CHESTNUT HEALTH SYSTEMS INC
CHESTNUT HEALTH SYSTEMS INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1609144815, based in Granite City, IL. The organization lists 3 taxonomy classifications, with Substance Abuse Rehabilitation Facility recorded as primary.
Getting there
The practice address on file is 50 NORTHGATE INDUSTRIAL DR, Granite City, IL 62040. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A-0126-0001-A | IL | Substance Abuse Rehabilitation Facility primary |
This provider holds licence A-0126-0001-A issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Substance Abuse Rehabilitation Facility covers
A facility or distinct part of a facility that provides a 24 hr therapeutically planned living and rehabilitative intervention environment for the treatment of individuals with disorders in the abuse of drugs, alcohol, and other substances. NUCC Health Care Provider Taxonomy, code 324500000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 324500000X | Substance Abuse Rehabilitation Facility | A-0126-0001-A | IL | primary |
| 261QM0850X | Adult Mental Health Clinic/Center Adult Mental Health | — | — | |
| 261QM0801X | Mental Health Clinic/Center (Including Community Mental Health Center) Mental Health (Including Community Mental Health Center) | — | — |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1609144815 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 2, 2011 |
| Last updated | Mar 16, 2023 |
| Status | Active |
| Practice address |
50 NORTHGATE INDUSTRIAL DR Granite City, IL 62040 (618) 877-4420 Fax (618) 877-0904 |
| Mailing address |
1003 MARTIN LUTHER KING DR Bloomington, IL 61701 |
| Other identifiers |
C/A-0126-0001-A
· Medicaid (IL) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 0 | 9 | 1 | 4 | 4 | 8 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 0 | 9 | 2 | 4 | 8 | 8 | 2 |
Sum = 65 · next multiple of 10 = 70 · check digit = 5 · actual last digit = 5
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.