Physician role differentiation: Patients, practice patterns, and performance.

Area of Science:

• Healthcare Management
• Clinical Practice
• Physician Differentiation

Background:

• Multispecialty clinical settings are growing due to healthcare complexity.
• Overlapping expertise among physicians presents challenges.
• This study examines hospitalists and inpatient specialists to understand role differentiation.

Purpose of the Study:

• To explore how hospitalists differentiate from other inpatient physicians in shared expertise areas.
• Focus on patient populations, practice patterns, and performance metrics.
• Analyze differences in cost and quality outcomes.

Main Methods:

• Utilized mixed-effects multilevel and mediation models.
• Analyzed medical records and disaggregated billing data.
• Data from a large urban pediatric hospital (2009-2015).

Main Results:

• Hospitalists manage patients with ambiguous diagnoses and multiple chronic conditions.
• Hospitalists order fewer laboratory tests and medications than specialists.
• Lower testing rates mediated hospitalists' lower charges and fewer adverse events, with similar readmission rates.

Conclusions:

• Physicians differentiate roles through patient assignment and practice patterns (e.g., test orders).
• Differentiation aids care coordination and professional identity in overlapping roles.
• This study highlights distinct practice patterns between hospitalists and specialists.