Cornerstone Services Inc
Cornerstone Services Inc is a healthcare organization registered as Mental Health Clinic/Center (Including Community Mental Health Center) in Joliet, IL, holding Type 2 (organization) NPI 1205816345 since 2006. The authorized official on file is Benjamin Stortz, Chief Administrative Officer.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1205816345 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Cornerstone Services Inc |
| Practice address | 777 JOYCE RD, Joliet, IL, 60436 |
| Phone | 8157417042 |
| Fax | 8157416740 |
| Enumeration date | 2006-01-17 |
| Last updated in NPPES | 2021-06-22 |
Authorized official
| Name | Benjamin Stortz |
|---|---|
| Title | Chief Administrative Officer |
| Phone | 8157417042 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QM0801X | Mental Health Clinic/Center (Including Community Mental Health Center) | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| CG7573 | Other | — | PALMETTO GBA |
| 9919750 | Other | IL | BLUE CROSS |
Copy-ready billing details
Provider: Cornerstone Services Inc NPI: 1205816345 Taxonomy: 261QM0801X (Mental Health Clinic/Center (Including Community Mental Health Center)) Address: 777 JOYCE RD, Joliet, IL, 60436
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881854586 | Michael Malkusak | Individual | Specialist | Joliet, IL |
| 1215198106 | Nick Turton | Individual | Specialist | Joliet, IL |
| 1366687543 | William Arnold | Individual | Behavior Analyst | Joliet, IL |
| 1447570536 | Victoria Pellettiere | Individual | Behavior Analyst | Joliet, IL |
| 1518278704 | Kathryn Grella | Individual | Social Worker | Joliet, IL |
| 1740567502 | Nicole Koren | Individual | Behavior Analyst | Joliet, IL |
| 1679850184 | Mulan Dai | Individual | Behavior Analyst | Joliet, IL |
| 1710321609 | Louis Sandler | Individual | Behavior Analyst | Joliet, IL |
Verify this record
Cross-check NPI 1205816345 against the authoritative CMS record: view Cornerstone Services Inc on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
Who is the authorized official for Cornerstone Services Inc?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-06-22.