Registry data as of Aug 27, 2026

Quest Diagnostics Incorporated

Quest Diagnostics Incorporated holds 31 active organization NPIs in the federal registry, with practice locations in 28 cities in 14 states. All list clinical medical laboratory as their primary taxonomy; each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

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Find a location's NPI

Brookline, MA has the most NPIs, 2

  1. Brookline, MA2
  2. Nashua, NH2
  3. Mount Kisco, NY2
  4. Downey, CA1
  5. Largo, FL1
  6. Atlanta, GA1
  7. Moline, IL1
  8. Attleboro, MA1

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2006 and 2007

Quest Diagnostics Incorporated NPIs by year issued2006: 19, 2007: 4, 2008: 0, 2009: 4, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 1, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 1, 2025: 20510152020072009201120132015201720192021202320252006: 1944112
Quest Diagnostics Incorporated NPIs by year issued2006: 19, 2007: 4, 2008: 0, 2009: 4, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 1, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 1, 2025: 20510152020072009201120132015201720192021202320252006: 1944112
Quest Diagnostics Incorporated NPIs by year issued2006: 19, 2007: 4, 2008: 0, 2009: 4, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 1, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 1, 2025: 20510152020072010201320162019202220252006: 194

Source: CMS NPPES, enumeration dates.

19 NPIs were issued in 2006 alone, more than in any other year; none in 14 of the years between.

Brookline, MA locations

The city with the most Quest Diagnostics Incorporated NPIs. The full list of all 31 follows.

NPILocationPrimary taxonomyIssued
14573794141180 BEACON ST STE D, Brookline, MAClinical Medical LaboratoryJul 18, 2006
18011252571 BROOKLINE PL STE 301, Brookline, MAClinical Medical LaboratoryDec 14, 2009
All 31 locations, by state and city
NPILocationPrimary taxonomyIssued
138678363711411 S BROOKSHIRE AVE STE 203, Downey, CAClinical Medical LaboratoryFeb 5, 2007
11043980801301 2ND AVE SW FL 5, Largo, FLClinical Medical LaboratoryDec 17, 2018
16797720083175 PRESIDENTIAL DR, Atlanta, GAClinical Medical LaboratoryJul 16, 2007
1558389510800 36TH AVE STE 101, Moline, ILClinical Medical LaboratoryJul 18, 2006
1396763900687 N MAIN ST, Attleboro, MAClinical Medical LaboratoryJul 18, 2006
14573794141180 BEACON ST STE D, Brookline, MAClinical Medical LaboratoryJul 18, 2006
18011252571 BROOKLINE PL STE 301, Brookline, MAClinical Medical LaboratoryDec 14, 2009
11341477471030 PRESIDENT AVE, Fall River, MAClinical Medical LaboratoryJul 18, 2006
19523295759707 MEDICAL CENTER DR SUITE 220, Rockville, MDClinical Medical LaboratoryJul 18, 2006
1750309704G1071 N BALLENGER HWY, Flint, MIClinical Medical LaboratoryJul 18, 2006
15384931271295 BARRY DR STE C, Lapeer, MIClinical Medical LaboratorySep 29, 2009
131696536141700 6 MILE RD, Northville, MIClinical Medical LaboratoryJul 18, 2006
157858200317550 W 12 MILE RD, Southfield, MIClinical Medical LaboratoryJul 18, 2006
1275551236280 PLEASANT ST, Concord, NHClinical Medical LaboratoryJul 18, 2006
1538189725100 HITCHCOCK WAY, Manchester, NHClinical Medical LaboratoryJul 20, 2006
1265450985294 DANIEL WEBSTER HWY, Merrimack, NHClinical Medical LaboratoryJul 18, 2006
139676500414 ARMORY RD, Milford, NHClinical Medical LaboratoryJul 19, 2006
1487672036591 W HOLLIS ST, Nashua, NHClinical Medical LaboratoryJul 18, 2006
172000645521 EAST HOLLIS ST, Nashua, NHClinical Medical LaboratoryJul 18, 2006
19321457781 INSIGHTS DR, Clifton, NJClinical Medical LaboratoryJun 21, 2006
10432568864230 SOUTH BURNHAM AVE, Las Vegas, NVClinical Medical LaboratoryJun 21, 2006
11745411302375 E PRATER WAY, Sparks, NVClinical Medical LaboratoryJul 18, 2006
1265202147501 NEW KARNER RD, Albany, NYClinical Medical LaboratoryJan 3, 2024
137678103983 S BEDFORD RD, Mount Kisco, NYClinical Medical LaboratoryFeb 3, 2009
1730982109110 S BEDFORD RD STE A, Mount Kisco, NYClinical Medical LaboratoryMar 31, 2025
14674704271651 3RD AVE FL 2, New York, NYClinical Medical LaboratoryJul 18, 2006
14677805691200 COLLEGEVILLE RD, Collegeville, PAClinical Medical LaboratoryDec 1, 2009
1811036833875 GREENTREE RD, Pittsburgh, PAClinical Medical LaboratoryFeb 6, 2007
172000678650 MEMORIAL BLVD, Newport, RIClinical Medical LaboratoryJul 18, 2006
1356496749303 BUTLER FARM RD STE 116, Hampton, VAClinical Medical LaboratoryJan 24, 2007
16096763521807 HUGUENOT RD STE 122, Midlothian, VAClinical Medical LaboratoryMar 13, 2025

Related names

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does Quest Diagnostics Incorporated have 31 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's NPIs list practice locations in 28 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.