Marilyn Nardin, CRNFA
Marilyn Nardin, CRNFA is a Registered Nurse First Assistant in Saint Charles, MO, registered under NPI 1124289319.
Getting there
The practice address on file is 405 SAVANNAH RIDGE DR, Saint Charles, MO 63303. 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 |
|---|---|---|
| 082837 | MO | Registered Nurse First Assistant primary |
This provider holds licence 082837 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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.
What Registered Nurse First Assistant covers
A perioperative registered nurse who works in collaboration with the surgeon and other health care team members to achieve optimal outcomes. The RNFA has acquired the necessary knowledge, judgment, and skills specific to the expanded role of RNFA clinical practice. Intraoperatively, the RNFA assists the surgeon. NUCC Health Care Provider Taxonomy, code 163WR0006X
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 | 1124289319 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 19, 2008 |
| Last updated | Jun 19, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | CRNFA |
| Practice address |
405 SAVANNAH RIDGE DR Saint Charles, MO 63303 (636) 244-0704 |
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 | 1 | 2 | 4 | 2 | 8 | 9 | 3 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 4 | 8 | 9 | 3 | 2 |
Sum = 61 · next multiple of 10 = 70 · 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.