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KEYSTONE SERVICE SYSTEMS, INC.
NPI 1568525640
Psychologist - Intellectual and Developmental Disabilities in Harrisburg, PA

Active since December 19, 2006
4391 STURBRIDGE DR, HARRISBURG, PA 17110(717) 232-7509(717) 232-6687 Get Directions Write a Review

NPPES record last updated: April 22, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Apr 22, 2026, May 12, 2021, Mar 4, 2016 and 1 more (4 updates tracked since 2016).

About Keystone Service Systems, Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KEYSTONE SERVICE SYSTEMS, INC. (NPI 1568525640) is a healthcare organization registered as an intellectual and developmental disabilities in Harrisburg, Pennsylvania and active in the NPI registry since December 2006. The organization lists Charles S. Sweeder, Chief Executive Officer, as its authorized official.

NPPES Registry Identity

NPI1568525640
Entity TypeOrganization
Primary Taxonomy103TM1800X
Legal Business NameKEYSTONE SERVICE SYSTEMS, INC.
Location Address4391 STURBRIDGE DRHarrisburg, PA 17110-3673
Mailing Address4391 Sturbridge DrHarrisburg, PA 17110-3673 · (717) 740-2949 · Fax (717) 232-4597
Phone(717) 232-7509
Fax(717) 232-6687
Organization SubpartNo
Authorized OfficialCharles S. SweederChief Executive Officer · (717) 232-7509
Enumeration DateDecember 19, 2006
Last NPPES UpdateApril 22, 20264 updates tracked since enumeration
NPPES CertifiedApril 22, 2026
✔ NPI 1568525640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · Intellectual and Developmental DisabilitiesBehavioral Health & Social Service Providers
Taxonomy Code103TM1800X
4391 STURBRIDGE DR, Harrisburg, PA 17110
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Other Identifiers 1

Medicaid0001018356DE

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MERAKEY MIDWEST
Community/Behavioral Health
4391 STURBRIDGE DR
HARRISBURG, PA 17110
Dauphin County (215) 836-3131
TRI VALLEY CARE, INC
Case Management
4391 STURBRIDGE DR
HARRISBURG, PA 17110
Dauphin County (717) 441-9565
MERAKEY PENNSYLVANIA
Counselor
4391 STURBRIDGE DR
HARRISBURG, PA 17110
Dauphin County (215) 836-3131
MERAKEY PENNSYLVANIA
Community/Behavioral Health
4391 STURBRIDGE DR
HARRISBURG, PA 17110
Dauphin County (215) 836-3131

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Keystone Service Systems, Inc.'s NPI number?

The NPI number for Keystone Service Systems, Inc. is 1568525640. It was assigned to this organization in the NPPES registry on December 19, 2006.

Where is Keystone Service Systems, Inc. located?

Keystone Service Systems, Inc. is located at 4391 Sturbridge Dr, Harrisburg, PA 17110. The listed phone number is (717) 232-7509.

What is Keystone Service Systems, Inc.'s specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Intellectual and Developmental Disabilities, with taxonomy code 103TM1800X.

When was this NPI record last updated?

The NPPES record for Keystone Service Systems, Inc. was last updated on April 22, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.