Expats in Indonesia usually arrive with one of three situations: a corporate international plan, a travel policy stretched far past its purpose, or nothing at all beyond a credit-card benefit.
Local plan or international plan?
A local Indonesian plan is cheaper and works smoothly with Indonesian hospitals and direct billing. An international plan costs considerably more but covers evacuation, treatment in Singapore, and, crucially, follows you when you leave.
The deciding question is not price. It is whether you would want to be treated here for something serious. For most routine care, Indonesian private hospitals are perfectly good. For complex oncology or neurosurgery, many expats prefer Singapore, and only an international plan makes that a covered choice rather than a cash decision.
Portability is the thing worth paying for
If you develop a condition while covered by a local plan and later move country, you will apply for new cover as someone with a pre-existing condition. A portable international policy carries your medical history with it, with continuous cover intact.
Evacuation is not automatic
Medical evacuation from Bali or a remote posting is expensive and logistically complex. It is included in most true international plans and excluded from most local ones. Check the wording, not the brochure.
Visa status and residency
Your KITAS or KITAP status affects which local products you can buy and which underwriting applies. Employer-sponsored cover often ends with the sponsorship, which for many expats means it ends with the visa, the same week you may need to arrange onward care.