| Harrington Cancer Center | Harrington Cancer Center |
| Texas Tech University Health Sciences Center-Amarillo | Texas Tech University Health Sciences Center-Amarillo |
| Texas Oncology - Amarillo | Texas Oncology - Amarillo |
| Texas Tech University Health Sciences Center School of Medicine | Texas Tech University Health Sciences Center School of Medicine |
| Amarillo Center For Clinical Research | Amarillo Center For Clinical Research |
| Veterans Affairs Medical Center - Amarillo | Veterans Affairs Medical Center - Amarillo |
| PharmaTex Research, LLC | PharmaTex Research, LLC |
| Amarillo Heart Clinical Research Institute Inc. | Amarillo Heart Clinical Research Institute Inc. |
| PharmaTex Research | PharmaTex Research |
| Southwest Retina Specialists | Southwest Retina Specialists |
| Northwest Texas Healthcare System | Northwest Texas Healthcare System |
| Amarillo Medical Specialists, LLP | Amarillo Medical Specialists, LLP |
| Premier Vision | Premier Vision |
| Cardiology Center of Amarillo | Cardiology Center of Amarillo |
| Rush Eye Associates | Rush Eye Associates |
| AAMR Research Clinic | AAMR Research Clinic |
| Panhandle AIDS Support Organization | Panhandle AIDS Support Organization |
| Amarillo Diagnostic Clinic | Amarillo Diagnostic Clinic |
| Panhandle Weight Loss Center | Panhandle Weight Loss Center |
