Over the past 20 years, the most substantial increases in prevalence, morbidity, and mortality of asthma have been observed among children aged 5-14 years. A survey instrument designed to measure clinical asthma management practices of primary care physicians was developed and evaluated. Study participants included 127 practitioners providing pediatric asthma care in inner-city communities in Baltimore, MD and Washington, DC. Study results found that the instrument assessed four separate dimensions of clinical assessments and five dimensions of physician perceptions. These dimensions should be considered in future research protocols and may be used to design tailored interventions to improve asthma care.