| # | Provider | Specialty | State | Payments | Services | Avg/Service |
|---|---|---|---|---|---|---|
| 1 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $15.4M | 1.5M | $10.33 |
| 2 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NJ | $12.0M | 1.2M | $10.32 |
| 3 | Quest Diagnostics Incorporated | Clinical Laboratory | NJ | $9.2M | 892.7K | $10.35 |
| 4 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $8.6M | 832.5K | $10.35 |
| 5 | Unilab Corporation | Clinical Laboratory | CA | $7.0M | 678.4K | $10.35 |
| 6 | Laboratory Corporation Of America Holdings | Clinical Laboratory | AL | $6.0M | 583.0K | $10.28 |
| 7 | Laboratory Corporation Of America Holdings | Clinical Laboratory | OH | $5.4M | 518.8K | $10.33 |
| 8 | Laboratory Corporation Of America | Clinical Laboratory | CA | $5.2M | 498.0K | $10.35 |
| 9 | Sonora Quest Laboratories Llc | Clinical Laboratory | AZ | $5.0M | 485.7K | $10.33 |
| 10 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | GA | $4.6M | 442.6K | $10.35 |
| 11 | Clinical Pathology Laboratories, Inc. | Clinical Laboratory | TX | $4.5M | 437.9K | $10.35 |
| 12 | Unilab Corporation | Clinical Laboratory | CA | $4.3M | 415.2K | $10.35 |
| 13 | Laboratory Corporation Of America | Clinical Laboratory | FL | $4.1M | 397.1K | $10.32 |
| 14 | Labone Llc | Clinical Laboratory | KS | $3.7M | 353.5K | $10.35 |
| 15 | Northwell Health Laboratories | Clinical Laboratory | NY | $3.5M | 342.7K | $10.35 |
| 16 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $3.5M | 341.2K | $10.35 |
| 17 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $3.5M | 333.4K | $10.35 |
| 18 | Quest Diagnostics Llc Il | Clinical Laboratory | IL | $3.4M | 327.0K | $10.35 |
| 19 | Laboratory Corporation Of America | Clinical Laboratory | TX | $3.1M | 304.5K | $10.32 |
| 20 | Laboratory Corporation Of America | Clinical Laboratory | AZ | $3.0M | 287.2K | $10.35 |
| 21 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $2.9M | 284.0K | $10.35 |
| 22 | Bioreference Health, Llc | Clinical Laboratory | NJ | $2.7M | 262.1K | $10.34 |
| 23 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.6M | 249.2K | $10.33 |
| 24 | Sunrise Medical Laboratories, Inc. | Clinical Laboratory | NY | $2.5M | 242.6K | $10.35 |
| 25 | Pathgroup Labs, Llc | Clinical Laboratory | NC | $2.5M | 242.4K | $10.33 |
| State | Payments | Services | Providers | Avg/Provider |
|---|---|---|---|---|
| FL | $30.5M | 2.9M | 1.4K | $21.3K |
| CA | $28.7M | 2.8M | 952 | $30.1K |
| NJ | $28.5M | 2.8M | 561 | $50.8K |
| TX | $28.0M | 2.7M | 2.6K | $10.6K |
| NC | $23.1M | 2.2M | 1.4K | $16.5K |
| NY | $13.5M | 1.3M | 2.0K | $6.9K |
| AZ | $10.3M | 1.0M | 616 | $16.8K |
| OH | $10.2M | 991.8K | 522 | $19.6K |
| AL | $8.9M | 861.2K | 674 | $13.1K |
| IL | $7.6M | 733.7K | 810 | $9.4K |
| GA | $7.5M | 726.7K | 772 | $9.7K |
| TN | $6.9M | 674.6K | 1.6K | $4.3K |
| KS | $6.4M | 622.5K | 346 | $18.6K |
| VA | $6.1M | 591.9K | 752 | $8.1K |
| MD | $5.7M | 547.9K | 433 | $13.1K |
| MA | $5.3M | 515.7K | 688 | $7.8K |
| WA | $5.1M | 493.3K | 739 | $6.9K |
| PA | $4.7M | 450.4K | 216 | $21.6K |
| OK | $3.5M | 335.8K | 280 | $12.4K |
| WI | $2.9M | 278.8K | 454 | $6.3K |
| CO | $2.5M | 238.3K | 247 | $10.0K |
| SC | $2.4M | 230.2K | 361 | $6.6K |
| NV | $2.3M | 222.0K | 103 | $22.2K |
| MO | $2.2M | 216.9K | 574 | $3.9K |
| AR | $2.2M | 213.2K | 499 | $4.4K |
| OR | $2.1M | 204.7K | 485 | $4.4K |
| MI | $2.0M | 196.2K | 360 | $5.6K |
| LA | $2.0M | 195.1K | 423 | $4.8K |
| MS | $2.0M | 192.8K | 519 | $3.8K |
| IN | $2.0M | 190.6K | 232 | $8.5K |
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.