Company

Rx Covered Lives

Market Share

Express Scripts, Inc.

90,000,000

13.48%

CVS/Caremark Rx, Inc.

85,100,000

12.74%

Medco Health Solutions, Inc.

65,000,000

9.73%

ICORE Healthcare, Inc.

60,000,000

8.99%

Health Information Designs, Inc.

52,000,000

7.79%

NovoLogix

40,000,000

5.99%

MedImpact Healthcare Systems, Inc.

32,000,000

4.79%

Argus Health Systems, Inc.

28,600,000

4.28%

HealthTrans

15,100,000

2.26%

Prime Therapeutics LLC

15,000,000

2.25%

Provider Synergies, LLC

14,000,000

2.10%

ACS, Inc.

14,000,000

2.10%

Prescription Solutions

12,204,703

1.83%

RxStrategies, Inc.

12,000,000

1.80%

RESTAT, LLC

12,000,000

1.80%

ScriptSave

12,000,000

1.80%

Aetna Pharmacy Management (APM)

11,000,000

1.65%

First Health Services Corporation

10,000,000

1.50%

Walgreens Health Services Division

9,700,000

1.45%

Acro Pharmaceutical Services

7,000,000

1.05%

CIGNA Pharmacy Management

6,500,000

0.97%

Catalyst Rx

6,482,981

0.97%

Axium Healthcare Pharmacy, Inc.

6,000,000

0.90%

SXC Health Solutions, Inc./informedRx

5,500,000

0.82%

Sanovia Corporation

5,000,000

0.75%

SOURCE: Atlantic Information Services' (AIS) exclusive quarterly survey of pharmacy benefit management companies conducted by Drug Benefit News during the 3rd quarter of 2010.

METHODOLOGY: Survey conducted by AIS researchers and supplemented by publicly available information sources. Survey includes companies that describe themselves as PBMs, pharmacy benefit administrators, specialty pharmacy providers and others providing pharmacy benefit services. Membership=lives covered under any/all pharmacy benefit contracts served by the company; members may be served by multiple contracts held by a single company or by multiple companies, and so may be counted more than once. Company market shares calculated as percentage of total industry-wide membership identified in this database.