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Keystone Service Systems, Inc.

Intellectual & Developmental Disabilities Psychologist in Harrisburg, PA · enumerated 2006 · authorized official Charles Sweeder, Chief Executive Officer.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1568525640

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Registry record

Entity type Organization (Type 2)
Legal business name Keystone Service Systems, Inc.
Practice address 4391 Sturbridge Dr, Harrisburg, PA, 17110
Phone (717) 232-7509
Fax (717) 232-6687
Enumeration date Dec 19, 2006
Last updated in NPPES Apr 22, 2026

Taxonomy & classification

103TM1800X Intellectual & Developmental Disabilities Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Charles Sweeder
Title Chief Executive Officer
Phone (717) 232-7509

Other identifiers

Identifier Type State Issuer
0001018356 Medicaid DE -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Keystone Service Systems, Inc.?
Keystone Service Systems, Inc. is registered in NPPES as a Intellectual & Developmental Disabilities Psychologist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-22.