Team Relationships and Performance: Evidence from Healthcare Referral Networks

Area of Science:

• Health Services Research
• Clinical Team Dynamics
• Healthcare Management

Background:

• Primary care physicians (PCPs) coordinate patient care by referring them to specialists.
• The structure of these referral networks can influence the efficiency and effectiveness of care delivery.
• Understanding how PCP referral patterns impact specialist collaboration is crucial for optimizing healthcare systems.

Purpose of the Study:

• To investigate the relationship between PCP referral concentration and healthcare utilization.
• To determine if focused PCP referrals to specialists enhance team performance.
• To assess the impact of PCP referral patterns on patient health outcomes.

Main Methods:

• Developed a novel measure of PCP team referral concentration using claims data.
• Analyzed data from the Massachusetts All Payer Claims Database and a national Medicare claims sample.
• Employed various identification strategies to control for patient and physician characteristics.

Main Results:

• PCP team referral concentration varies significantly across physicians.
• Patients treated by PCPs with higher referral concentration experienced 4% lower healthcare utilization.
• No discernible reduction in quality of care was observed with increased referral concentration.

Conclusions:

• Concentrating specialist referrals fosters repeated interactions between PCPs and specialists.
• Repeated interactions incentivize the development of productive team relationships.
• Improved PCP-specialist team performance, driven by referral concentration, leads to reduced healthcare utilization.