Mavis Freeman
Mavis Freeman is a Critical Care Medicine Registered Nurse in El Sobrante, CA, registered under NPI 1518839398. This provider registers 12 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 3905 SAN PABLO DAM RD, El Sobrante, CA 94803. 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 |
|---|---|---|
| 728470 | CA | Administrator Registered Nurse |
| 28286205C | IN | Critical Care Medicine Registered Nurse |
| 728470 | CA | Case Management Registered Nurse |
| 728470 | CA | Community Health Registered Nurse |
| 728470 | CA | Continuing Education/Staff Development… |
| 728470 | CA | Child & Adolescent Psychiatric/Mental… |
| 728470 | CA | Psychiatric/Mental Health Registered Nurse |
| 728470 | CA | Adult Psychiatric/Mental Health… |
| 728470 | CA | Wound Care Registered Nurse |
| 728470 | CA | Ostomy Care Registered Nurse |
| 728470 | CA | Case Manager/Care Coordinator |
| 728470 | CA | Developmentally Disabled Services Day… |
| 728470 | CA | Critical Care Medicine Registered Nurse primary |
Licences are recorded in 2 states: CA, IN. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: California and Indiana. The practice address on file is in El Sobrante, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 728470
- Specialty
- Administrator Registered Nurse
- Licence
- 28286205C
- Specialty
- Critical Care Medicine Registered Nurse
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Critical Care Medicine covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WC0200X
All registered taxonomy codes
This provider registers 13 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WA2000X | Administrator Registered Nurse Administrator | 728470 | CA | |
| 163WC0200X | Critical Care Medicine Registered Nurse Critical Care Medicine | 28286205C | IN | |
| 163WC0400X | Case Management Registered Nurse Case Management | 728470 | CA | |
| 163WC1500X | Community Health Registered Nurse Community Health | 728470 | CA | |
| 163WC1600X | Continuing Education/Staff Development Registered Nurse Continuing Education/Staff Development | 728470 | CA | |
| 163WP0807X | Child & Adolescent Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health, Child & Adolescent | 728470 | CA | |
| 163WP0808X | Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health | 728470 | CA | |
| 163WP0809X | Adult Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health, Adult | 728470 | CA | |
| 163WW0000X | Wound Care Registered Nurse Wound Care | 728470 | CA | |
| 163WX1500X | Ostomy Care Registered Nurse Ostomy Care | 728470 | CA | |
| 171M00000X | Case Manager/Care Coordinator | 728470 | CA | |
| 251C00000X | Developmentally Disabled Services Day Training Agency | 728470 | CA | |
| 163WC0200X | Critical Care Medicine Registered Nurse Critical Care Medicine | 728470 | CA | primary |
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 | 1518839398 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 22, 2025 |
| Last updated | Sep 22, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
3905 SAN PABLO DAM RD El Sobrante, CA 94803 (510) 390-5467 Fax (510) 229-3022 |
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 | 5 | 1 | 8 | 8 | 3 | 9 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 2 | 8 | 7 | 3 | 9 | 3 | 9 |
Sum = 72 · next multiple of 10 = 80 · check digit = 8 · actual last digit = 8
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.