Authors: Imam Xierali*, AAMC
Topics: Medical and Health Geography, Geographic Information Science and Systems, Spatial Analysis & Modeling
Keywords: Georgia; Medicaid; multi-site; physician workforce; spatial accessibility
Session Type: Paper
Start / End Time: 8:00 AM / 9:40 AM
Room: Grand Ballroom B, Astor, 2nd Floor
Presentation File: No File Uploaded
Physician multi-site practicing may affect local spatial accessibility to physician services. However, there is a general lack of study measuring the degree of multi-site practicing largely due to the dearth of data capturing such practice patterns. This study describes physician multi-site practicing patterns in Georgia. The secondary aim is to assess the impact of multi-site practicing on spatial accessibility to physician services. Data from the Georgia Medicaid Management Information System and the American Medical Association Physician Masterfile, and US census were used to evaluate prevalence of physician multi-site practicing. We calculated the mean number of practice sites per physician and modeled the number of sites per physician using negative binomial regression. Local differences in single-site based and multi-site based spatial accessibility were assessed. Among 20,116 physicians (mean age, 49.4 years; 30.5% female) in Georgia, 63.2% reported multiple practice sites. While mean number of practice sites per physician was 3.3, the number was 2.6 for primary care physicians and 3.6 for other physicians. Younger age, male status, and practicing in group practice setting were associated with higher number of practice sites per physician. Spatial accessibility index changed substantially controlling for physician multiple practice sites. In conclusion, multi-site practicing was prevalent among physicians and affected geographic access to care. Given the prevalence of multi-site practicing among physicians and its impact on public access to health care, more research and investment into health workforce information infrastructure to accommodate changing physician practice patterns in data collection and dissemination seem warranted.