Hi James,
Not a paid formal network like the CIA or KGB, but JW "contacts" who work at a number of U.S. Agencies. This is not a belief, but was a fact when I was at Bethel. It WAS the reason JWs stopped asking for specific amounts of money at the door for Magazines and instead started saying "Donations". I heard about the change and the information by a member of the Governing BodyBEFORE it was instituted. The players I knew are retired and dead now. Back then underground countries used a "mail drop" as well. So I was curious as to what current status was and if anyone on this site was more current. With the expansion and sophistication of the IT and legal departments I would expect this to have become more sophisticated over time, not less.
Religious and patriotic "DUTY" are very strong motivators and have been driving forces for FREE information gleaning for thousands of years.
I had a very close relative (not a JW) ex- military, electronics Company executive who for years traveled to East Bloc countries for his employer. He and his employer gladly provided US agencies information and assistance gratis. He had quite the eclectic assortment of "people" at his backyard BBQs upon return from trips to the East Bloc. Most countries do this. Isreal is the most adept with this because of the wide dispersion of patriotic/religious Jews who "help" for free. VERY common.
The medical records thing is simply the result of a small percentage of "fervent sisters" at medical facilities calling local C.O.s.- NOT organized.