Louisa Pangilinan Ustrzynski, DNP
NPI 1346627767ActiveIndividual· Nurse Practitioner· Stanford, CA
Nurse Practitioner (DNP) with Stanford Health Care, practicing in Stanford, California. 167 Medicare patients in 2024, $23,521 paid; all of their 51 Part D prescriptions were generic. Amarin Pharma, Inc. reported $117.78 in payments in 2025, mostly food and beverage. Lists Stanford Health Care and 1 other hospital as hospital affiliations.
Overview
| NPI | 1346627767 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP |
| Sole proprietor | No |
| NPI issued | May 5, 2015 |
| Last updated in NPPES | Dec 30, 2025 |
| Certified by provider | Dec 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 95002676 | CA |
| Registered Nurse | 163W00000X | 777746 | CA |
| Nurse Practitioner, Adult Health | 363LA2200X | 95002676 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 167 |
|---|---|
| Services billed | 265 across 7 procedure codes |
| Paid by Medicare | $23,521 |
Part D prescriptions in 2024
| Prescriptions (claims) | 51 · 79 30-day fills |
|---|---|
| Patients | 24 |
| Total drug cost | $2,823 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$117.78 · 1 payment from 1 company
- 2024$1,217 · 8 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amarin Pharma, Inc. | $117.78 | 1 |
What the 2025 payments were for
- Food and Beverage$117.78 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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