HEALTHCARE ALTERNATIVE SYSTEMS, INC.
HEALTHCARE ALTERNATIVE SYSTEMS, INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1801097100, based in Chicago, IL. The organization lists 2 taxonomy classifications, with Substance Use Disorder Rehabilitation Clinic/Center recorded as primary.
Getting there
The practice address on file is 4734 W CHICAGO AVE, Chicago, IL 60651. 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-0589-0010-A | IL | Substance Use Disorder Rehabilitation… primary |
| A-0589-0010-A | IL | Methadone Clinic |
This provider holds licence A-0589-0010-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.
- Status
- Approved
- Provider type
- Part B Supplier - Opioid Treatment Program (otp)
- PAC ID
- 1951730647
- Enrollment ID
- O20200401000036
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Opioid Treatment Program (otp). Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Rehabilitation, Substance Use Disorder covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QR0405X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261QR0405X | Substance Use Disorder Rehabilitation Clinic/Center Rehabilitation, Substance Use Disorder | A-0589-0010-A | IL | primary |
| 261QM2800X | Methadone Clinic Methadone | A-0589-0010-A | IL |
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 | 1801097100 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | May 31, 2007 |
| Last updated | Dec 17, 2024 |
| Status | Active |
| Practice address |
4734 W CHICAGO AVE Chicago, IL 60651 (773) 252-3100 |
| Other identifiers |
A-0589-0010-A
· Other (IL) A-0589-0020-A · Other (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 | 8 | 0 | 1 | 0 | 9 | 7 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 0 | 1 | 0 | 9 | 5 | 1 | 0 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.