The American Patient Activation Measure-22 questionnaire (PAM-22) quantifies the knowledge, skills, and confidence essential to manage own health and health care. It is a central concept in chronic illness care models, but studied sparsely in homeopathic hospitals. PAM-22 was translated into Bengali and a cross-sectional study was undertaken in chronically ill 417 patients visiting the outpatient clinic of Mahesh Bhattacharyya Homeopathic Medical College and Hospital, India. Response rate was 90.41%. Data were analyzed using Rasch rating scale model with Winsteps. Activation score was 54.7 ± 8.04 or 62.13% of maximum score. PAM scores differed significantly by age, education, income, and health status (P < .05). The items had good data quality fit statistics and good range of difficulty. The construct unidimensionality was confirmed by good model fits for Rasch model and principal component analysis of residuals found no meaning structure. The questionnaire showed acceptable psychometrics. Patient activation was moderate and needs to be improved.