| Preferred Provider | AMERIPATH CINCINNATI INC | AMERIPATH CINCINNATI INC |
| Preferred Provider | AMERIPATH CLEVELAND INC | AMERIPATH CLEVELAND INC |
| Preferred Provider | AMERIPATH FLORIDA LLC | AMERIPATH FLORIDA LLC |
| Preferred Provider | AMERIPATH INDIANAPOLIS PC | AMERIPATH INDIANAPOLIS PC |
| Preferred Provider | AMERIPATH KENTUCKY INC | AMERIPATH KENTUCKY INC |
| Preferred Provider | AMERIPATH LUBBOCK 501A CORPORATION | AMERIPATH LUBBOCK 501A CORPORATION |
| Preferred Provider | AMERIPATH NEW YORK LLC | AMERIPATH NEW YORK LLC |
| Preferred Provider | AMERIPATH TEXAS INC | AMERIPATH TEXAS INC |
| Preferred Provider | AMERIPATH TUCSON INC | AMERIPATH TUCSON INC |
| Preferred Provider | COLORADO PATHOLOGY CONSULTANTS PC | COLORADO PATHOLOGY CONSULTANTS PC |
| Preferred Provider | DERMATOPATHOLOGY OF WISCONSIN SC | DERMATOPATHOLOGY OF WISCONSIN SC |
| Preferred Provider | DIAGNOSTIC PATHOLOGY SERVICES, INC. | DIAGNOSTIC PATHOLOGY SERVICES, INC. |
| Preferred Provider | INSTITUTE FOR DERMATOPATHOLOGY INC | INSTITUTE FOR DERMATOPATHOLOGY INC |
| Preferred Provider | OCMULGEE MEDICAL PATHOLOGY ASSOCIATION INC | OCMULGEE MEDICAL PATHOLOGY ASSOCIATION INC |
| Preferred Provider | PHENOPATH LABORATORIES PLLC | PHENOPATH LABORATORIES PLLC |
| Preferred Provider | CLEVELAND HEARTLAB INC | CLEVELAND HEARTLAB INC |
| Preferred Provider | MED FUSION LLC | MED FUSION LLC |
| Preferred Provider | QUEST DIAGNOSTICS NICHOLS INSTITUTE | QUEST DIAGNOSTICS NICHOLS INSTITUTE |
| Preferred Provider | QUEST DIAGNOSTICS NICHOLS INSTITUTE, INC. | QUEST DIAGNOSTICS NICHOLS INSTITUTE, INC. |
| Preferred Provider | SPECIALTY LABORATORIES INC | SPECIALTY LABORATORIES INC |
| Preferred Provider | HOFFMAN, MD, ASSOCIATED PATHOLOGISTS CHARTERED | HOFFMAN, MD, ASSOCIATED PATHOLOGISTS CHARTERED |
| Preferred Provider | LABONE LLC | LABONE LLC |
| Preferred Provider | LABONE OF OHIO INC | LABONE OF OHIO INC |
| Preferred Provider | QUEST DIAGNOSTICS CLINICAL LABORATORIES INC | QUEST DIAGNOSTICS CLINICAL LABORATORIES INC |
| Preferred Provider | QUEST DIAGNOSTICS INCORPORATED | QUEST DIAGNOSTICS INCORPORATED |
| Preferred Provider | QUEST DIAGNOSTICS INCORPORATED MD | QUEST DIAGNOSTICS INCORPORATED MD |
| Preferred Provider | QUEST DIAGNOSTICS LLC IL | QUEST DIAGNOSTICS LLC IL |
| Preferred Provider | QUEST DIAGNOSTICS LLC | QUEST DIAGNOSTICS LLC |
| Preferred Provider | QUEST DIAGNOSTICS MASSACHUSETTS LLC | QUEST DIAGNOSTICS MASSACHUSETTS LLC |
| Preferred Provider | QUEST DIAGNOSTICS OF PENNSYLVANIA INC. | QUEST DIAGNOSTICS OF PENNSYLVANIA INC. |
| Preferred Provider | QUEST DIAGNOSTICS TB LLC | QUEST DIAGNOSTICS TB LLC |
| Preferred Provider | UNILAB CORPORATION | UNILAB CORPORATION |
| Preferred Provider | ASSOCIATED CLINICAL LABORATORIES | ASSOCIATED CLINICAL LABORATORIES |
| Preferred Provider | DIAGNOSTIC LABORATORY OF OKLAHOMA LLC | DIAGNOSTIC LABORATORY OF OKLAHOMA LLC |
| Preferred Provider | QUEST DIAGNOSTICS VENTURE LLC | QUEST DIAGNOSTICS VENTURE LLC |
