I've had my professional-subscription Wall Street Journal app run a full page ad for frozen jamaican hot beef patties (so good...) that I bought a box of at costco earlier that morning. Pretty amusing, just given how off-brand that is for ads that run on WSJ.
Went to a doctor over issues with my feet. Got spammed with ads covering various health issues. Patient data tends to be protected in most countries, no one should have access to when I visit what doctor and I find it insane that Google gets away with using that protected information to sell ads.
Fair guess would be that you leaked that information somewhere along the way - putting the address into google maps, pulling up the dr office phone number on google proper etc.
I have an Android phone, so I wasn't surprised that Googles spyware managed to get that information, I was surprised that they are allowed to collect and use medical information about me without ending on the wrong end of various related data protection laws.
There are no healthcare privacy laws the the USA that apply to Google. Indeed, "medical information" is not generally protected. HIPAA only prevents "healthcare providers and healthcare businesses" from providing that information without your consent. If you disclose or leak medical information to other companies, they are not required to maintain confidentiality and can sell or use that information perfectly legally.
