Registry data as of Aug 27, 2026

Keystone Service Systems

Keystone Service Systems holds 52 active organization NPIs in the federal registry, with practice locations in 18 cities in 2 states. 43 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

Harrisburg, PA has the most NPIs, 17

  1. Harrisburg, PA17
  2. Lancaster, PA7
  3. Sunbury, PA4
  4. Westminster, MD3
  5. Hummelstown, PA3
  6. Lewistown, PA3
  7. Chambersburg, PA2
  8. State College, PA2

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

Most NPIs were issued in 2007 and 2008

Keystone Service Systems NPIs by year issued2006: 1, 2007: 14, 2008: 10, 2009: 9, 2010: 1, 2011: 0, 2012: 1, 2013: 0, 2014: 0, 2015: 1, 2016: 10, 2017: 0, 2018: 0, 2019: 1, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 305101520062008201020122014201620182020202220242007: 14101911110113
Keystone Service Systems NPIs by year issued2006: 1, 2007: 14, 2008: 10, 2009: 9, 2010: 1, 2011: 0, 2012: 1, 2013: 0, 2014: 0, 2015: 1, 2016: 10, 2017: 0, 2018: 0, 2019: 1, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 3051015200620072008200920102011201220132014201520162017201820192020202120222023202414101911110113
Keystone Service Systems NPIs by year issued2006: 1, 2007: 14, 2008: 10, 2009: 9, 2010: 1, 2011: 0, 2012: 1, 2013: 0, 2014: 0, 2015: 1, 2016: 10, 2017: 0, 2018: 0, 2019: 1, 2020: 0, 2021: 1, 2022: 0, 2023: 0, 2024: 305101520062009201220152018202120242007: 14

Source: CMS NPPES, enumeration dates.

14 NPIs were issued in 2007 alone, more than in any other year; none in 8 of the years between.

Harrisburg, PA locations

The city with the most Keystone Service Systems NPIs. The full list of all 52 follows.

NPILocationPrimary taxonomyIssued
15685256404391 STURBRIDGE DR, Harrisburg, PAIntellectual & Developmental Disabilities PsychologistDec 19, 2006
11544482803700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyMar 23, 2007
14978721702505 N FRONT ST, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2007
17706004543700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2007
1689797631310 N 2ND ST, Harrisburg, PACommunity/Behavioral Health AgencyApr 6, 2007
14372724733700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyApr 6, 2007
1346363389124 PINE ST, Harrisburg, PAPhysical TherapistApr 6, 2007
16393470574025 N PROGRESS AVE, Harrisburg, PACommunity/Behavioral Health AgencyFeb 19, 2008
All 52 locations, by state and city
NPILocationPrimary taxonomyIssued
1992928600255 CLIFTON BLVD SUITE 309, Westminster, MDCase Management AgencyApr 11, 2007
1952527749255 CLIFTON BLVD, Westminster, MDCommunity/Behavioral Health AgencyApr 18, 2007
1861618654255 CLIFTON BLVD SUITE 309, Westminster, MDCommunity/Behavioral Health AgencyApr 18, 2007
1306963426441 N SPRING ST, Bellefonte, PACommunity/Behavioral Health AgencyMar 23, 2007
1912272717430 PHOENIX DR, Chambersburg, PACommunity/Behavioral Health AgencyMar 13, 2012
10638792111280 E MCKINLEY ST, Chambersburg, PACommunity/Behavioral Health AgencyJan 19, 2016
1902123680625 RIDGE PIKE, Conshohocken, PACounselorApr 21, 2010
1750748794111 MACDADE BLVD, Folsom, PACommunity/Behavioral Health AgencyJan 21, 2016
1194182329221 OLD STATE RD, Gardners, PACommunity/Behavioral Health AgencyJan 19, 2016
1548815038676 BEAVER CREEK RD, Hanover, PACommunity/Behavioral Health AgencyAug 2, 2019
15685256404391 STURBRIDGE DR, Harrisburg, PAIntellectual & Developmental Disabilities PsychologistDec 19, 2006
11544482803700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyMar 23, 2007
14978721702505 N FRONT ST, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2007
17706004543700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2007
1689797631310 N 2ND ST, Harrisburg, PACommunity/Behavioral Health AgencyApr 6, 2007
14372724733700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyApr 6, 2007
1346363389124 PINE ST, Harrisburg, PAPhysical TherapistApr 6, 2007
16393470574025 N PROGRESS AVE, Harrisburg, PACommunity/Behavioral Health AgencyFeb 19, 2008
16191199891025 CHAMBERS ST, Harrisburg, PACommunity/Behavioral Health AgencyApr 1, 2009
15181098832900 GREEN ST, Harrisburg, PACommunity/Behavioral Health AgencyApr 1, 2009
12050792413700 VARTAN WAY, Harrisburg, PACommunity/Behavioral Health AgencyApr 7, 2009
17305452033105 HOFFER ST, Harrisburg, PACommunity/Behavioral Health AgencyJan 13, 2016
14971133935250 REYNOLDS LN, Harrisburg, PACommunity/Behavioral Health AgencyFeb 5, 2016
17103482552626 N 3RD ST, Harrisburg, PACommunity/Behavioral Health AgencyMar 11, 2016
136629298960 LAKEPOINT DR, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2024
17006363394190 KING GEORGE DR APT A, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2024
10834646062926 WILSON PKWY, Harrisburg, PACommunity/Behavioral Health AgencyMar 26, 2024
17605032478182 ADAMS DR, Hummelstown, PACase Management AgencyApr 3, 2007
19424420748182 ADAMS DR, Hummelstown, PACommunity/Behavioral Health AgencyApr 6, 2009
19727450088182 ADAMS DR, Hummelstown, PACommunity/Behavioral Health AgencyApr 6, 2009
1154577427155 E NEW ST, Lancaster, PACommunity/Behavioral Health AgencyAug 18, 2008
10737693601139 WABANK RD H-302, Lancaster, PACommunity/Behavioral Health AgencyAug 18, 2008
1235385519230 S QUEEN ST, Lancaster, PACommunity/Behavioral Health AgencyAug 18, 2008
12454875291891 SANTA BARBARA DR SUITE 203, Lancaster, PACommunity/Behavioral Health AgencyAug 19, 2008
1386891406113 PENNSHIRE DR, Lancaster, PACommunity/Behavioral Health AgencyAug 20, 2008
12050832431891 SANATA BARBARA DR SUITE 104, Lancaster, PACommunity/Behavioral Health AgencyAug 21, 2008
1598900102230 S QUEEN ST, Lancaster, PACase Management AgencyDec 10, 2008
1073195707341 CUMBERLAND ST, Lebanon, PACommunity/Behavioral Health AgencyApr 22, 2021
13464870711 S MAIN ST, Lewistown, PACase Management AgencyJan 16, 2009
12456970511 S MAIN ST, Lewistown, PACommunity/Behavioral Health AgencyJan 25, 2016
1104285444625 S MAIN ST, Lewistown, PACommunity/Behavioral Health AgencyFeb 15, 2016
1487011615427 HOGESTOWN RD, Mechanicsburg, PACommunity/Behavioral Health AgencyJan 19, 2016
13363982391009 OLD NOBLESTOWN RD, Oakdale, PACommunity/Behavioral Health AgencySep 16, 2008
1205085313759 CRAWFORD RD, Pittsburgh, PACommunity/Behavioral Health AgencySep 12, 2008
1285755728915 BENNER PIKE, State College, PAOccupational Therapy AssistantApr 3, 2007
1124265269915 BENNER PIKE, State College, PACommunity/Behavioral Health AgencyJan 12, 2009
1982721155217 RACE ST, Sunbury, PARehabilitation HospitalMar 23, 2007
1306963087301 ARCH ST, Sunbury, PACommunity/Behavioral Health AgencyMar 26, 2007
1942442694301 ARCH ST, Sunbury, PACommunity/Behavioral Health AgencyMar 26, 2009
10830738521145 N 4TH ST, Sunbury, PACommunity/Behavioral Health AgencyFeb 22, 2016
10333561752915 N GEORGE ST STE 3, York, PACommunity/Behavioral Health AgencyJan 12, 2009
13961006401926 E MARKET ST, York, PACommunity/Behavioral Health AgencyDec 30, 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 Keystone Service Systems have 52 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Keystone Service Systems's NPIs list practice locations in 18 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.