Jan Iwata, DO
Jan Iwata, DO is a Public Health & General Preventive Medicine Physician in Chicago, IL, registered under NPI 1922177351. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 1 E SUPERIOR ST 307, Chicago, IL 60611. 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 |
|---|---|---|
| 036-105234 | IL | Public Health & General Preventive… primary |
| 7541 | CA | Neuromusculoskeletal Medicine & OMM… |
| 7541 | CA | Ophthalmology Physician |
| 7541 | CA | Public Health & General Preventive… |
| 036-105234 | IL | Ophthalmology Physician |
| 036-105234 | IL | Neuromusculoskeletal Medicine & OMM… |
Licences are recorded in 2 states: IL, CA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Order And Referring Only - Preventive Medicine
- PAC ID
- 1557516424
- Enrollment ID
- I20180219001667
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Preventive Medicine. 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.
Licensed in 2 states
This provider holds licences in 2 states: California and Illinois. The practice address on file is in Chicago, IL, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 036-105234
- Specialty
- Public Health & General Preventive…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Public Health & General Preventive Medicine covers
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings. NUCC Health Care Provider Taxonomy, code 2083P0901X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2083P0901X | Public Health & General Preventive Medicine Physician Public Health & General Preventive Medicine | 036-105234 | IL | primary |
| 204D00000X | Neuromusculoskeletal Medicine & OMM Physician | 7541 | CA | |
| 207W00000X | Ophthalmology Physician | 7541 | CA | |
| 2083P0901X | Public Health & General Preventive Medicine Physician Public Health & General Preventive Medicine | 7541 | CA | |
| 207W00000X | Ophthalmology Physician | 036-105234 | IL | |
| 204D00000X | Neuromusculoskeletal Medicine & OMM Physician | 036-105234 | 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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1922177351 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 7, 2006 |
| Last updated | Jan 8, 2014 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | DO |
| Practice address |
1 E SUPERIOR ST 307 Chicago, IL 60611 (773) 501-7394 Fax (773) 296-7787 |
| Mailing address |
4600 N CLARENDON AVE 1202 Chicago, IL 60640 |
| Other identifiers |
01632904
· 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 | 9 | 2 | 2 | 1 | 7 | 7 | 3 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 4 | 2 | 2 | 7 | 5 | 3 | 1 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.