Hi Ken,
Thanks for reaching out!
Generally, as a provider working with a Health IT vendor that has already implemented a production app integrated with DPC API, the Health IT vendor would have already completed the demo step when adding their first organization. The Health IT vendor who is accessing the API on your behalf would have also provided one of the security certifications to satisfy that requirement, so that step would have already been completed as well.
To confirm that the Health IT vendor has completed those steps and to apply for production access to claims for your patients, please reach out to DPC...@cms.hhs.gov and provide your agreement to the DPC Terms of Service (link to ToS: https://dpc.cms.gov/terms-of-service). Someone from the DPC team will follow-up if additional information is needed.
Best,
The DPC Team