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

Keystone Service Systems, Inc

Organization Community/Behavioral Health Agency · NPI 1942442074

Keystone Service Systems, Inc is a Community/Behavioral Health Agency in Hummelstown, Pennsylvania. Registered with an NPI since 2009.

In the registry since
2009
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

8182 Adams Dr
Hummelstown, PA 17036-8624
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

Community/Behavioral Health Agency (primary) Taxonomy 251S00000X

Record details

NPI number1942442074
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Charles Hooker — Ceo · (717) 232-7509
NPI enumeratedApril 6, 2009
Last updated in NPPESMarch 15, 2021
Certification dateMarch 15, 2021
Mailing address4391 Sturbridge Dr, Harrisburg, PA 17110-3673

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