Johnson & Johnson has acquired HealthMedia, an online health counselor and web intervention provider. Financials were not disclosed. Founded in 1998, HealthMedia has about 140 employees and posted $23 million in revenue last year. Its suite of interventions covers disease management and behavioral health, among other initiatives. It will remain based in Michigan and, according to J&J, won’t see any management restructuring. J&J, which already owns baby and mom-focused BabyCenter, had been looking for a way to reduce per capita health plan costs and “improve overall employee health and productivity.”