The study presented in this paper examines the influence of demographic factors on five predictors of online marketing that affect the purchasing behavior of medical professionals. This descriptive research collected data from 500 medical professionals in Haryana, India, using a judgment sampling method. The data were analyzed using SPSS and AMOS. The study considers three demographic variables—gender, age, and marital status—and five online marketing predictors: buying behavior practices, user-friendly buying behavior practices, prior buying behavior practices, success factors, and hindrance factors. These predictors were developed for modeling structural equations. The results indicate that demographic characteristics significantly influence the predictors of medical professionals’ purchasing intentions. The study highlights the importance of enhancing industry-specific digital platforms, broadening target audiences, and understanding critical strategies that significantly impact consumer behavior.