What action could the provider have taken to ensure proper care for Susie's medical issues before discharge?

The best action for the provider to take to ensure proper care for Susie's medical issues before discharge is to search the Prescription Drug Monitoring Program (PDMP), if available. The PDMP is a valuable tool that healthcare providers can use to track patients' prescription histories, particularly concerning controlled substances. By accessing this database, the provider would gain insight into Susie's medication use, including any potential risks of overdose, drug interactions, or misuse. This critical information can contribute to making informed decisions about her ongoing care and treatment plan, ultimately ensuring her safety and well-being as she transitions out of the medical setting.

The other options, while they might seem beneficial, do not directly address the immediate need for medical oversight regarding her prescriptions. Calling her mother might provide additional context or support but lacks a direct medical benefit. Discontinuing all medications could lead to withdrawal symptoms or a return of the conditions for which she was treated, which would not be prudent. Contacting her counselor could help with her psychological or social support needs, but it does not ensure that the provider has complete information about her medical treatment before discharge. Thus, searching the PDMP stands out as the most responsible and informed action to ensure Susie's safe medical care.