I don’t know why this didn’t show up on my previous web searches, but the Orthodox Church in America has a nice coloring and activity book PDF, talking about the stories of various doctor saints.
And since pretty much all the pre-conciliar saints and the saints accepted by the Byzantine Rite and other Catholic rites are the same, this is something Catholic kids can (mostly) use too.
(Subject to parental review. And St. Luke of Simferopol and St. Matrona of Moscow seem like good recent folks, but they’re not in any Catholic calendars that I know about. Let’s pray for an end to schisms and divisions among Christians.)
The saints are listed in alphabetical order, not in chronological order. Some of the saints have coloring pages, designed to look like icons.
Unfortunately, some of the activities are not amazing, and the colors and layout are much more like fliers than a book. But I think the PDF “ebook” was really intended as a source for church bulletin inserts, and for printouts for catechetical classes. The maps are a really good thing, and the coloring pages too.
A few of the saints are not physicians, per se, but rather are popular healing saints and/or wonderworkers in the various Eastern churches. For example, St. Artemios of Antioch (Flavius Artemius, who served as dux Aegypti under Constantius II, and was martyred by Emperor Julian the Apostate) was a general and politician. But he’s popular as a saint for intercession in cases of men’s diseases, hernias, gut problems, and psychiatric disorders. (Apparently there were lots of later miracles at his tomb in St. John the Forerunning’s church, in Constantinople.)
(Flavius Artemius was an interesting guy. He actually was a supporter of the Arian bishop of Alexandria, George of Cappadocia, and he did a lot of stuff that would be the work of a villain or a bad official. But at the end, he stood up to Julian when others would not. So he’s probably a good intercessor for any politicians whose soul you worry about.)
Anyway, I don’t know anybody else who’s done a book like this, although saint coloring books are pretty common. It might be a good idea for other Christian churches!
The OCA has similar resources about Orthodox saints with animal friends, and so on. Most of the others are more Orthodox-oriented, although some parts of the books may be suitable for Catholic kids.
Kudos to the artist of the coloring pages!