Sheri Ann Loo, NP
NPI 1932627221ActiveIndividual· Nurse Practitioner· Stanford, CA
Nurse Practitioner (NP) with Stanford Health Care and 1 other group, practicing in Stanford, California. 106 Medicare patients in 2024, $9,174 paid; nearly all of their 140 Part D prescriptions were generic (98%). Argenx US, Inc. was the largest of 3 companies reporting payments in 2025, $343.00 in all, mostly food and beverage. Lists Salinas Valley Health Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1932627221 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Sep 6, 2017 |
| Last updated in NPPES | Dec 30, 2025 |
| Certified by provider | Dec 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 95007282 | CA |
| Nurse Practitioner, Adult Health | 363LA2200X | 95007282 | 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 | 106 |
|---|---|
| Services billed | 123 across 10 procedure codes |
| Paid by Medicare | $9,174 |
Part D prescriptions in 2024
| Prescriptions (claims) | 140 · 146 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $2,293 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Stanford Health CareStanford, CA · 3,122 clinicians
- David B. HammerTempleton, CA · 123 clinicians
Hospital affiliations
- Salinas Valley Health Medical CenterSalinas, CA
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$343.00 · 3 payments from 3 companies
- 2024$368.18 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Argenx US, Inc. | $121.82 | 1 |
| Amarin Pharma, Inc. | $117.78 | 1 |
| Corcept Therapeutics | $103.40 | 1 |
What the 2025 payments were for
- Food and Beverage$343.00 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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