Quest Diagnostics LLC
Quest Diagnostics LLC is a healthcare organization registered as Clinical Medical Laboratory in Prospect, CT, holding Type 2 (organization) NPI 1548462070 since 2007. The authorized official on file is Charles Bowles, Vice President.
✓ Active NPI ✓ Valid NPI checksum Organization subpart
| NPI | 1548462070 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Quest Diagnostics LLC |
| Parent organization | Quest Diagnostics Incorporated |
| Practice address | 166 WATERBURY RD, Prospect, CT, 06712 |
| Phone | 8778682191 |
| Enumeration date | 2007-06-05 |
| Last updated in NPPES | 2022-11-08 |
Authorized official
| Name | Charles Bowles |
|---|---|
| Title | Vice President |
| Phone | 6104544122 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 291U00000X | Clinical Medical Laboratory | Primary | 07D0097260 | CT |
Copy-ready billing details
Provider: Quest Diagnostics LLC NPI: 1548462070 Taxonomy: 291U00000X (Clinical Medical Laboratory) Address: 166 WATERBURY RD, Prospect, CT, 06712
Verify this record
Cross-check NPI 1548462070 against the authoritative CMS record: view Quest Diagnostics LLC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What is a Type 2 NPI?
What type of organization is Quest Diagnostics LLC?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2022-11-08.