PURPOSE To examine the geographic distribution of physician and pharmacist workforce specialized in oncology in the United States. METHODS Using the National Provider Identifier data, we identified two types of oncology workforce via the healthcare provider taxonomy codes. Oncologists were physicians self-identified as providing oncologic care to patients. Oncology pharmacists were pharmacists with an oncology subspecialty. We calculated the geographic density of physician and pharmacist oncology workforce and used county-level cancer crude rates to quantify the demand for oncology workforce. We used spatial data to plot the density of oncology workforces relative to county-level cancer rates and compared the county-level density of oncologists and oncology pharmacists. RESULTS Of the 30,553 members of the oncology workforce in 2019, 28,681 were oncologists and 1,090 were oncology pharmacists. The mean county-level density of oncologists was 2.94 (SD = 7.32) per 100,000 persons. Sixty-four percent of counties had no oncologists with primary practice location in that county and 12% had no oncologists in the local and adjacent counties. Counties in the top quartile of cancer rates had the highest percentage without any oncologists with primary practice location in the county (75%) and with no oncologists in the local as well as adjacent counties (16%). CONCLUSION Geographically mismatched demand and supply characterized the current oncology workforce. Wide discrepancies in the supply of oncologists across geographic regions highlight the importance of developing core competencies for health professions not specialized in oncology to deliver quality cancer care in areas with unmet need for oncology care. (C) 2020 by American Society of Clinical Oncology
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