NIATx has a long history of improving access and retention. For many organizations, this resulted in expansion of their annual revenue by 3-5 times.
The ability to impact access and retention is well-documented in research literature:
A business case for quality improvement in addiction treatment: evidence from the NIATx collaborative. Quanbeck, et. al. (2012). The journal of behavioral health services & research, 39(1), 91-100.
An investigation of an open-access model for scaling up methadone maintenance treatment. Madden, et. al. (2018). Addiction, 113(8), 1450-1458.
The Network for the Improvement of Addiction Treatment (NIATx): enhancing access and retention. McCarty, et. al. (2007). Drug and alcohol dependence, 88(2-3), 138-145.
Which elements of improvement collaboratives are most effective? A cluster-randomized trial. Gustafson, et. al. (2013). Addiction, 108(6), 1145-1157.
Replication and sustainability of improved access and retention within the Network for the Improvement of Addiction Treatment. Hoffman, et. al. (2008). Drug and alcohol dependence, 98(1-2), 63-69.