What disability percentage do I need in order to keep receiving benefits once I separate from the Army?

30% or higher medical separation from the military u are retired and get retired CAAC card and commissary and exchange privileges

Military benefits and VA ratings are completely separate and dealt with by separate organizations.

At 50% VA Disability ($1,070/monthly'ish) you get health benefits at your registered VA hospital. No dental or vision unless at 100% OR your disability rating is related to dental/vision.

Military benefits really end at the termination of your active duty time, save for your GI BILL. If you retire you get a retired ID Card and can use the PX. Regardless, your question is really two different components of being a veteran and unrelated. Your 1SG for instance has NOTHING to do with your Discharge Type or disability rating.

Benefits- hmm- 50% normally gets you VA healthcare- or if your disability was directly caused be service- you sometimes qualify for care. All veterans are now qualified to shop on line at AFEES. Most of the time medication for the disability will come thru the VA for free.