Hi there, wondering if there is a system URL for an organization's EIN or tax ID? More generally, wondering where I should look to find this kind of information myself? (This might be more of a FHIR question than a Medplum question, so I'm happy to problem solve independently if that's the case and this isn't an easy question to answer!)

Hi @Maxine Whitely ! Yes, there is a system URL for an EIN/tax ID would be something along the lines of irs.gov. Here is an example: https://terminology.hl7.org/4.0.0/NamingSystem-USEIN.json.html