NPPES file of Aug 9, 2026

John Muir Health

John Muir Health holds 15 active organization NPIs in the federal registry, with practice locations in 2 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?

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

Find a location's NPI

Walnut Creek has the most NPIs, 9

  1. Walnut Creek9
  2. Concord6

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

Most NPIs were issued in 2006 and 2011

John Muir Health NPIs by year issued2006: 5, 2007: 3, 2008: 0, 2009: 0, 2010: 1, 2011: 4, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 20246200620082010201220142016201820202022202452011: 4312
John Muir Health NPIs by year issued2006: 5, 2007: 3, 2008: 0, 2009: 0, 2010: 1, 2011: 4, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 20246200620072008200920102011201220132014201520162017201820192020202120222023202454312
John Muir Health NPIs by year issued2006: 5, 2007: 3, 2008: 0, 2009: 0, 2010: 1, 2011: 4, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 0, 2022: 0, 2023: 0, 2024: 20246200620092012201520182021202452011: 4312

Source: CMS NPPES, enumeration dates.

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

Walnut Creek locations

The city with the most John Muir Health NPIs. The full list of all 15 follows.

NPILocationPrimary taxonomyIssued
17402152191601 YGNACIO VALLEY RD, Walnut CreekGeneral Acute Care HospitalJul 12, 2006
14472693031601 YGNACIO VALLEY RD, Walnut CreekRehabilitation Hospital UnitAug 7, 2006
10433680121601 YGNACIO VALLEY RD, Walnut CreekInstitutional PharmacyJan 8, 2007
12757534931601 YGNACIO VALLEY RD, Walnut CreekCardiovascular Disease PhysicianApr 30, 2007
16990999371601 YGNACIO VALLEY RD, Walnut CreekClinical Medical LaboratoryMar 16, 2010
18011630351601 YGNACIO VALLEY RD, Walnut CreekCardiovascular Disease PhysicianNov 16, 2011
11748903051601 YGNACIO VALLEY RD, Walnut CreekNurse PractitionerNov 16, 2011
1265202725177 LA CASA VIA STE 270, Walnut CreekCommunity/Retail PharmacyJan 5, 2024
All 15 locations, by city
NPILocationPrimary taxonomyIssued
18018213762540 EAST ST, ConcordGeneral Acute Care HospitalJul 12, 2006
14371614522298 PIKE CT, ConcordHome Health AgencyAug 12, 2006
16190494912700 GRANT ST, ConcordPharmacyNov 15, 2006
17606027262540 EAST ST, ConcordCardiovascular Disease PhysicianMay 1, 2007
11647993912540 EAST ST, ConcordCardiovascular Disease PhysicianNov 16, 2011
13364165692540 EAST ST, ConcordNurse PractitionerNov 16, 2011
17402152191601 YGNACIO VALLEY RD, Walnut CreekGeneral Acute Care HospitalJul 12, 2006
14472693031601 YGNACIO VALLEY RD, Walnut CreekRehabilitation Hospital UnitAug 7, 2006
10433680121601 YGNACIO VALLEY RD, Walnut CreekInstitutional PharmacyJan 8, 2007
12757534931601 YGNACIO VALLEY RD, Walnut CreekCardiovascular Disease PhysicianApr 30, 2007
16990999371601 YGNACIO VALLEY RD, Walnut CreekClinical Medical LaboratoryMar 16, 2010
18011630351601 YGNACIO VALLEY RD, Walnut CreekCardiovascular Disease PhysicianNov 16, 2011
11748903051601 YGNACIO VALLEY RD, Walnut CreekNurse PractitionerNov 16, 2011
1265202725177 LA CASA VIA STE 270, Walnut CreekCommunity/Retail PharmacyJan 5, 2024
1366208688177 LA CASA VIA STE 350, Walnut CreekPharmacyFeb 23, 2024

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 John Muir Health have 15 NPIs?

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