Both SeriousMD users as well as those still using paper records are required by the NPC to register. It’s not just for SeriousMD or digital users.
You need to register with the NPC if you have collected information or process at least 1000 records.
Phase 1 is just for registration. Phase 2 is a lot harder and being a SeriousMD user, you will have a much easier time accomplishing it.