Registry data as of Aug 27, 2026

Mastercare

Mastercare holds 12 active organization NPIs in the federal registry, with practice locations in 5 cities in 2 states. 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

Honolulu, HI has the most NPIs, 4

  1. Honolulu, HI4
  2. Hilo, HI3
  3. Lihue, HI2
  4. Wailuku, HI2
  5. Denver, CO1

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

Most NPIs were issued in 2007 and 2020

Mastercare NPIs by year issued2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 8, 2021: 1, 2022: 0, 2023: 10246820072009201120132015201720192021202312020: 8111
Mastercare NPIs by year issued2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 8, 2021: 1, 2022: 0, 2023: 1024682007200820092010201120122013201420152016201720182019202020212022202318111
Mastercare NPIs by year issued2007: 1, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 1, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 8, 2021: 1, 2022: 0, 2023: 10246820072009201120132015201720192021202312020: 8111

Source: CMS NPPES, enumeration dates.

8 NPIs were issued in 2020 alone, more than in any other year; none in 12 of the years between.

Honolulu, HI locations

The city with the most Mastercare NPIs. The full list of all 12 follows.

NPILocationPrimary taxonomyIssued
11342726691314 S KING ST STE 856, Honolulu, HINursing Care AgencyJan 19, 2007
11840932541314 S KING ST SUITE 424, Honolulu, HIDevelopmentally Disabled Services Day Training AgencySep 18, 2015
13468729911314 S KING ST STE 424, Honolulu, HIHome Health AgencyFeb 11, 2020
11640341381314 S KING ST, Honolulu, HIIn Home Supportive Care AgencyAug 20, 2020
All 12 locations, by state and city
NPILocationPrimary taxonomyIssued
18611818935201 TRUCKEE ST, Denver, COIntellectual and/or Developmental Disabilities Community Based Residential Treatment FacilityMay 4, 2023
1538761606395 KILAUEA AVE UNIT B3, Hilo, HIHome Health AgencyNov 12, 2020
1174125348395 KILAUEA AVE UNIT B3, Hilo, HIIn Home Supportive Care AgencyNov 12, 2020
1295493351395 KILAUEA AVE UNIT B3, Hilo, HIIn Home Supportive Care AgencyDec 6, 2021
11342726691314 S KING ST STE 856, Honolulu, HINursing Care AgencyJan 19, 2007
11840932541314 S KING ST SUITE 424, Honolulu, HIDevelopmentally Disabled Services Day Training AgencySep 18, 2015
13468729911314 S KING ST STE 424, Honolulu, HIHome Health AgencyFeb 11, 2020
11640341381314 S KING ST, Honolulu, HIIn Home Supportive Care AgencyAug 20, 2020
14276506964370 KUKUI GROVE ST STE 106, Lihue, HIIn Home Supportive Care AgencyNov 12, 2020
12458323104370 KUKUI GROVE ST STE 106, Lihue, HIHome Health AgencyNov 12, 2020
1124620398210 IMI KALA ST STE 208, Wailuku, HIIn Home Supportive Care AgencyNov 12, 2020
1699377762210 IMI KALA ST STE 208, Wailuku, HIHome Health AgencyNov 12, 2020

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 Mastercare have 12 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Mastercare's NPIs list practice locations in 5 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.