Telemedicine's Impact on Diabetes Care During the COVID-19 Pandemic: A Cohort Study in a Large Integrated Healthcare System

J Diabetes. 2025 May;17(5):e70096. doi: 10.1111/1753-0407.70096.

Abstract

Aims: To examine whether patients exposed to primary care telemedicine (telephone or video) early in the COVID-19 pandemic had higher rates of downstream HbA1c measurement and improved HbA1c levels in the second year of the pandemic.

Methods: In a cohort of 242,848 Kaiser Permanente Northern California patients with diabetes, we examined associations between early-pandemic patient-initiated telemedicine visits and downstream HbA1c monitoring and results during the second year of the pandemic.

Results: Adjusted HbA1c measurement rates were significantly higher among patients with telemedicine exposure in the early-pandemic prior year than those with no visits in the prior year (91.0% testing for patients with video visits, 90.5% for telephone visits, visits, 86.7% for no visits, p < 0.05). Among those with HbA1c measured, the rates of having an HbA1c < 8% in the second year of the COVID-19 pandemic were also statistically significantly higher among patients with telemedicine exposure in the early-pandemic prior year than those with no visits in the prior year (68.5% with HbA1c < 8% for video visits, 67.3% for telephone visits, 66.6% for no visits, p < 0.05).

Conclusions: Access to telephone and video telemedicine throughout the early COVID-19 pandemic was associated with patients' continued engagement in recommended diabetes care. Although our study analyzed telemedicine use during a pandemic, telemedicine visits may continue to support ongoing health care access and positive clinical outcomes.

Keywords: COVID‐19 pandemic; HbA1c; diabetes; primary care; telehealth; telemedicine.

MeSH terms

  • Adult
  • Aged
  • COVID-19* / epidemiology
  • California / epidemiology
  • Cohort Studies
  • Delivery of Health Care, Integrated*
  • Diabetes Mellitus* / blood
  • Diabetes Mellitus* / therapy
  • Female
  • Glycated Hemoglobin / analysis
  • Glycated Hemoglobin / metabolism
  • Humans
  • Male
  • Middle Aged
  • Pandemics
  • Primary Health Care
  • SARS-CoV-2
  • Telemedicine*

Substances

  • Glycated Hemoglobin
  • hemoglobin A1c protein, human