Registry data as of Aug 27, 2026

Cornerstone Montgomery

Cornerstone Montgomery holds 41 active organization NPIs in the federal registry, with practice locations in 12 Maryland cities. 21 list community/behavioral health agency 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

Rockville has the most NPIs, 8

  1. Rockville8
  2. Silver Spring8
  3. Bethesda6
  4. Prince Frederick5
  5. Leonardtown4
  6. Waldorf4
  7. Derwood1
  8. Germantown1

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

Most NPIs were issued in 2015 and 2022

Cornerstone Montgomery NPIs by year issued2005: 1, 2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 19, 2016: 1, 2017: 0, 2018: 0, 2019: 3, 2020: 1, 2021: 0, 2022: 9, 2023: 6051015202005200720092011201320152017201920212023192022: 9111316
Cornerstone Montgomery NPIs by year issued2005: 1, 2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 19, 2016: 1, 2017: 0, 2018: 0, 2019: 3, 2020: 1, 2021: 0, 2022: 9, 2023: 6051015202005200620072008200920102011201220132014201520162017201820192020202120222023199111316
Cornerstone Montgomery NPIs by year issued2005: 1, 2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 19, 2016: 1, 2017: 0, 2018: 0, 2019: 3, 2020: 1, 2021: 0, 2022: 9, 2023: 60510152020052008201120142017202020232015: 192022: 9

Source: CMS NPPES, enumeration dates.

19 NPIs were issued in 2015 alone, more than in any other year; none in 11 of the years between.

Rockville locations

The city with the most Cornerstone Montgomery NPIs. The full list of all 41 follows.

NPILocationPrimary taxonomyIssued
11345919852 TAFT CT A, RockvilleMental Health Clinic/Center (Including Community Mental Health Center)Oct 20, 2015
18517634942 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyOct 22, 2015
192247054114221 CHADWICK LN, RockvilleMental Illness Community Based Residential Treatment FacilityOct 22, 2015
11547930652 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyOct 30, 2015
19628748752 TAFT CT A, RockvilleMental Illness Community Based Residential Treatment FacilityOct 30, 2015
15284304362204 MCAULIFFE DR, RockvilleMental Illness Community Based Residential Treatment FacilityOct 30, 2015
18719433812 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyJun 15, 2016
13761817502 TAFT CT STE 200, RockvilleCommunity/Behavioral Health AgencyDec 16, 2019
All 41 locations, by city
NPILocationPrimary taxonomyIssued
11947257396040 SOUTHPORT DR, BethesdaMental Health Clinic/Center (Including Community Mental Health Center)Jul 26, 2005
15887699476040 SOUTHPORT DR, BethesdaCommunity/Behavioral Health AgencySep 13, 2006
13264102346040 SOUTHPORT DR, BethesdaMental Illness Community Based Residential Treatment FacilityOct 30, 2015
18810667936040 SOUTHPORT DR, BethesdaCommunity/Behavioral Health AgencyOct 30, 2015
19923433706040 SOUTHPORT DR, BethesdaCommunity/Behavioral Health AgencyDec 16, 2019
19328349006040 SOUTHPORT DR, BethesdaCommunity/Behavioral Health AgencyJul 22, 2022
15486321936112 GRANBY RD, DerwoodMental Illness Community Based Residential Treatment FacilityOct 22, 2015
197297550613436 FOUNTAIN CLUB DR, GermantownMental Illness Community Based Residential Treatment FacilityOct 22, 2015
12156469638305 OLD LEONARDTOWN RD, HughesvilleCommunity/Behavioral Health AgencyNov 22, 2022
187196540010615 PARKWOOD DR, KensingtonMental Illness Community Based Residential Treatment FacilityOct 22, 2015
157827212641900 FENWICK ST STE 5, LeonardtownCommunity/Behavioral Health AgencyNov 22, 2022
107322329341900 FENWICK ST STE 5, LeonardtownCommunity/Behavioral Health AgencyNov 29, 2022
168937699841900 FENWICK ST, LeonardtownCase Management AgencyMar 20, 2023
199240890041900 FENWICK ST STE 5, LeonardtownCommunity/Behavioral Health AgencyMar 27, 2023
1699484394305 PRINCE FREDERICK BLVD, Prince FrederickCommunity/Behavioral Health AgencyNov 21, 2022
199241454455 ARMORY RD, Prince FrederickMental Illness Community Based Residential Treatment FacilityNov 22, 2022
1265142483305 PRINCE FREDERICK BLVD, Prince FrederickCommunity/Behavioral Health AgencyNov 29, 2022
1659073963305 PRINCE FREDERICK BLVD, Prince FrederickCase Management AgencyMar 20, 2023
1245933597305 PRINCE FREDERICK BLVD, Prince FrederickCommunity/Behavioral Health AgencyMar 24, 2023
11345919852 TAFT CT A, RockvilleMental Health Clinic/Center (Including Community Mental Health Center)Oct 20, 2015
18517634942 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyOct 22, 2015
192247054114221 CHADWICK LN, RockvilleMental Illness Community Based Residential Treatment FacilityOct 22, 2015
11547930652 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyOct 30, 2015
19628748752 TAFT CT A, RockvilleMental Illness Community Based Residential Treatment FacilityOct 30, 2015
15284304362204 MCAULIFFE DR, RockvilleMental Illness Community Based Residential Treatment FacilityOct 30, 2015
18719433812 TAFT CT A, RockvilleCommunity/Behavioral Health AgencyJun 15, 2016
13761817502 TAFT CT STE 200, RockvilleCommunity/Behavioral Health AgencyDec 16, 2019
1952773582615 UNIVERSITY BLVD E, Silver SpringMental Illness Community Based Residential Treatment FacilityOct 22, 2015
11749957811398 LAMBERTON DR, Silver SpringAdult Mental Health Clinic/CenterOct 22, 2015
10931876273914 TYNEWICK DR, Silver SpringMental Illness Community Based Residential Treatment FacilityOct 22, 2015
16193495291398 LAMBERTON DR, Silver SpringCommunity/Behavioral Health AgencyOct 30, 2015
14375213411398 LAMBERTON DR, Silver SpringCommunity/Behavioral Health AgencyOct 30, 2015
18911677068915 COLESVILLE RD, Silver SpringMental Illness Community Based Residential Treatment FacilityOct 30, 2015
11842625601398 LAMBERTON DR, Silver SpringCommunity/Behavioral Health AgencyDec 16, 2019
123573003714531 LAYHILL RD, Silver SpringMental Illness Community Based Residential Treatment FacilityNov 6, 2020
18315614638205 HOUSTON CT, Takoma ParkMental Illness Community Based Residential Treatment FacilityOct 22, 2015
14570600302670 CRAIN HWY STE 505, WaldorfCommunity/Behavioral Health AgencyNov 22, 2022
17005969212670 CRAIN HWY STE 505, WaldorfCommunity/Behavioral Health AgencyNov 29, 2022
18813961822670 CRAIN HWY STE 505, WaldorfCase Management AgencyMar 20, 2023
16095796142670 CRAIN HWY STE 505, WaldorfCommunity/Behavioral Health AgencyMar 27, 2023
13769159911221 ARCOLA AVE, WheatonMental Illness Community Based Residential Treatment FacilityOct 22, 2015

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 Cornerstone Montgomery 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. Cornerstone Montgomery's NPIs list practice locations in 12 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.