In the medical research field, "peer-review" means that a manuscript is sent to experts who are knowledgable about the specific topic of the manuscript, who review it for clarity of writing, methodology, and scientific accuracy before a decision is made whether to accept it for publishing.
This "International Journal of Health Services" is not, as far as I can tell, peer-reviewed. The author mentioned, Joseph Mangano, has not, as far as I can tell from a PubMed search, ever published an article in a peer-reviewed journal.
Thx for good info on peer-reviewed.