Margaret Oshai, RN
Margaret Oshai, RN is a Diabetes Educator Registered Nurse in Frederick, MD, registered under NPI 1124454699. This provider registers 6 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 6615 BABAK DR, Frederick, MD 21702. 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 |
|---|---|---|
| R193398 | MD | Diabetes Educator Registered Nurse primary |
| R193398 | MD | Continuing Education/Staff Development… |
| R193398 | MD | Community Health Registered Nurse |
| R193398 | MD | General Practice Registered Nurse |
| 193398 | MD | Registered Nurse |
| RN193398 | MD | Administrator Registered Nurse |
This provider holds licence R193398 issued in MD. 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 Diabetes Educator covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WD0400X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WD0400X | Diabetes Educator Registered Nurse Diabetes Educator | R193398 | MD | primary |
| 163WC1600X | Continuing Education/Staff Development Registered Nurse Continuing Education/Staff Development | R193398 | MD | |
| 163WC1500X | Community Health Registered Nurse Community Health | R193398 | MD | |
| 163WG0000X | General Practice Registered Nurse General Practice | R193398 | MD | |
| 163W00000X | Registered Nurse | 193398 | MD | |
| 163WA2000X | Administrator Registered Nurse Administrator | RN193398 | MD |
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 | 1124454699 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 17, 2013 |
| Last updated | Sep 25, 2020 |
| Status | Active |
| Sole proprietor | No |
| Credential | RN |
| Practice address |
6615 BABAK DR Frederick, MD 21702 (240) 831-1660 Fax (301) 662-1342 |
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 | 4 | 5 | 4 | 6 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 8 | 5 | 8 | 6 | 9 |
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.