| Rank | Company | Location | Web site | 2003 sales/revenues rounded, millions of $ |
| 1 | 3M Health Information Systems |
Murray, Utah | www.3m.com/us/healthcare/his | 18.2 billion |
| 2 | The Greeley Co. | Marblehead, Mass. | www.greeley.com | $34.0 |
| 3 | iLiant Corp. | Tampa, Fla. | www.iliant.com | $25.1 |
| 4 | Cross Country Cousulting | Norcross, GA | www.crosscountryconsulting.com | $5.5 |
| 5 | HP3 Inc. | Bethlehem, Pa. | www.hp3.com | $5.1 |
| 6 | GroupOne HealthSource | Jefferson City, Mo. |
www.consultphc.com | $5.0 |
| 7 | MC Stategies Inc. | Atlanta | www.mcstrategies.com | $4.8 |
| 8 | Beacon Partners Inc. | Weymouth, Mass. | www.beaconpartners.com | $4.5 |
| 9 | MedaPhase | San Antonio | www.medaphase.com | $3.2 |
| 10 | Compliance Concepts Inc. | Wexford, Pa. | www.complianceconcepts.com | $3.1 |
| 11 | Bill Dunbar and Associates LLC | Indianapolis | www.billdunbar.com | $3.0 |
| 12 | Hooper Cornell PLLC |
Boise, Idaho | www.hoopercornell.com | $2.3 |
| 13 | Sinalko Healthcare Consulting |
Los Angeles | www.sinaikohc.com | $2.2 |
| 14 | Strategic Management Systems Inc. | Alexandria, Va. | www.strategicm.com | $1.8 |
| 15 | The Horizon Group Ltd. |
Virginia Beach, Va. | www.medgroupstrategy.com | $1.7 |
Source: Phelps Research Top ^