Clean up Health::PatientReferral#create_patient

[awisema]

Please squash merge this PR

Description

Include a summary of the changes and a link to the related issue. List any dependencies that are required for this change.

Type of change

• Bug fix
• Code clean-up / housekeeping

Checklist before requesting review

• I have performed a self-review of my code
• I have run the code that is being changed under ideal conditions, and it doesn't fail
• My code includes comments and/or descriptive variable names to help other engineers understand the intent (or not applicable)
• My code follows the style guidelines of this project (rubocop)
• I have updated the documentation (or not applicable)
• If it's not obvious how to test this change, I have provided testing instructions in this PR or the related issue

[awisema]

Test failures -- moved to WIP until I can look at them,