The importance of collaboration in maternity care in the U.S. is apparent with deficits in both care disparities and quality, despite disproportionate expenditures to improve care. Utilization of experienced, well-trained clinicians, such as obstetric and midwife hospitalists, offers a strategy to improve outcomes, reduce cost, and enhance patient experiences: goals consistent with the Quadruple AIM strategies. Obstetricians may have knowledge deficits regarding the training, role, and scope of practice of Certified Nurse-Midwives or Certified Midwives. This lack of familiarity may impede the development or acceptance of a collaborative hospitalist model. The objective of this project was to determine knowledge and attitude change in obstetric hospitalist physicians about midwives utilizing an online education module with a pre- and post-survey. The study sample included physicians employed by a large, nation-wide obstetric hospitalist group. Approvals were obtained through Georgetown Institutional Review Board (IRB) and company administration; the invitation was made via company email. Sixty-five physicians voluntarily completed all components. Findings showed an overall increase in knowledge about and positive attitudes toward midwives post-intervention. A common area of knowledge deficit identified by physicians was in the education of midwives. Online education can be an effective tool for physician education and promote understanding of the training and scope of practice of midwives. As needs for team-based, patient-centered care continue to evolve, dissemination of knowledge of what midwives contribute to the maternity care arena is essential. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]