The purpose of the study was to examine the attitudes of nursing and medical teams about the role of oncology clinical nurse specialists in the healthcare system in Israel, where, unlike many countries in the world, such a role has not yet been developed or professionally defined. We conducted 24 interviews with physicians and nurses between August and October 2021. The interviews were transcribed and analyzed using a thematic analysis method. The Consolidated Criteria for Reporting Qualitative Research checklist was used to report the study. Five main themes emerged from the interviews: (1) contribution to the healthcare system, (2) contribution to the patient, (3) drawing professional boundaries, (4) additional responsibilities and authority for oncology clinical nurse specialists, and (5) the field’s readiness for a new position of oncology clinical nurse specialists. The findings provide evidence about the need to develop the role of clinical nurse specialists in the oncology field due to its potential benefits for nurses, physicians, patients, family members, and the healthcare system. At the same time, an in-depth exploration of the boundaries of the role and its implementation, in full cooperation with the oncologists and relevant professional unions, is needed to prevent unnecessary conflicts in the oncology field. Professional development training programs in nursing must create a platform for open dialogue between key stakeholders, nurses, and physicians, in order to help all involved parties, place the benefits to the patients above any personal or status considerations.