Geographic Distribution of Gastroenterologists and Patients With Inflammatory Bowel Disease in the United States.

ABSTRACT:

Introduction

We aimed to map the distribution of patients with inflammatory bowel disease (IBD) and gastroenterologists throughout the United States and identify local-level and state-level variations in the availability of specialist care.

Methods

For each first 3-digit ZIP code tabulation area (ZCTA) and state in the United States, we calculated the density of patients with IBD (Crohn's disease or ulcerative colitis) per 100,000 population, gastroenterologists per 100,000 population, and gastroenterologists per 100 patients with IBD. We used 2022 claims data to identify patients with IBD, the 2022 National Provider Identifier registry for provider details, and the 2020 US Census for area-level variables.

Results

Overall, 520,020 patients with IBD and 21,611 gastroen

SUBMITTER: Upadhyay N 

PROVIDER: S-EPMC12922908 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature