Karen Chiu, MD
Karen Chiu, MD is a Hospitalist Physician in Glenview, IL, registered under NPI 1003099953. This provider registers 2 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
Here is what surrounds this office in Glenview, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 731 ft away. The nearest transit stop is 0.29 mi away, served by Glenbrook South High School.
Getting here and what is nearby
Transit Glenbrook Hospital 161 ft ~1 min
Parking Green Parking Lot 267 ft ~2 min
Parking Yellow Parking Lot 669 ft ~3 min
Parking 731 ft ~3 min
Transit Glenbrook Hospital Drive & Pfingsten 0.25 mi ~5 min
Transit Glenbrook South High School 0.29 mi ~6 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 036123767 | IL | Internal Medicine Physician |
| 036123767 | IL | Hospitalist Physician primary |
This provider holds licence 036123767 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
- Practitioner - Hospitalist
- PAC ID
- 9638222664
- Enrollment ID
- I20090807000568
Medicare enrolment is recorded as approved under the provider type Practitioner - Hospitalist. 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 Hospitalist covers
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
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 | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | 036123767 | IL | |
| 208M00000X | Hospitalist Physician | 036123767 | IL | primary |
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 | 1003099953 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 14, 2007 |
| Last updated | Oct 11, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MD |
| Practice address |
2100 PFINGSTEN RD STE 3001A Glenview, IL 60026 (847) 657-5840 Fax (847) 657-5732 |
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 | 0 | 0 | 3 | 0 | 9 | 9 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 9 | 9 | 1 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.