Joanne Pei-Jie Chien, NP
NPI 1629399449ActiveIndividual· Nurse Practitioner· Stanford, CA
Nurse Practitioner (NP) with Stanford Health Care, practicing in Stanford, California. Their prescriptions cost Medicare Part D more than their services did: $5,094,428 for 1,623 claims, against $77,421 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 3 companies reporting payments in 2025, $83.22 in all, mostly food and beverage. Lists Stanford Health Care and 1 other hospital as hospital affiliations.
Overview
| NPI | 1629399449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Jun 16, 2010 |
| Last updated in NPPES | Dec 30, 2025 |
| Certified by provider | Dec 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 18364 | CA |
| Nurse Practitioner, Adult Health | 363LA2200X | 18364 | 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 | 284 |
|---|---|
| Services billed | 750 across 4 procedure codes |
| Paid by Medicare | $77,421 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,623 · 2,051 30-day fills |
|---|---|
| Patients | 267 |
| Total drug cost | $5,094,428 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| 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$83.22 · 3 payments from 3 companies
- 2024$326.97 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $31.85 | 1 |
| Pfizer Inc. | $26.53 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $24.84 | 1 |
What the 2025 payments were for
- Food and Beverage$83.22 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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