First Assistant Nurses
First Assistant Nurses is a healthcare organization registered as Registered Nurse First Assistant in Mission Viejo, CA, holding Type 2 (organization) NPI 1821796244 since 2023. The authorized official on file is Leslie Jansen, Rnfa.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821796244 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | First Assistant Nurses |
| Practice address | 26651 LAS TUNAS DR, Mission Viejo, CA, 92692 |
| Phone | 9493956661 |
| Fax | 9493834808 |
| Enumeration date | 2023-02-16 |
| Last updated in NPPES | 2023-02-16 |
Authorized official
| Name | Leslie Jansen |
|---|---|
| Title | Rnfa |
| Phone | 9493956661 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 163WR0006X | Registered Nurse First Assistant | Primary | — | — |
Copy-ready billing details
Provider: First Assistant Nurses NPI: 1821796244 Taxonomy: 163WR0006X (Registered Nurse First Assistant) Address: 26651 LAS TUNAS DR, Mission Viejo, CA, 92692
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1992726715 | Leslie Jansen | Individual | Registered Nurse First Assistant | Mission Viejo, CA |
Verify this record
Cross-check NPI 1821796244 against the authoritative CMS record: view First Assistant Nurses on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What is a Type 2 NPI?
What type of organization is First Assistant Nurses?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-02-16.