| # | Provider | Specialty | State | Payments | Services | Avg/Service |
|---|---|---|---|---|---|---|
| 1 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $14.9M | 1.8M | $8.39 |
| 2 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NJ | $11.4M | 1.4M | $8.38 |
| 3 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $7.7M | 913.4K | $8.40 |
| 4 | Quest Diagnostics Incorporated | Clinical Laboratory | NJ | $6.7M | 794.5K | $8.40 |
| 5 | Unilab Corporation | Clinical Laboratory | CA | $6.0M | 717.6K | $8.39 |
| 6 | Sonora Quest Laboratories Llc | Clinical Laboratory | AZ | $5.1M | 610.1K | $8.38 |
| 7 | Laboratory Corporation Of America | Clinical Laboratory | CA | $5.0M | 591.7K | $8.40 |
| 8 | Laboratory Corporation Of America Holdings | Clinical Laboratory | AL | $4.7M | 558.6K | $8.33 |
| 9 | Laboratory Corporation Of America Holdings | Clinical Laboratory | OH | $4.6M | 551.2K | $8.38 |
| 10 | Unilab Corporation | Clinical Laboratory | CA | $4.5M | 539.2K | $8.40 |
| 11 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $4.2M | 501.2K | $8.39 |
| 12 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | GA | $4.0M | 477.6K | $8.40 |
| 13 | Clinical Pathology Laboratories, Inc. | Clinical Laboratory | TX | $3.9M | 480.2K | $8.22 |
| 14 | Labone Llc | Clinical Laboratory | KS | $3.3M | 394.7K | $8.40 |
| 15 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $3.1M | 364.7K | $8.38 |
| 16 | Laboratory Corporation Of America | Clinical Laboratory | FL | $3.0M | 353.2K | $8.40 |
| 17 | Quest Diagnostics Llc Il | Clinical Laboratory | IL | $2.9M | 350.3K | $8.39 |
| 18 | Laboratory Corporation Of America | Clinical Laboratory | AZ | $2.9M | 342.7K | $8.35 |
| 19 | Laboratory Corporation Of America | Clinical Laboratory | WA | $2.6M | 313.7K | $8.40 |
| 20 | Quest Diagnostics Incorporated Md | Clinical Laboratory | MD | $2.5M | 297.8K | $8.40 |
| 21 | Quest Diagnostics Massachusetts Llc | Clinical Laboratory | MA | $2.5M | 294.1K | $8.40 |
| 22 | Quest Diagnostics Llc | Clinical Laboratory | MA | $2.4M | 283.2K | $8.37 |
| 23 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.3M | 278.5K | $8.39 |
| 24 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.3M | 275.3K | $8.39 |
| 25 | Derek Welch | Pathology | TN | $2.3M | 269.6K | $8.38 |
| State | Payments | Services | Providers | Avg/Provider |
|---|---|---|---|---|
| CA | $33.6M | 4.1M | 4.5K | $7.4K |
| FL | $30.0M | 3.7M | 6.0K | $5.0K |
| TX | $28.0M | 3.4M | 6.3K | $4.5K |
| NJ | $24.4M | 3.0M | 2.2K | $11.1K |
| NC | $22.5M | 2.7M | 3.5K | $6.4K |
| NY | $18.4M | 2.3M | 8.1K | $2.3K |
| AZ | $11.8M | 1.5M | 1.4K | $8.2K |
| IL | $11.1M | 1.4M | 4.2K | $2.7K |
| TN | $10.6M | 1.3M | 3.3K | $3.2K |
| OH | $10.3M | 1.2M | 1.9K | $5.4K |
| MA | $9.9M | 1.2M | 2.1K | $4.6K |
| GA | $9.6M | 1.2M | 3.0K | $3.2K |
| VA | $7.8M | 979.6K | 2.6K | $3.0K |
| PA | $7.6M | 919.1K | 2.3K | $3.2K |
| AL | $7.5M | 935.2K | 1.5K | $4.8K |
| KS | $6.9M | 835.3K | 1.1K | $6.3K |
| WA | $6.7M | 826.2K | 1.9K | $3.5K |
| MD | $6.1M | 736.0K | 1.4K | $4.3K |
| SC | $5.7M | 704.6K | 2.1K | $2.7K |
| WI | $5.2M | 628.1K | 2.3K | $2.3K |
| MN | $5.2M | 630.1K | 3.5K | $1.5K |
| IN | $3.9M | 469.2K | 1.7K | $2.2K |
| MS | $3.9M | 478.7K | 1.6K | $2.4K |
| OK | $3.5M | 449.9K | 1.0K | $3.4K |
| IA | $3.5M | 421.6K | 1.4K | $2.4K |
| AR | $3.3M | 415.6K | 1.3K | $2.5K |
| MI | $3.0M | 384.8K | 1.9K | $1.6K |
| CO | $3.0M | 364.4K | 1.0K | $2.8K |
| MO | $3.0M | 363.0K | 1.6K | $1.9K |
| LA | $2.6M | 321.3K | 799 | $3.2K |
Last Updated: February 2026 (data through 2023, the latest CMS release)
Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.