NPPES file of Aug 9, 2026

Unilab Corporation

Unilab Corporation holds 41 active organization NPIs in the federal registry, with practice locations in 34 California cities. 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 →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Riverside has the most NPIs, 3

  1. Riverside3
  2. Ventura3
  3. Redlands2
  4. Sacramento2
  5. West Hills2
  6. Arcadia1
  7. Bakersfield1
  8. Banning1

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

Most NPIs were issued in 2006 and 2007

Unilab Corporation NPIs by year issued2006: 20, 2007: 18, 2008: 1, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 10510152020062007200820092010201120122013201420152018111
Unilab Corporation NPIs by year issued2006: 20, 2007: 18, 2008: 1, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 10510152020062007200820092010201120122013201420152018111
Unilab Corporation NPIs by year issued2006: 20, 2007: 18, 2008: 1, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 105101520200720092011201320152006: 2018111

Source: CMS NPPES, enumeration dates.

20 NPIs were issued in 2006 alone, more than in any other year; none in 5 of the years between.

Riverside locations

The city with the most Unilab Corporation NPIs. The full list of all 41 follows.

NPILocationPrimary taxonomyIssued
14977734444204 RIVERWALK PARKWAY SUITE 340, RiversideClinical Medical LaboratoryJul 18, 2006
15088721367300 MAGNOLIA AVE, RiversideClinical Medical LaboratoryAug 1, 2006
10130614646985 ARLINGTON AVE STE A, RiversideClinical Medical LaboratoryJan 23, 2007
All 41 locations, by city
NPILocationPrimary taxonomyIssued
1033138144612 W DUARTE RD STE 104, ArcadiaClinical Medical LaboratoryJul 19, 2006
15089058299500 STOCKDALE HWY SUITE 107, BakersfieldClinical Medical LaboratoryFeb 5, 2007
13967633486109 W RAMSEY ST, BanningClinical Medical LaboratoryJul 18, 2006
12151910022999 REGENT ST SUITE 101, BerkeleyClinical Medical LaboratoryJul 11, 2008
1184763419448 N BEDFORD DR, Beverly HillsClinical Medical LaboratoryFeb 5, 2007
1255479770901 CAMPUS DR SUITE 103, Daly CityClinical Medical LaboratoryFeb 5, 2007
14079963177802 DUBLIN BLVD, DublinClinical Medical LaboratoryFeb 8, 2007
12958915547060 N RECREATION AVE STE 106, FresnoClinical Medical LaboratoryDec 29, 2006
173022813115462 MAIN ST STE A, HesperiaClinical Medical LaboratoryFeb 5, 2007
11149451697000 BOULDER AVE, HighlandClinical Medical LaboratoryJul 18, 2006
15685016418001 IRVINE CENTER DR SUITE 1250, IrvineClinical Medical LaboratoryFeb 6, 2007
184121889811370 ANDERSON ST STE 2900, Loma LindaClinical Medical LaboratoryJul 18, 2006
10432380901045 S ATLANTIC AVE STE 507, Long BeachClinical Medical LaboratoryJul 18, 2006
1497174585293 EAST COMMERCE AVE, MantecaClinical Medical LaboratoryApr 16, 2014
1629116124857 W CHILDS AVE, MercedClinical Medical LaboratoryFeb 5, 2007
19322484651401 SPANOS CRT STE 107B, ModestoClinical Medical LaboratoryFeb 5, 2007
12159552651401 AVOCADO AVE STE STE 103, Newport BeachClinical Medical LaboratoryJul 18, 2006
127567178648677 VICTORIA LN, OakhurstClinical Medical LaboratoryFeb 5, 2007
1033137088431 S BATAVIA ST STE 102, OrangeClinical Medical LaboratoryJul 18, 2006
177050172850 BELLEFONTAINE ST STE 101, PasadenaClinical Medical LaboratoryJul 18, 2006
11049519121550 PROFESSIONAL DR SUITE B, PetalumaClinical Medical LaboratoryFeb 22, 2007
16099151312510 AIRPARK DR STE 202, ReddingClinical Medical LaboratoryFeb 5, 2007
15886825382 W FERN AVE, RedlandsClinical Medical LaboratoryJul 18, 2006
1194743146245 TERRACINA BLVD STE 104B, RedlandsClinical Medical LaboratoryJul 18, 2006
14977734444204 RIVERWALK PARKWAY SUITE 340, RiversideClinical Medical LaboratoryJul 18, 2006
15088721367300 MAGNOLIA AVE, RiversideClinical Medical LaboratoryAug 1, 2006
10130614646985 ARLINGTON AVE STE A, RiversideClinical Medical LaboratoryJan 23, 2007
16199134493714 NORTHGATE BLVD, SacramentoClinical Medical LaboratoryJun 21, 2006
10537853453620 NORTHGATE BLVD, SacramentoClinical Medical LaboratoryNov 24, 2015
10230548639245 ACTIVITY RD STE 109 & STE 110, San DiegoClinical Medical LaboratoryJun 21, 2006
18614386082369 BERING DR, San JoseClinical Medical LaboratoryJun 21, 2006
16493158212291 W MARCH LANE SUITE 145 F, StocktonClinical Medical LaboratoryFeb 21, 2007
152800435518408 OXNARD ST, TarzanaClinical Medical LaboratoryJun 21, 2006
1043358559770 MASON ST, VacavilleClinical Medical LaboratoryFeb 5, 2007
19422289942065 SPERRY AVE, VenturaClinical Medical LaboratoryJul 18, 2006
12655871742065 SPERRY AVE STE A, VenturaClinical Medical LaboratoryJan 24, 2007
10433599382065 SPERRY AVE SUITE A, VenturaClinical Medical LaboratoryFeb 6, 2007
1093869455108 LA CASA VIA STE 105, Walnut CreekClinical Medical LaboratoryJan 23, 2007
13664790998401 FALLBROOK AVE, West HillsClinical Medical LaboratoryJun 27, 2006
16593907638403 FALLBROOK AVE, West HillsClinical Medical LaboratoryJul 19, 2006
13160866227921 PAINTER AVE STE 3, WhittierClinical Medical LaboratoryFeb 5, 2007

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 Unilab Corporation have 41 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Unilab Corporation's NPIs list practice locations in 34 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.