, there is quite a bad of bad information being passed along by well-intentioned individuals who are not part of the CGPC-adm-1 chain fo command and have not been trained in such matters.
For those from other services, the Coast Guard does not currently have a cadre of trained PEBLOs to provide information and materials to personnel who are begin placed on the PDRL, TDRL or medically separated.
However, when you were placed on the TDRL, it is customary for CGPC-adm-1 to send out an information packet regarding these matters. This package would make it clear what your options would be regarding the various Tricare plans, etc.
I am afraid that you were simply given bad advice by persons ill-qualified to offer it. However, as you have seen from the responses by other members ( particularly AFPEBLO), the information is out there.
Believe me, we all understand that it is sometimes preferable ( and less painful/aggravating) to poke yourself in the eye with an ice pick than to deal with Tricare on claims issues.
However, it is well worth it to pay the co-pays and receive decent treatment.
v/r
Jack Gately