| Item | Obligations |
|---|---|
| OPTUM PUBLIC SECTOR SOLUTIONS, INC. | $19.9B |
| MCKESSON CORPORATION | $12B |
| TRIWEST HEALTHCARE ALLIANCE CORP | $11B |
| QTC MEDICAL SERVICES INC | $2.3B |
| ORACLE HEALTH GOVERNMENT SERVICES, INC. | $2.1B |
| OPTUMSERVE HEALTH SERVICES, INC. | $1.9B |
| LOYAL SOURCE GOVERNMENT SERVICES LLC | $1.8B |
| VETERANS EVALUATION SERVICES, INC | $1.7B |
| MEDLINE INDUSTRIES, LP | $933M |
| V3GATE, LLC | $602M |
OPTUM PUBLIC SECTOR SOLUTIONS, INC. led all Veterans Affairs contractors with $19.9B, 25.0% of obligations.