Meaghan’s research interests lie in developing alternative models of primary care service delivery for hard-to-serve populations, particularly primary care models for patients with HIV. She is working to identify best practices for multidisciplinary primary care teams and gaps in HIV-specific knowledge among different members of those teams. She has been involved in investigating the service needs of individuals coinfected with HIV and Hepatitis C (HCV) and advocates for physicians to be more knowledgeable about HCV treatment for people with HIV, including patients currently involved in intravenous drug use (IDU). 

Meaghan devotes a significant amount of time and attention to mentoring and guiding up-and-coming physicians. In her supervision of medical students and residents, she aims to infuse their medical training with a nuanced understanding of HIV and how to address the disease in primary care settings. She has supervised research projects competed by students investigating these topics.

• HCV Treatment Initiation and Outcomes in HIV-HCV Co-Infected Patients Followed at the Ottawa Hospital Viral Hepatitis Program (PI) 2006

The impact of Meaghan's work can be seen most directly among the patients she serves and the medical students she supervises. Through her work with the Homeless Project, she is part of an innovative model in which street involved individuals receive primary care in their own environments. Many of the individuals she serves through the project - nearly a third of whom are living with HIV - would likely not have access to preventative and primary care. She is committed to mentoring students in HIV medicine and encouraging new physicians to include people with HIV in their practices. Her students graduate with a better understanding of the needs of people with HIV and a commitment to meet those needs. Her 2006 study of coinfected patients highlighted the correlation between the social determinants of health and access to HCV treatment, and included a strong call for better education for physicians and for action within medical settings to address the determinants of health.