Scope-of-practice regulations matter
The scope of practice permitted NPs and PAs varies by state, and Dr. Barnett and coauthors also looked to see whether broader scope of practice meant that more advanced practice clinicians were getting buprenorphine waivers. This did appear to be the case: In an analysis that dichotomized scope of practice into “broad” and “restricted,” states with broader practice scope saw twice as many waivered NPs per 100,000 rural residents as those with restrictive practice scope. This association was not seen for PAs, but Dr. Barnett pointed out that PAs are less likely overall to work in primary care.
This, he added, is where scope of practice starts to matter. “A lot of states are still bickering about scope of practice. We show in our paper the clear relationship between scope of practice and the degree to which providers are able to take up these waivers. We can’t prove causality, but I think it’s not a big stretch to think that these policies are playing a big role. I hope we’re working to try to advance that conversation.”
Helping address the unmet need for evidence-based treatment of opioid use disorder, he said, “is one of the more important examples, because doctors have been leaving rural areas in droves. We are lucky that there is a workforce of NPs that still seem to recognize the market opportunity; rural areas still need providers, and they have been willing to fill the gap.”
Waivered NPs or PAs can apply for an expanded waiver, permitting expansion of the buprenorphine panel from 30 to 100 patients after 1 year of holding their initial waiver. Physicians may apply for a waiver to treat up to 275 patients.
Effect on quality of care
The evidence doesn’t support big worries about quality of care, he said. “We don’t have any data on this in the clinical context of addiction, but all of the data that are out there in terms of evaluating the quality of care and level of care being offered by NPs and PAs versus primary care doctors – the types of things that we think of as within the scope of NP and PA practice typically – have shown that they are the same.” Dr. Barnett acknowledged that “there are a little bit of mixed results here and there in one direction or another, but largely, the care being delivered is much more the same than different.”
In addressing the opioid crisis as in the rest of medicine, it’s a mistake not to include this sector of the health care workforce when policies are being crafted, said Dr. Barnett. “People who are making policy and aren’t familiar with the workforce in rural areas could miss the boat. ... NPs aren’t just an asterisk to the workforce – they are an essential part of delivering medicine, just as much as physicians are.”
Dr. Barnett said that, in his estimation, “a lot of protectionist myths get physicians worked up around increased scope of practice for NPs.” However, “The truth is that there’s enough health care spending to go around for everybody and there’s plenty of work to go around.”
Dr. Barnett acknowledged that the current study captured only prescribing capacity, and not actual prescription volume. But, based on some preliminary data, “my sense is that NPs and PAs who acquire waivers are more likely to be prescribing to a larger number of patients proportionately than MDs.” He wasn’t surprised to see this, since the many more hours of training required for NPs and PAs to acquire a waiver means they’re likely to be committed to using the waiver in practice.
Stepping back to look at the bigger picture, Dr. Barnett remarked that, “taking a look at the waiver requirement, a part of me feels that it’s a bit of an anachronistic regulation, anyway – it’s really hard to justify clinically or ethically versus other things that we do.” The waiver program he said, is “a regulation barrier whose time should be limited. ... I’m hoping that the waiver disappears soon.”
Prescribing issues will linger beyond any future abolition of the waiver program, since many clinicians will still not be comfortable prescribing medication for MAT of opioid use disorder, said Dr. Barnett. “It’ll be a lot of the same stigma and structural barriers that were in place prior to the waiver.”
Dr. Barnett reported that he has been retained as an expert witness for plaintiffs in lawsuits against opioid manufacturers. The study was partly funded by the National Institutes of Health.
SOURCE: Barnett ML et al. Health Aff. 2019 Jan;38(12):2048-56.