Cassi Niccole Rainier
Cassi Niccole Rainier is a Family Nurse Practitioner provider (Nurse Practitioner) practicing in Lancaster, OH, registered in the NPPES registry with NPI 1659021467 since 2022. Practices at Fairfield Medical Associates, LLC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1659021467 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Cassi Niccole Rainier |
| Sex | Female |
| Practice address | 1781 COUNTRYSIDE DR, Lancaster, OH, 43130 |
| Phone | 7406878600 |
| Fax | 7404750598 |
| Enumeration date | 2022-03-25 |
| Last updated in NPPES | 2024-03-25 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363LF0000X | Family Nurse Practitioner | Primary | RN.400759 | OH |
Copy-ready billing details
Provider: Cassi Rainier NPI: 1659021467 Taxonomy: 363LF0000X (Family Nurse Practitioner) Address: 1781 COUNTRYSIDE DR, Lancaster, OH, 43130
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1164408258 | Michelle Graham | Individual | Family Medicine Physician | Lancaster, OH |
| 1902882095 | Sarah Alley | Individual | Family Medicine Physician | Lancaster, OH |
| 1740317981 | Fairfield Medical Associates, LLC | Organization | Family Medicine Physician | Lancaster, OH |
| 1225360704 | Jennifer Goodwin | Individual | Physician Assistant | Lancaster, OH |
| 1447715081 | Michele Messerly | Individual | Family Nurse Practitioner | Lancaster, OH |
Verify this record
Cross-check NPI 1659021467 against the authoritative CMS record: view Cassi Niccole Rainier 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 2024-03-25.