I work for a IT company in healthcare. We also do FHIR, interoperability, and such. This is the easy part. The really hard part is to get customers. It means

I work for a IT company in healthcare. We also do FHIR, interoperability, and such. This is the easy part. The really hard part is to get customers. It means having a network, a good reputation, to reply to tenders in time with a ready to use solution that is competitive, adapt to the cursomers needs, etc... We have more employees doing sales and support than software. You may find work as a contractor for a healthcare company though.