LibKey.io provides an easy interface to search for articles by DOI and PMID numbers. The IU Northwest has its own instances that can be bookmarked for easier access.
Once on this page, enter the DOI or PMID into the search box and click the find button to run your search.
If successful, you will see a condensed summary of article details and access options on the right side of the screen.
The following examples come courtesy of Third Iron's LibKey.io LibGuide page.
Examples to try (copy and paste these into the box above):
If the DOI/PMID is not found in your library collection, a Link Resolver option will be shown to allow linking to your link resolver/document delivery options for fulfillment along with all known metadata.