Quest Diagnostics Incorporated Md
Quest Diagnostics Incorporated Md holds 8 active organization NPIs in the federal registry, with practice locations in 8 cities in 3 states. All list clinical medical laboratory as their primary taxonomy; each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPIBaltimore, MD has the most NPIs, 1
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2007
Source: CMS NPPES, enumeration dates.
4 NPIs were issued in 2006 alone, more than in any other year; none in 15 of the years between.
Baltimore, MD locations
The city with the most Quest Diagnostics Incorporated Md NPIs. The full list of all 8 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1245307818 | 1715 TWIN SPRINGS RD, Baltimore, MD | Clinical Medical Laboratory | Nov 29, 2006 |
All 8 locations, by state and city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1245307818 | 1715 TWIN SPRINGS RD, Baltimore, MD | Clinical Medical Laboratory | Nov 29, 2006 |
| 1952329906 | 5454 WISCONSIN AVE SUITE 1335, Chevy Chase, MD | Clinical Medical Laboratory | Jul 18, 2006 |
| 1386662336 | 305 HOSPITAL DR FL 2, Glen Burnie, MD | Clinical Medical Laboratory | Jul 18, 2006 |
| 1407503485 | 10755 FALLS RD STE 200, Lutherville, MD | Clinical Medical Laboratory | Mar 9, 2022 |
| 1467676445 | 15225 SHADY GROVE RD STE 207, Rockville, MD | Clinical Medical Laboratory | Apr 12, 2007 |
| 1851319800 | 6064 ARLINGTON BLVD, Falls Church, VA | Clinical Medical Laboratory | Jul 18, 2006 |
| 1265314074 | 11740 W BROAD ST STE B104, Henrico, VA | Clinical Medical Laboratory | Jul 23, 2025 |
| 1730577206 | 99 TAVERN RD, Martinsburg, WV | Clinical Medical Laboratory | Jan 6, 2015 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Quest Diagnostics Incorporated Md have 8 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Quest Diagnostics Incorporated Md's NPIs list practice locations in 8 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.