| # | Provider | Specialty | State | Payments | Services | Avg/Service |
|---|---|---|---|---|---|---|
| 1 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $12.6M | 764.9K | $16.45 |
| 2 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NJ | $10.7M | 650.1K | $16.45 |
| 3 | Quest Diagnostics Incorporated | Clinical Laboratory | NJ | $8.4M | 510.0K | $16.45 |
| 4 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $8.1M | 493.0K | $16.46 |
| 5 | Unilab Corporation | Clinical Laboratory | CA | $5.9M | 359.4K | $16.46 |
| 6 | Laboratory Corporation Of America Holdings | Clinical Laboratory | AL | $5.0M | 301.1K | $16.44 |
| 7 | Laboratory Corporation Of America Holdings | Clinical Laboratory | OH | $4.7M | 285.9K | $16.45 |
| 8 | Laboratory Corporation Of America | Clinical Laboratory | CA | $4.4M | 267.7K | $16.46 |
| 9 | Labone Llc | Clinical Laboratory | KS | $4.0M | 243.9K | $16.46 |
| 10 | Clinical Pathology Laboratories, Inc. | Clinical Laboratory | TX | $4.0M | 243.6K | $16.45 |
| 11 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | GA | $3.9M | 238.2K | $16.46 |
| 12 | Laboratory Corporation Of America | Clinical Laboratory | FL | $3.9M | 235.2K | $16.46 |
| 13 | Sonora Quest Laboratories Llc | Clinical Laboratory | AZ | $3.7M | 227.2K | $16.45 |
| 14 | Unilab Corporation | Clinical Laboratory | CA | $3.4M | 206.4K | $16.46 |
| 15 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $3.3M | 200.2K | $16.46 |
| 16 | Quest Diagnostics Llc Il | Clinical Laboratory | IL | $3.1M | 189.4K | $16.46 |
| 17 | Northwell Health Laboratories | Clinical Laboratory | NY | $3.0M | 181.7K | $16.46 |
| 18 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $2.9M | 177.6K | $16.46 |
| 19 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.7M | 165.2K | $16.43 |
| 20 | Laboratory Corporation Of America | Clinical Laboratory | AZ | $2.6M | 156.4K | $16.46 |
| 21 | Sunrise Medical Laboratories, Inc. | Clinical Laboratory | NY | $2.5M | 148.9K | $16.45 |
| 22 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $2.4M | 143.9K | $16.46 |
| 23 | Pathgroup Labs, Llc | Clinical Laboratory | NC | $2.2M | 136.4K | $16.45 |
| 24 | Laboratory Corporation Of America | Clinical Laboratory | TX | $2.1M | 128.9K | $16.45 |
| 25 | Quest Diagnostics Incorporated Md | Clinical Laboratory | MD | $2.0M | 124.0K | $16.46 |
| State | Payments | Services | Providers | Avg/Provider |
|---|---|---|---|---|
| FL | $25.4M | 1.5M | 1.2K | $20.9K |
| NJ | $24.9M | 1.5M | 380 | $65.5K |
| CA | $24.5M | 1.5M | 622 | $39.4K |
| TX | $21.8M | 1.3M | 1.7K | $12.9K |
| NC | $19.6M | 1.2M | 1.1K | $18.0K |
| NY | $11.9M | 721.0K | 1.5K | $7.9K |
| OH | $8.6M | 523.8K | 455 | $18.9K |
| AZ | $8.1M | 493.5K | 443 | $18.3K |
| AL | $6.8M | 417.0K | 561 | $12.2K |
| GA | $6.3M | 383.1K | 593 | $10.6K |
| KS | $6.2M | 377.4K | 267 | $23.3K |
| IL | $5.9M | 356.9K | 533 | $11.0K |
| MA | $5.4M | 326.3K | 652 | $8.2K |
| TN | $5.2M | 316.9K | 1.4K | $3.8K |
| VA | $4.5M | 274.2K | 613 | $7.3K |
| MD | $3.9M | 235.1K | 319 | $12.1K |
| WA | $3.8M | 234.3K | 482 | $8.0K |
| PA | $3.6M | 221.2K | 188 | $19.4K |
| OK | $2.4M | 146.9K | 170 | $14.2K |
| SC | $2.3M | 138.1K | 339 | $6.7K |
| WI | $2.1M | 125.5K | 333 | $6.2K |
| CO | $1.9M | 118.0K | 204 | $9.5K |
| MI | $1.9M | 113.1K | 301 | $6.2K |
| NV | $1.7M | 106.0K | 77 | $22.7K |
| IN | $1.6M | 97.5K | 186 | $8.6K |
| LA | $1.6M | 94.6K | 304 | $5.1K |
| OR | $1.5M | 94.2K | 336 | $4.6K |
| KY | $1.4M | 83.1K | 202 | $6.8K |
| MS | $1.3M | 78.0K | 282 | $4.5K |
| MN | $1.3M | 77.8K | 930 | $1.4K |
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.