NPPES file of Aug 9, 2026

Mount Auburn Hospital

Mount Auburn Hospital holds 12 active organization NPIs in the federal registry, with practice locations in 2 Massachusetts cities. 6 list general acute care hospital 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

Cambridge has the most NPIs, 11

  1. Cambridge11
  2. Watertown1

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

Most NPIs were issued in 2005 and 2012

Mount Auburn Hospital NPIs by year issued2005: 3, 2006: 0, 2007: 2, 2008: 0, 2009: 0, 2010: 1, 2011: 0, 2012: 3, 2013: 0, 2014: 0, 2015: 2, 2016: 0, 2017: 0, 2018: 0, 2019: 101232005200720092011201320152017201932012: 32121
Mount Auburn Hospital NPIs by year issued2005: 3, 2006: 0, 2007: 2, 2008: 0, 2009: 0, 2010: 1, 2011: 0, 2012: 3, 2013: 0, 2014: 0, 2015: 2, 2016: 0, 2017: 0, 2018: 0, 2019: 10123200520062007200820092010201120122013201420152016201720182019332121
Mount Auburn Hospital NPIs by year issued2005: 3, 2006: 0, 2007: 2, 2008: 0, 2009: 0, 2010: 1, 2011: 0, 2012: 3, 2013: 0, 2014: 0, 2015: 2, 2016: 0, 2017: 0, 2018: 0, 2019: 101232005200720092011201320152017201932012: 32121

Source: CMS NPPES, enumeration dates.

3 NPIs were issued in 2005 alone, more than in any other year; none in 9 of the years between.

Cambridge locations

The city with the most Mount Auburn Hospital NPIs. The full list of all 12 follows.

NPILocationPrimary taxonomyIssued
1689670259330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJun 28, 2005
1649254491330 MOUNT AUBURN ST, CambridgePsychiatric Hospital UnitDec 5, 2005
1255548251330 MOUNT AUBURN ST, CambridgePediatrics PhysicianMay 17, 2007
1588863179725 CONCORD AVE OCCUPATIONAL HEALTH 5TH FLOOR, CambridgeOccupational Medicine Clinic/CenterJul 13, 2007
1326352576330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 29, 2010
1902168339330 MOUNT AUBURN STREET, CambridgeGeneral Acute Care HospitalJun 12, 2012
1518212554330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 16, 2012
1124374707330 MOUNT AUBURN ST, CambridgeInternal Medicine PhysicianAug 1, 2012
All 12 locations, by city
NPILocationPrimary taxonomyIssued
1689670259330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJun 28, 2005
1649254491330 MOUNT AUBURN ST, CambridgePsychiatric Hospital UnitDec 5, 2005
1255548251330 MOUNT AUBURN ST, CambridgePediatrics PhysicianMay 17, 2007
1588863179725 CONCORD AVE OCCUPATIONAL HEALTH 5TH FLOOR, CambridgeOccupational Medicine Clinic/CenterJul 13, 2007
1326352576330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 29, 2010
1902168339330 MOUNT AUBURN STREET, CambridgeGeneral Acute Care HospitalJun 12, 2012
1518212554330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 16, 2012
1124374707330 MOUNT AUBURN ST, CambridgeInternal Medicine PhysicianAug 1, 2012
1538542006330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 2, 2015
1710360292330 MOUNT AUBURN ST, CambridgeGeneral Acute Care HospitalJul 2, 2015
1811540727330 MOUNT AUBURN ST, CambridgeInternal Medicine PhysicianJul 19, 2019
19028800161 ARSENAL MARKET PL, WatertownHome Health AgencyDec 1, 2005

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 Mount Auburn Hospital 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. Mount Auburn Hospital'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.