Universal Occupational Licensing Recognition and Healthcare Access

10/01/2025
Summary of working paper 34030
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This figure contains two line charts titled "Universal Licensing Recognition, Healthcare Utilization, and Costs" with a subtitle explaining that estimates show percentage point differences between Universal Licensing Recognition (ULR) states and non-ULR states. The y-axis for both charts shows percentage point differences ranging from -6 pp to 10 pp. The x-axis for both charts shows months relative to implementation of ULR, ranging from -24 to 48 months. The charts include shaded areas representing 95% confidence intervals around the main trend lines, and a vertical dashed line marking the adoption of ULR at month 0. The left chart shows the proportion of people having personal doctors, which increases from around 0 percentage points before ULR implementation to approximately 6 percentage points after implementation, with the effect stabilizing around 3-4 percentage points by 48 months. The right chart shows the proportion of people who couldn't see a doctor due to cost, which remains relatively stable around 0 percentage points throughout the entire period with slight fluctuations but no clear trend. A note on the figure reads: "Shaded areas represent 95% confidence intervals." The source line reads: "Source: Researchers' calculations using data from the Behavioral Risk Factor Surveillance System."

 

Healthcare shortages in some regions of the United States have prompted policymakers to seek ways to redistribute physicians. Reducing regulatory barriers limiting interstate practice has been highlighted as one way to improve regional healthcare access and patient outcomes.

In Does Universal Occupational Licensing Recognition Improve Patient Access? Evidence from Healthcare Utilization (NBER Working Paper 34030), researchers Yun taek Oh and Morris M. Kleiner examine whether Universal Licensing Recognition (ULR)—a policy that allows out-of-state physicians to practice without relicensing—affects healthcare utilization.

Universal occupational licensing recognition allows physicians from any state to practice without relicensing, increasing patient access to personal doctors and reducing cost barriers.

The researchers distinguish ULR from the Interstate Medical Licensure Compact (IMLC), which only facilitates license portability between participating states. ULR is more comprehensive. Because it recognizes licenses from any US state, it potentially expands the pool of available physicians. While the IMLC covers about 80 percent of US physicians, ULR could enable the remaining 20 percent to practice across state lines without lengthy relicensing processes.

Using data from the Behavioral Risk Factor Surveillance System from 2018 to 2023, the researchers measure how healthcare utilization changed after states adopted ULR. They supplement this with data from IPUMS USA, IPUMS CPS, and the Centers for Medicare & Medicaid Services to examine changes in physician mobility and practice patterns.

The proportion of individuals with personal doctors or healthcare providers significantly increased in states that adopted ULR. This effect was particularly pronounced among older individuals (ages 45–64) and seniors (ages 65–79), populations with higher healthcare needs. There was also a significant reduction in the proportion of individuals who reported not seeing a doctor due to cost constraints.

The researchers did not find any significant increase in interstate migration of physicians following ULR adoption. Instead, expanded healthcare access came through increased use of out-of-state practices—physicians practicing across state lines without relocating, including temporary and telehealth physicians. Interestingly, states that adopted ULR but imposed residency requirements showed no significant rise in healthcare utilization, suggesting that such requirements effectively nullified the effects of license recognition.

The researchers find that the observed expansions in healthcare access were specifically attributable to universal reciprocity of physician licenses rather than other factors related to ULR adoption. The effects remained consistent even when controlling for Medicaid expansion and other potentially confounding factors. The findings suggest that ULR can affect the regional distribution of physicians and increase healthcare access without requiring physical relocation of the workforce.