Certificate of Accreditation
14,689 laboratories hold this certificate in the CMS file for Q2 2026.
What it allows
Issued to a laboratory that performs moderate or high complexity testing on the basis of its accreditation by an accreditation organization approved by CMS.
A certificate says which tests a laboratory may perform. It does not grade the laboratory.
Who holds it
| Facility type | Active laboratories |
|---|---|
| Hospital | 5,168 |
| Physician Office | 3,940 |
| Independent Laboratory | 1,950 |
| Other | 1,846 |
| Ancillary Test Site | 539 |
| Community Clinic | 317 |
| Blood Bank | 227 |
| Ambulatory Surgery Center | 188 |
| Health Maintenance Organization | 88 |
| Federally Qualified Health Center | 86 |
| Other Practitioner | 84 |
| Rural Health Clinic | 57 |
Accreditation organizations
| Organization reported by the laboratory | Confirmed in the file | Not confirmed |
|---|---|---|
| A2LA | 7 | 6 |
| AABB | 235 | 9 |
| AOA | 185 | 2 |
| ASHI | 118 | 2 |
| College of American Pathologists (CAP) | 7,048 | 346 |
| COLA | 5,322 | 511 |
| The Joint Commission | 2,542 | 770 |
Active laboratories of any certificate type that report the organization on their application. One laboratory can report several.
By state
| State or territory | Active laboratories |
|---|---|
| Alabama | 291 |
| Alaska | 47 |
| Arizona | 314 |
| Arkansas | 151 |
| California | 1,155 |
| Colorado | 250 |
| Connecticut | 103 |
| Delaware | 37 |
| District of Columbia | 28 |
| Florida | 1,177 |
| Georgia | 476 |
| Guam | 2 |
| Hawaii | 43 |
| Idaho | 57 |
| Illinois | 503 |
| Indiana | 331 |
| Iowa | 124 |
| Kansas | 136 |
| Kentucky | 184 |
| Louisiana | 356 |
| Maine | 40 |
| Maryland | 220 |
| Massachusetts | 249 |
| Michigan | 402 |
| Minnesota | 434 |
| Mississippi | 132 |
| Missouri | 212 |
| Montana | 52 |
| Nebraska | 86 |
| Nevada | 133 |
| New Hampshire | 44 |
| New Jersey | 257 |
| New Mexico | 104 |
| New York | 85 |
| North Carolina | 652 |
| North Dakota | 72 |
| Ohio | 588 |
| Oklahoma | 273 |
| Oregon | 135 |
| Pennsylvania | 440 |
| Puerto Rico | 75 |
| Rhode Island | 27 |
| South Carolina | 342 |
| South Dakota | 110 |
| Tennessee | 323 |
| Texas | 2,254 |
| U.S. Virgin Islands | 4 |
| Utah | 153 |
| Vermont | 25 |
| Virginia | 368 |
| Washington | 178 |
| West Virginia | 63 |
| Wisconsin | 280 |
| Wyoming | 39 |