Carol Willis, MD
Carol Willis, MD is a Blood Banking & Transfusion Medicine Physician in Chicago, IL, registered under NPI 1467471813. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 5841 S MARYLAND AVE # MC3083, Chicago, IL 60637. 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 |
|---|---|---|
| 036141840 | IL | Blood Banking & Transfusion Medicine… primary |
| 22740 | NE | Anatomic Pathology & Clinical Pathology… |
| 42297 | CO | Anatomic Pathology & Clinical Pathology… |
| 7063A | WY | Anatomic Pathology & Clinical Pathology… |
| 5813 | SD | Anatomic Pathology & Clinical Pathology… |
Licences are recorded in 5 states: IL, NE, CO, WY, SD. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 5 states
This provider holds licences in 5 states: Colorado, Illinois, Nebraska, South Dakota and Wyoming. 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
- 42297
- Specialty
- Anatomic Pathology & Clinical Pathology…
- Licence
- 036141840
- Specialty
- Blood Banking & Transfusion Medicine…
- Licence
- 22740
- Specialty
- Anatomic Pathology & Clinical Pathology…
- Licence
- 5813
- Specialty
- Anatomic Pathology & Clinical Pathology…
- Licence
- 7063A
- Specialty
- Anatomic Pathology & Clinical Pathology…
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 Blood Banking & Transfusion Medicine covers
A physician who specializes in blood banking/transfusion medicine is responsible for the maintenance of an adequate blood supply, blood donor and patient-recipient safety and appropriate blood utilization. Pre-transfusion compatibility testing and antibody testing assure that blood transfusions, when indicated, are as safe as possible. This physician directs the preparation and safe use of specially prepared blood components, including red blood cells, white blood cells, platelets and plasma constituents, and marrow or stem cells for transplantation. NUCC Health Care Provider Taxonomy, code 207ZB0001X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207ZB0001X | Blood Banking & Transfusion Medicine Physician Blood Banking & Transfusion Medicine | 036141840 | IL | primary |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | 22740 | NE | |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | 42297 | CO | |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | 7063A | WY | |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | 5813 | SD |
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 | 1467471813 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 18, 2006 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
5841 S MARYLAND AVE # MC3083 Chicago, IL 60637 (773) 702-1439 |
| Mailing address |
180 HARVESTER DR STE 110 Burr Ridge, IL 60527 |
| Other identifiers |
806950700
· Medicaid (ID) 47053951401 · Medicaid (NE) 119945500 · Medicaid (WY) P00176481 · Other (NE) |
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 | 4 | 6 | 7 | 4 | 7 | 1 | 8 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 3 | 7 | 8 | 7 | 2 | 8 | 2 |
Sum = 67 · next multiple of 10 = 70 · 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.