MERCY CLINIC ST. LOUIS CANCER AND BREAST INSTITUTE, LLC
MERCY CLINIC ST. LOUIS CANCER AND BREAST INSTITUTE, LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1891946349, based in Saint Louis, MO. The organization lists 4 taxonomy classifications, with Surgical Oncology Physician recorded as primary.
Getting there
The practice address on file is 621 S NEW BALLAS RD STE 260A, Saint Louis, MO 63141. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 9739240037
- Enrollment ID
- O20081204000867
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Surgical Oncology covers
A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research. NUCC Health Care Provider Taxonomy, code 2086X0206X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2086X0206X | Surgical Oncology Physician Surgical Oncology | — | — | primary |
| 207RH0000X | Hematology (Internal Medicine) Physician Hematology | — | — | |
| 207RX0202X | Medical Oncology Physician Medical Oncology | — | — | |
| 2085R0001X | Radiation Oncology Physician Radiation Oncology | — | — |
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 | 1891946349 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 2, 2008 |
| Last updated | Apr 25, 2025 |
| Status | Active |
| Practice address |
621 S NEW BALLAS RD STE 260A Saint Louis, MO 63141 (314) 251-8001 Fax (314) 256-5043 |
| Mailing address |
15945 CLAYTON RD SUITE 120 Ballwin, MO 63011 |
| Other identifiers |
504721903
· 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 | 8 | 9 | 1 | 9 | 4 | 6 | 3 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 9 | 1 | 9 | 4 | 3 | 3 | 8 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.