Quest Diagnostics Clinical Laboratories Inc
NPI 1265562474 · Clinical Medical Laboratory · Saint Louis, MO
Quest Diagnostics Clinical Laboratories Inc is a Clinical Medical Laboratory organization in Saint Louis, MO (NPI 1265562474).
Provider details
- NPI number
- 1265562474
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Parent organization
- Quest Diagnostics Incorporated
- Organization subpart
- Yes
- Authorized official
- G Cartier, Vp of Billing(484) 676-7000
Specialties & taxonomies
Laboratories
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-06
- Last updated
- 2008-01-08
Frequently asked questions
- What is Quest Diagnostics Clinical Laboratories Inc's NPI number?
- Quest Diagnostics Clinical Laboratories Inc's National Provider Identifier (NPI) is 1265562474, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Quest Diagnostics Clinical Laboratories Inc?
- Quest Diagnostics Clinical Laboratories Inc is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Quest Diagnostics Clinical Laboratories Inc located?
- Quest Diagnostics Clinical Laboratories Inc's practice location on file with NPPES is 969 N Mason Rd, Saint Louis, MO 63141-6338.
- What is Quest Diagnostics Clinical Laboratories Inc's phone number?
- The practice phone number listed in the NPPES registry for Quest Diagnostics Clinical Laboratories Inc is (314) 996-8811.
- Who is the authorized official for Quest Diagnostics Clinical Laboratories Inc?
- The authorized official listed on Quest Diagnostics Clinical Laboratories Inc's NPPES record is G Cartier, Vp of Billing. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Quest Diagnostics Clinical Laboratories Inc's NPI active?
- Yes — Quest Diagnostics Clinical Laboratories Inc's NPI (1265562474) is active in the NPPES registry as of the last update on 2008-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.