Ernestina Mcgrew, RN
Ernestina Mcgrew, RN is a Registered Nurse in Riverside, CA, registered under NPI 1013530534. This provider registers 8 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2085 RUSTIN AVE, Riverside, CA 92507. 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 |
|---|---|---|
| 693114 | CA | Registered Nurse primary |
| 693114 | CA | Addiction (Substance Use Disorder)… |
| 693114 | CA | Case Management Registered Nurse |
| 693114 | CA | Community Health Registered Nurse |
| 693114 | CA | Gerontology Registered Nurse |
| 693114 | CA | Pediatric Registered Nurse |
| 693114 | CA | Psychiatric/Mental Health Registered Nurse |
| 693114 | CA | Rehabilitation Registered Nurse |
This provider holds licence 693114 issued in CA. 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 covers
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span. NUCC Health Care Provider Taxonomy, code 163W00000X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163W00000X | Registered Nurse | 693114 | CA | primary |
| 163WA0400X | Addiction (Substance Use Disorder) Registered Nurse Addiction (Substance Use Disorder) | 693114 | CA | |
| 163WC0400X | Case Management Registered Nurse Case Management | 693114 | CA | |
| 163WC1500X | Community Health Registered Nurse Community Health | 693114 | CA | |
| 163WG0600X | Gerontology Registered Nurse Gerontology | 693114 | CA | |
| 163WP0200X | Pediatric Registered Nurse Pediatrics | 693114 | CA | |
| 163WP0808X | Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health | 693114 | CA | |
| 163WR0400X | Rehabilitation Registered Nurse Rehabilitation | 693114 | CA |
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 | 1013530534 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 19, 2020 |
| Last updated | May 19, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | RN |
| Practice address |
2085 RUSTIN AVE Riverside, CA 92507 (951) 955-2105 |
| Mailing address |
14192 SAN CRISTOBAL BAY DR Moreno Valley, CA 92553 |
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 | 0 | 1 | 3 | 5 | 3 | 0 | 5 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 2 | 3 | 1 | 3 | 0 | 5 | 6 |
Sum = 46 · next multiple of 10 = 50 · 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.