| # | Provider | Specialty | State | Payments | Services | Avg/Service |
|---|---|---|---|---|---|---|
| 1 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $6.0M | 98.4K | $60.66 |
| 2 | Aegis Sciences Corporation | Clinical Laboratory | TN | $4.0M | 66.1K | $60.72 |
| 3 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NC | $2.5M | 41.9K | $60.17 |
| 4 | Millennium Health, Llc | Clinical Laboratory | CA | $1.9M | 32.1K | $60.71 |
| 5 | Dominion Diagnostics, Llc | Clinical Laboratory | RI | $1.6M | 26.1K | $60.61 |
| 6 | Total Wellness Centers, Llc | Clinical Laboratory | MA | $1.3M | 21.5K | $60.90 |
| 7 | Precision Toxicology, Llc | Clinical Laboratory | CA | $1.1M | 18.3K | $60.74 |
| 8 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | GA | $1.1M | 18.0K | $60.89 |
| 9 | Unilab Corporation | Clinical Laboratory | CA | $1.1M | 18.0K | $60.89 |
| 10 | Ethos Holding Corp | Clinical Laboratory | KY | $1.1M | 17.5K | $60.89 |
| 11 | Quest Diagnostics Incorporated | Clinical Laboratory | NJ | $997.3K | 16.4K | $60.89 |
| 12 | Quest Diagnostics Massachusetts Llc | Clinical Laboratory | MA | $980.6K | 16.1K | $60.90 |
| 13 | Quest Diagnostics Llc Il | Clinical Laboratory | IL | $901.7K | 14.8K | $60.89 |
| 14 | Laboratory Corporation Of America Holdings | Clinical Laboratory | NJ | $854.5K | 14.1K | $60.64 |
| 15 | Unilab Corporation | Clinical Laboratory | CA | $842.8K | 13.9K | $60.79 |
| 16 | Drugscan, Inc. | Clinical Laboratory | PA | $800.5K | 13.2K | $60.61 |
| 17 | National Labs Inc | Clinical Laboratory | CA | $797.0K | 13.1K | $60.85 |
| 18 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | FL | $751.6K | 12.4K | $60.84 |
| 19 | Quest Diagnostics Clinical Laboratories Inc | Clinical Laboratory | TX | $739.6K | 12.7K | $58.34 |
| 20 | Chabado Genomics Inc | Clinical Laboratory | CA | $687.7K | 11.3K | $60.89 |
| 21 | Quest Diagnostics Llc | Clinical Laboratory | MA | $670.8K | 11.0K | $60.79 |
| 22 | Radeas Llc | Clinical Laboratory | NC | $654.0K | 10.7K | $60.90 |
| 23 | Regional Toxicology Services, Llc | Clinical Laboratory | WA | $618.7K | 10.2K | $60.77 |
| 24 | Labone Llc | Clinical Laboratory | KS | $585.3K | 9.6K | $60.80 |
| 25 | Clinical Pathology Laboratories, Inc. | Clinical Laboratory | TX | $548.9K | 9.0K | $60.85 |
| State | Payments | Services | Providers | Avg/Provider |
|---|---|---|---|---|
| NC | $13.4M | 221.7K | 379 | $35.4K |
| TX | $10.9M | 181.2K | 459 | $23.7K |
| CA | $10.7M | 175.6K | 154 | $69.2K |
| TN | $7.4M | 123.0K | 246 | $30.1K |
| FL | $6.9M | 113.7K | 449 | $15.4K |
| GA | $6.1M | 100.7K | 213 | $28.5K |
| NJ | $5.7M | 94.3K | 96 | $59.5K |
| MA | $4.8M | 79.5K | 134 | $36.0K |
| KY | $4.8M | 79.4K | 234 | $20.4K |
| PA | $4.3M | 70.3K | 100 | $42.6K |
| MD | $4.0M | 66.5K | 170 | $23.6K |
| OK | $3.8M | 63.0K | 144 | $26.3K |
| NY | $2.7M | 44.6K | 117 | $23.1K |
| MI | $2.5M | 41.3K | 117 | $21.3K |
| IN | $2.5M | 41.2K | 116 | $21.2K |
| NV | $2.4M | 40.3K | 111 | $21.9K |
| AL | $2.4M | 40.8K | 123 | $19.7K |
| MS | $2.2M | 37.2K | 93 | $24.1K |
| WA | $2.2M | 36.9K | 108 | $20.5K |
| IL | $1.9M | 31.5K | 70 | $27.2K |
| SC | $1.9M | 31.6K | 130 | $14.6K |
| OH | $1.9M | 31.1K | 99 | $18.8K |
| AR | $1.8M | 29.9K | 85 | $21.3K |
| AZ | $1.8M | 29.6K | 152 | $11.7K |
| LA | $1.6M | 26.9K | 90 | $18.0K |
| RI | $1.6M | 26.6K | 6 | $268.7K |
| VA | $933.5K | 15.6K | 43 | $21.7K |
| CO | $757.4K | 12.7K | 55 | $13.8K |
| KS | $750.2K | 12.6K | 16 | $46.9K |
| OR | $723.2K | 12.1K | 53 | $13.6K |
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.