2 NPI-registered providers practice in Lewiston, California. Pick another city in the rail, or open the full search to filter by specialty and credential.
| Provider | Specialty | Location | NPI |
|---|---|---|---|
| Marie GuthrieDNP, FNP-C, RN | Family Nurse Practitioner | Lewiston, CA | 1669164190 |
| Rita GroszmannMFT | Mental Health Counselor | Lewiston, CA | 1316739311 |
Source: CMS NPPES Data Dissemination (June 2026).
