A very relevant question, Marcel.
Given your background, I would probably start with the target role rather than with the credential.
Healthcare is not a single project environment.
A transition into health IT, hospital operations, clinical transformation, public health or regulatory initiatives can require very different combinations of domain knowledge and experience.
The first question may therefore be: which of these environments makes the strongest use of the capabilities you already bring, and which specific gaps would limit your effectiveness or credibility there?
Much of your experience with complex stakeholders, government programs, compliance, process improvement and ambiguity is likely to be transferable.
But transferability does not make context irrelevant.
Building enough healthcare-specific knowledge to ask better questions, understand the answers and work credibly with domain experts may be more valuable than trying to become a domain expert yourself.
Credentials can certainly help when they close a genuine knowledge gap or provide a signal that the roles you are targeting actually value.
But I would avoid pursuing them simply because you are changing industries.
So rather than choosing between domain knowledge, credentials and transferable experience, I would use the target role to determine the right combination.
Start with what already transfers, identify what needs contextual adaptation or development, and invest specifically in the gaps that matter.