The United States is in the midst of a maternal mortality and morbidity crisis, with more than half of maternal deaths occurring within the first postpartum year. Patients with hypertensive disorders of pregnancy (HDP) and diabetes have been found to be particularly high-risk, as they have a significantly increased risk for the development of cardiovascular disease in the long-term postpartum period. Traditionally, postpartum care has consisted of a single office visit at six weeks postpartum. Recent research has suggested that postpartum care should be an ongoing process, tailored to each woman's specifics needs. The purpose of this research study is to evaluate the effectiveness of obstetric care providers as primary care providers for patients at increased risk of maternal morbidity and mortality in the full first postpartum year.