Diana Lynne Williams, FNP
NPI 1174025886ActiveIndividual· Nurse Practitioner, Family· Los Alamitos, CA
Nurse Practitioner, Family (FNP) with Oneil Enterprises Inc, practicing in Los Alamitos, California. Mostly services rather than prescriptions: Medicare paid $1,697 for 15 patients in 2024, with only 29 Part D claims.
Overview
| NPI | 1174025886 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Mar 8, 2018 |
| Last updated in NPPES | Apr 5, 2018 |
| Reactivated | Apr 5, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 95008594 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 15 |
|---|---|
| Services billed | 71 across 12 procedure codes |
| Paid by Medicare | $1,697 |
Part D prescriptions in 2024
| Prescriptions (claims) | 29 · 29 30-day fills |
|---|---|
| Patients | 20 |
| Total drug cost | $94.56 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Oneil Enterprises IncCypress, CA · 16 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 family nurse practitioners in Los Alamitos · All family nurse practitioners in California