Charlaine Ida Williamson, NP
NPI 1932408960ActiveIndividual· Nurse Practitioner, Family· Rancho Cucamonga, CA
Nurse Practitioner, Family (NP) with Providence Medical Foundation, practicing in Rancho Cucamonga, California. Their prescriptions cost Medicare Part D more than their services did: $1,385,083 for 2,608 claims, against $46,951 paid for services in 2024. Recordati_rare_diseases_inc. was the largest of 22 companies reporting payments in 2025, $979.49 in all, mostly food and beverage. Lists Providence St. Jude Medical Center as a hospital affiliation.
Overview
| NPI | 1932408960 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Mar 16, 2011 |
| Last updated in NPPES | Apr 13, 2021 |
| Certified by provider | Apr 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 19923 | 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 | 292 |
|---|---|
| Services billed | 807 across 35 procedure codes |
| Paid by Medicare | $46,951 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,608 · 6,199 30-day fills |
|---|---|
| Patients | 497 |
| Total drug cost | $1,385,083 |
| Generic share | 41% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$979.49 · 44 payments from 22 companies
- 2024$2,660 · 102 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Recordati_rare_diseases_inc. | $147.62 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $111.67 | 5 |
| Novartis Pharmaceuticals Corporation | $83.96 | 4 |
| Abbvie Inc. | $72.72 | 4 |
| Corcept Therapeutics | $59.16 | 2 |
What the 2025 payments were for
- Food and Beverage$979.49 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 95 family nurse practitioners in Rancho Cucamonga · All family nurse practitioners in California