- Objective To determine the effect of self-experience multidisciplinary lifestyle intervention on health care providers (HCPs), patients and clinics. Methods We randomized 15 primary-care clinics (serving 93,821 members), matched by patient profile, to provide the HCPs, either intervention or control HMO program. We followed personally 77 HCPs and 496 patients, and evaluated clinical measurement rate (CMR) changes (January–September 2010; Israel). Results HCPs within the intervention group demonstrated personal improvement in health initiative attitudes (p < 0.05 vs. baseline), and a decrease in salt intake (p < 0.05 vs. control). HCP intervention group's patients exhibited overall improvement in dietary patterns, specifically in salt, red meat (p < 0.05 vs. baseline), fruit, and vegetable (p < 0.05 vs. control) intake. Height, lipids, HbA1C and CMR increased within the intervention group's clinics (p < 0.05 vs. baseline) with increased referral to angiography tests (p < 0.05 vs. control). Within the intervention group, HCPs' salt pattern improvement was associated with increased lipid CMR (r = 0.71; p = 0.048), and lower HCPs' body weight was associated with increased blood pressure (r = − 0.81; p = 0.015) and lipid (r = − 0.69; p = 0.058) CMR. Conclusions HCPs' personal lifestyles are directly correlated with their clinical performance. Interventions to promote health through HCP's self-experience are valuable and somewhat haloed to patients and clinics, suggesting an adjunct strategy in primary prevention.