Charles Eby, MD
Charles Eby, MD is a Blood Banking & Transfusion Medicine Physician in Saint Louis, MO, registered under NPI 1457377764.
Getting there
The practice address on file is 4921 PARKVIEW PL DIV PA LAB AND GENOMIC MED, STE 4E, Saint Louis, MO 63110. 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 |
|---|---|---|
| R6J04 | MO | Blood Banking & Transfusion Medicine… primary |
This provider holds licence R6J04 issued in MO. 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 - Pathology
- PAC ID
- 9234284571
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Missouri | I20090910000016 | Practitioner - Pathology |
| Illinois | I20240214004253 | Practitioner - Pathology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Pathology. There are 2 separate enrolment records across 2 states (MO, IL). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 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
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 | 1457377764 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 14, 2006 |
| Last updated | Apr 17, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
4921 PARKVIEW PL DIV PA LAB AND GENOMIC MED, STE 4E Saint Louis, MO 63110 (314) 362-5641 Fax (314) 362-0369 |
| Mailing address |
PO BOX 7412011 Chicago, IL 60674 |
| Other identifiers |
203006531
· Medicaid (MO) |
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 | 5 | 7 | 3 | 7 | 7 | 7 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 6 | 7 | 5 | 7 | 3 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.