TABLE 2.

Observed and Expected Costs by Risk Stratum for PCMD and PCNP Attributed Medicare Beneficiaries (n=467,944)

Risk Stratum	PCMD Mean Expected Costs	PCNP Mean Expected Costs	PCMD Mean Observed Costs	PCNP Mean Observed Costs	PCMD Beneficiary Count	PCNP Beneficiary Count	Total Beneficiary Count	% PCNP of Total
Low risk (30%)	$718	$676	$1450	$1082	111,473	28,912	140,385	21
Moderate risk (40%)	$2895	$2859	$2691	$2141	152,382	34,798	187,180	19
High risk (30%)	$7636	$7283	$7520	$6222	118,269	22,110	140,379	16

PCMD indicates primary care physicians; PCNP, primary care nurse practitioners.