Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Keystone Service Systems, Inc

Organization Intellectual & Developmental Disabilities Psychologist · NPI 1568525640

Keystone Service Systems, Inc is an Intellectual & Developmental Disabilities Psychologist in Harrisburg, Pennsylvania. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

4391 Sturbridge Dr
Harrisburg, PA 17110-3673
Phone: (717) 232-7509
Fax: (717) 232-6687
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Intellectual & Developmental Disabilities Psychologist (primary) Taxonomy 103TM1800X

Record details

NPI number1568525640
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Charles Sweeder — Chief Executive Officer · (717) 232-7509
NPI enumeratedDecember 19, 2006
Last updated in NPPESApril 22, 2026
Certification dateApril 22, 2026
Mailing address4391 Sturbridge Dr, Harrisburg, PA 17110-3673