Mrs. Ruth Alicia Duffield, FNP0
Mrs. Ruth Alicia Duffield is a Family Nurse Practitioner provider (Nurse Practitioner) practicing in Eugene, OR, registered in the NPPES registry with NPI 1790843142 since 2006. The credential FNP stands for Family Nurse Practitioner. Practices at Diane L Baird MD PC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1790843142 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mrs. Ruth Alicia Duffield |
| Credential | FNP0 |
| Sex | Female |
| Practice address | Eugene, OR, 97401 |
| Phone | 5034943333 |
| Enumeration date | 2006-12-05 |
| Last updated in NPPES | 2018-10-02 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363LF0000X | Family Nurse Practitioner | Primary | 201601784NP-PP | OR |
FNP — Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| R187883 | Other | — | MEDICARE |
Copy-ready billing details
Provider: Ruth Duffield, FNP0 NPI: 1790843142 Taxonomy: 363LF0000X (Family Nurse Practitioner) Address: Eugene, OR, 97401
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1750447546 | Diane L Baird MD PC | Organization | Dermatology Physician | Eugene, OR |
| 1659411379 | Anita Dekker | Individual | Occupational Medicine Physician | Eugene, OR |
Verify this record
Cross-check NPI 1790843142 against the authoritative CMS record: view Mrs. Ruth Alicia Duffield 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-10-02.