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Establishing a Full NP SOP in Michigan Could Improve Outcomes, but Evidence Is Limited

• Overall, evidence of the relationship between NP SOP regulations and any specific aspect of health care delivery is relatively limited (in terms of number and quality of studies). We identified only 14 studies.
• The literature review suggests that full SOP can possibly contribute to improvements in provider supply, access to care, utilization of care, and quality of care (patient-centeredness). The effect of full SOP on costs and health outcomes was largely inconclusive.
• Our exclusion criteria resulted in only two studies being included in the estimates of Michigan-specific impacts. Using these restrictions, we were able to calculate expected effects on access and quality. Our estimates suggest that establishing full SOP for NPs could lead to potentially meaningful improvements in access and quality (patient-centeredness) in Michigan.