NPPES file of Aug 9, 2026

County Of San Mateo

County Of San Mateo holds 63 active organization NPIs in the federal registry, with practice locations in 9 California cities. 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?

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Find a location's NPI

San Mateo has the most NPIs, 39

  1. San Mateo39
  2. Redwood City8
  3. Daly City6
  4. South San Francisco3
  5. Menlo Park2
  6. San Bruno2
  7. Belmont1
  8. Half Moon Bay1

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

Most NPIs were issued in 2006 and 2019

County Of San Mateo NPIs by year issued2006: 49, 2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 4, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 3, 2025: 1, 2026: 2020406020062008201020122014201620182020202220242026492019: 41111312
County Of San Mateo NPIs by year issued2006: 49, 2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 4, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 3, 2025: 1, 2026: 2020406020062008201020122014201620182020202220242026492019: 41111312
County Of San Mateo NPIs by year issued2006: 49, 2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 1, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 4, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 3, 2025: 1, 2026: 2020406020082011201420172020202320262006: 492019: 4

Source: CMS NPPES, enumeration dates.

49 NPIs were issued in 2006 alone, more than in any other year; none in 12 of the years between.

San Mateo locations

The city with the most County Of San Mateo NPIs. The full list of all 63 follows.

NPILocationPrimary taxonomyIssued
1346271814222 W 39TH AVE, San MateoEmergency Medicine PhysicianJul 5, 2006
1942226014222 W 39TH AVE, San MateoClinic/CenterJul 14, 2006
13362316462000 ALAMEDA DE LAS PULGAS, San MateoMental Health Clinic/Center (Including Community Mental Health Center)Sep 28, 2006
1750465902222 W 39TH AVE, San MateoRadiology Clinic/CenterOct 24, 2006
1700960937222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
1437233665222 W 39TH AVE, San MateoClinical Medical LaboratoryOct 24, 2006
1952485104222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
1861576019222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
All 63 locations, by city
NPILocationPrimary taxonomyIssued
15483523051400 ALAMEDA DE LAS PULGAS, BelmontAdolescent and Children Mental Health Clinic/CenterSep 29, 2006
12452767162780 JUNIPERO SERRA BLVD, Daly CityClinic/CenterJun 21, 2006
1265522619380 90TH ST, Daly CityFederally Qualified Health Center (FQHC)Oct 14, 2006
1023196011350 90TH STREET, Daly CityFederally Qualified Health Center (FQHC)Nov 1, 2006
1255400909380 90TH ST, Daly CityMulti-Specialty Clinic/CenterNov 7, 2006
19221534512780 JUNIPERO SERRA BLVD, Daly CityMulti-Specialty Clinic/CenterJan 24, 2007
1952954976350 90TH ST, Daly CityCommunity Health Clinic/CenterJul 18, 2019
1841379765225 CABRILLO HWY S SUITE 200A, Half Moon BayFederally Qualified Health Center (FQHC)Nov 2, 2006
1336239052795 WILLOW RD, Menlo ParkMedical Specialty Clinic/CenterOct 13, 2006
1023197944795 WILLOW RD BLDG 334, Menlo ParkFederally Qualified Health Center (FQHC)Nov 2, 2006
18715290732710 MIDDLEFIELD RD, Redwood CityMulti-Specialty Clinic/CenterJun 23, 2006
13867285332710 MIDDLEFIELD RD, Redwood CityFederally Qualified Health Center (FQHC)Oct 24, 2006
1568540557200 JAMES AVE, Redwood CityFederally Qualified Health Center (FQHC)Nov 1, 2006
1528432481727 SHASTA ST, Redwood CityCommunity/Behavioral Health AgencyNov 16, 2015
18610520601300 MAPLE ST., Redwood CityPrison Health Clinic/CenterJun 19, 2019
1750941977300 BRADFORD ST., Redwood CityPrison Health Clinic/CenterJun 19, 2019
1932934858300 BRADFORD ST, Redwood CityPrison Health Clinic/CenterSep 3, 2024
1053264770300 BRADFORD ST, Redwood CityClinical Social WorkerFeb 20, 2026
1215029087300 PIEDMONT AVE, San BrunoAdolescent and Children Mental Health Clinic/CenterSep 29, 2006
10938763691280 COMMODORE DR, San BrunoOccupational TherapistDec 12, 2006
1346271814222 W 39TH AVE, San MateoEmergency Medicine PhysicianJul 5, 2006
1942226014222 W 39TH AVE, San MateoClinic/CenterJul 14, 2006
13362316462000 ALAMEDA DE LAS PULGAS, San MateoMental Health Clinic/Center (Including Community Mental Health Center)Sep 28, 2006
1750465902222 W 39TH AVE, San MateoRadiology Clinic/CenterOct 24, 2006
1700960937222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
1437233665222 W 39TH AVE, San MateoClinical Medical LaboratoryOct 24, 2006
1952485104222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
1861576019222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 24, 2006
1821174855222 W 39TH AVE, San MateoEmergency Care Clinic/CenterOct 31, 2006
1437235587222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterOct 31, 2006
1710065792222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 1, 2006
1114005105222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 1, 2006
1144309055222 W 39TH AVE, San MateoPsychiatric Hospital UnitNov 2, 2006
1215016126222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 2, 2006
1114006038222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 2, 2006
1932288859222 W 39TH AVE, San MateoFederally Qualified Health Center (FQHC)Nov 2, 2006
1194804013222 W 39TH AVE, San MateoFederally Qualified Health Center (FQHC)Nov 2, 2006
1710066634222 W 39TH AVE, San MateoLong Term Care HospitalNov 2, 2006
1831268580222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1740359496222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1659440303222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1568531218222 W 39TH AVE, San MateoPsychiatric Hospital UnitNov 7, 2006
1477622124222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1386713030222 W 39TH AVE, San MateoGeneral Acute Care HospitalNov 7, 2006
1871662528222 W 39TH AVE, San MateoGeneral Acute Care HospitalNov 7, 2006
1780753434222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1679642326222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1841369592222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterNov 7, 2006
1194894840222 W 39TH AVE, San MateoPsychiatric Hospital UnitNov 7, 2006
1003985755222 W 39TH AVE, San MateoGeneral Acute Care HospitalNov 7, 2006
1306907928222 W 39TH AVE, San MateoPublic Health or Welfare AgencyDec 13, 2006
1528129152222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterDec 13, 2006
1417019548222 W 39TH AVE, San MateoMulti-Specialty Clinic/CenterDec 14, 2006
1740684935222 W 39TH AVE, San MateoPsychiatric Hospital UnitOct 16, 2014
1669032868222 PAUL SCANNELL DR., San MateoPrison Health Clinic/CenterJun 19, 2019
1336809359225 37TH AVE FL 2, San MateoCase Management AgencyDec 20, 2021
1902661259222 W 39TH AVE, San MateoPharmacyFeb 15, 2024
1679307698222 W 39TH AVE, San MateoPublic Health or Welfare AgencyAug 30, 2024
1295605178222 W 39TH AVE, San MateoDentistNov 6, 2025
1609812148306 SPRUCE AVE, South San FranciscoMulti-Specialty Clinic/CenterJun 22, 2006
1750460671306 SPRUCE AVE, South San FranciscoFederally Qualified Health Center (FQHC)Nov 2, 2006
13764628791024 MISSION RD FL 1, South San FranciscoFederally Qualified Health Center (FQHC)Jul 10, 2026
1215029079199 CHURCHILL AVE, WoodsideAdolescent and Children Mental Health Clinic/CenterSep 29, 2006

Related names

  1. County Of San Mateo - Public Health1 NPI

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 County Of San Mateo have 63 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. County Of San Mateo's NPIs list practice locations in 9 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.