| # | Provider | Specialty | State | Payments | Services | Avg/Service |
|---|---|---|---|---|---|---|
| 1 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $13.8M | 1.1M | $13.10 |
| 2 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NJ | $10.9M | 828.9K | $13.11 |
| 3 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $8.4M | 638.2K | $13.12 |
| 4 | Quest Diagnostics Incorporated | Clinical Laboratory | NJ | $8.3M | 633.4K | $13.12 |
| 5 | Unilab Corporation | Clinical Laboratory | CA | $5.9M | 450.6K | $13.11 |
| 6 | Laboratory Corporation Of America Holdings | Clinical Laboratory | AL | $5.2M | 396.4K | $13.08 |
| 7 | Laboratory Corporation Of America Holdings | Clinical Laboratory | OH | $4.7M | 360.9K | $13.10 |
| 8 | Laboratory Corporation Of America | Clinical Laboratory | CA | $4.6M | 347.4K | $13.11 |
| 9 | Laboratory Corporation Of America | Clinical Laboratory | FL | $4.0M | 307.2K | $13.11 |
| 10 | Clinical Pathology Laboratories, Inc. | Clinical Laboratory | TX | $3.9M | 300.0K | $13.12 |
| 11 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | GA | $3.9M | 295.6K | $13.12 |
| 12 | Unilab Corporation | Clinical Laboratory | CA | $3.7M | 283.0K | $13.12 |
| 13 | Sonora Quest Laboratories Llc | Clinical Laboratory | AZ | $3.5M | 267.2K | $13.09 |
| 14 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $3.3M | 253.3K | $13.12 |
| 15 | Labone Llc | Clinical Laboratory | KS | $3.2M | 240.7K | $13.12 |
| 16 | Quest Diagnostics Llc Il | Clinical Laboratory | IL | $3.1M | 239.5K | $13.12 |
| 17 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $2.8M | 212.2K | $13.12 |
| 18 | Northwell Health Laboratories | Clinical Laboratory | NY | $2.6M | 199.2K | $13.12 |
| 19 | Laboratory Corporation Of America | Clinical Laboratory | AZ | $2.5M | 192.7K | $13.12 |
| 20 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.5M | 190.1K | $13.08 |
| 21 | Sunrise Medical Laboratories, Inc. | Clinical Laboratory | NY | $2.3M | 177.7K | $13.11 |
| 22 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $2.3M | 177.3K | $13.12 |
| 23 | Quest Diagnostics Incorporated Md | Clinical Laboratory | MD | $2.2M | 166.3K | $13.12 |
| 24 | Pathgroup Labs, Llc | Clinical Laboratory | NC | $2.2M | 166.6K | $13.09 |
| 25 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.1M | 164.1K | $13.10 |
| State | Payments | Services | Providers | Avg/Provider |
|---|---|---|---|---|
| CA | $24.7M | 1.9M | 699 | $35.3K |
| FL | $24.1M | 1.8M | 1.2K | $19.4K |
| NJ | $23.9M | 1.8M | 366 | $65.4K |
| TX | $20.8M | 1.6M | 1.8K | $11.6K |
| NC | $20.7M | 1.6M | 1.2K | $17.4K |
| NY | $10.7M | 815.9K | 1.5K | $7.3K |
| OH | $8.6M | 655.1K | 476 | $18.0K |
| AZ | $7.7M | 584.5K | 529 | $14.5K |
| AL | $7.1M | 546.5K | 592 | $12.1K |
| GA | $6.3M | 483.2K | 642 | $9.9K |
| MA | $5.8M | 442.8K | 718 | $8.1K |
| IL | $5.7M | 436.1K | 567 | $10.1K |
| TN | $5.4M | 413.0K | 1.3K | $4.1K |
| VA | $5.1M | 390.2K | 632 | $8.1K |
| KS | $5.1M | 386.6K | 289 | $17.5K |
| MD | $4.2M | 317.2K | 291 | $14.3K |
| WA | $3.8M | 292.4K | 530 | $7.2K |
| PA | $3.6M | 272.5K | 178 | $20.1K |
| WI | $2.7M | 205.5K | 530 | $5.1K |
| SC | $2.5M | 191.7K | 371 | $6.7K |
| OK | $2.5M | 188.0K | 214 | $11.5K |
| MS | $2.0M | 154.2K | 526 | $3.8K |
| CO | $1.7M | 131.3K | 190 | $9.1K |
| IN | $1.7M | 130.2K | 232 | $7.3K |
| LA | $1.6M | 120.4K | 365 | $4.3K |
| HI | $1.6M | 119.9K | 11 | $142.4K |
| OR | $1.5M | 118.8K | 347 | $4.5K |
| NV | $1.5M | 117.8K | 47 | $32.8K |
| MO | $1.5M | 116.5K | 504 | $3.0K |
| MI | $1.5M | 116.1K | 331 | $4.6K |
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.