P oor access to specialist physicians and allied health professionals (hereafter referred to as "specialists") and long wait times are pervasive problems facing many health care systems. 1 Relative to its international peers, Canada struggles to provide timely access to care. 2 Canadian wait times between referral and appointment are twice as long as they were 25 years ago, increasing from an average of 9.3 weeks in 1993 to 19.8 weeks in 2018. 3 Currently, most outpatient clinicians use a "multiple-queue, multiple-server" model to manage their referrals and wait lists, whereby each clinician has a separate queue. 4 As such, clinicians of the same specialty, working in the same region, may have different approaches to managing referral and wait lists, potentially leading to inequitable and suboptimal patient outcomes. In contrast, single-entry models assemble patients referred to specific specialists in a given jurisdiction into a single queue, thereby allowing each patient to see the first available specialist. The single-entry model consists of a centralized intake (i.e., referrals are received through a single point of entry) or a pooled referral system (i.e., merging of multiple waiting lists), along with a centralized, coordinated approach to triage (i.e., appointments arranged according to urgency). 5 The single-entry model is based on queuing theory 6 and has been proven successful in operational fields such as the airline industry. 5 In health care, the benefits of this model are thought to relate to rebalancing of supply (i.e., clinician availability) and demand (i.e., the number of referrals). 4 In addition, sicker patients may be seen faster with a central intake system, whereby the patient is referred to an available provider according to urgency. Although single-entry models may prevent duplicate and cancelled appointments, they may also limit choice and reduce satisfaction. 4 A prior review