As principal investigator on multiple large-scale studies funded by NIH, AHRQ, and the Robert Wood Johnson Foundation, Dr. McHugh’s work has advanced the field of nursing outcomes and policy research by showing the value of investing in nursing as a vehicle to achieve a higher functioning health care system. For example, Dr. McHugh has conducted studies directly evaluating implemented policy; papers from his AHRQ-funded study evaluating the impact of a California law mandating minimum nurse-to-patient ratios in hospitals have been published in leading policy journals including Health Affairs and The Milbank Quarterly. He is now evaluating a new nurse-to-patient ratio mandate in Queensland, Australia. Dr. McHugh has also carried out a number of studies evaluating the impact of nurse practitioner scope-of-practice restrictions and Medicaid reimbursement rates on access to care.