Morbidity among the Moscow population receiving medical care at clinical hospital No. 85 and among workers, particularly those occupationally exposed to harmful factors, has been studied using an original system of automated processing of medical statistical information. The structure and incidence of the major groups of diseases has been studied in comparison with the mean data for Moscow. Total morbidity of adults and adolescents in 1998 was 1408/1000, which is close to the level for the whole Moscow (1396/1000). Morbidity among men was 1249/1000, which is lower than among women (1595/1000), while the incidence of diseases with temporary disability, primary invalidity, and mortality are higher among men. Population health is better in a relatively closed and socially protected population attached to a single institution in Moscow than in Russia in general; specifically, the incidence of infectious diseases and injuries is lower.