Therefore, the goal of this randomized trial is to test an intervention that teaches clinicians to integrate the use of TMs with the key skills of motivational interviewing tailored to address smoking and weight management in the outpatient visit setting. This goal will be accomplished using a group randomized trial of 32 clinicians (1152 patients). The initial Teachable Moment Communication Process (TMCP) intervention will focus on smoking cessation as the health behavior topic. After the initial intervention is evaluated, the clinicians assigned to the control group will receive a revised TMCP intervention with a focus on weight management. The TMCP intervention involves multiple modalities including skills-based training, practice with standardized patients and on-site coaching. Audio recordings of visits with patients who smoke or are obese will be used to assess both intervention and control clinicians' health behavior change strategies at baseline and post intervention. Patient surveys will be used to assess the effect of the observed health behavior change strategies on immediate and short-term patient outcomes. Leveraging clinicians' naturally-occurring health behavior change strategies by fostering the development of more effective communication skills has great potential to enhance patient health behavior change. This study will test this strategy and generate rich data about its effectiveness and how it is tailored by physicians in practice for both smoking and weight management; two important risk factors for cancer and other devastating chronic diseases.