Abstract Background Type 2 diabetes mellitus, cardiovascular disease and chronic obstructive pulmonary disease contribute significantly to societal and individual impact globally. High‐quality management of these long‐term health conditions is important to prevent deterioration of health, although potentially more complex for patients with intellectual disabilities in residential care. Disease management in this context particularly benefits from complete and accurate recording of disease management. Without complete records, long‐term health conditions are more difficult to track due to the level of uncertainty regarding which clinical examinations have and have not been performed. This study therefore aims to examine the recording routines of quality indicators for disease monitoring for chronically ill patients with intellectual disabilities in Dutch residential care. Methods This retrospective study utilised medical record data from a large Dutch long‐term care provider. We assessed the occurrence of cardiovascular disease (ICPC‐2 codes K74, K75, K76, K89 and K90), type 2 diabetes mellitus (T90, T90.02) and/or COPD (R91, R95). For adults with intellectual disabilities and long‐term condition, we analysed data entries in an 18‐month period (between July 2020 and December 2021). Observed consultation rates were calculated and presented in median with interquartile range and contrasted against the baseline number of consultations in primary care. Information on recorded quality indicators was presented in frequencies and percentages. Findings Of the three long‐term conditions investigated, the most common was type 2 diabetes mellitus (8.6%; n = 287), followed by cardiovascular disease (5.8%; n = 195) and COPD (3.0%; n = 101). Of those who received management for their long‐term condition from their contracted GP, patients with type 2 diabetes mellitus, cardiovascular disease, or COPD had fewer consultations in 2021 than the Dutch baseline. Discussion of lifestyle was often not recorded. Disease monitoring ...