Those Type Concepts you mention are obsolete and their standard_concept is set to null. We overhauled all of them recently.
The new ones are would be
- 32869 Pharmacy claim or 32825 EHR dispensing record depending whether the information comes from the pharmacy or EHR
- 32838 EHR prescription or 32839 EHR prescription issue record
- 32818 EHR administration record
No. Type Concepts are declaring the source of the information. Not the source of the act. That you need to look up in the PROVIDER table record linked to the DRUG_EXPOSURE record through the provider_id field.