Katie Chen, NP
NPI 1528714011ActiveIndividual· Nurse Practitioner, Acute Care· La Jolla, CA
Nurse Practitioner, Acute Care (NP) in La Jolla, California, licensed in CA, with an NPI issued in February 2022. Their prescriptions cost Medicare Part D more than their services did: $432,409 for 3,208 claims, against $2,666 paid for services in 2024. Biogen, Inc. was the largest of 5 companies reporting payments in 2025, $429.56 in all, mostly food and beverage.
Overview
| NPI | 1528714011 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Feb 23, 2022 |
| Last updated in NPPES | Oct 12, 2024 |
| Certified by provider | Oct 12, 2024 |
| Reactivated | Mar 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | 95019941 | 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); Practitioner - Nurse Practitioner (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 37 |
|---|---|
| Services billed | 116 across 10 procedure codes |
| Paid by Medicare | $2,666 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,208 · 3,861 30-day fills |
|---|---|
| Patients | 534 |
| Total drug cost | $432,409 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Industry payments (Open Payments)
- 2025$429.56 · 7 payments from 5 companies
- 2024$867.99 · 37 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $125.00 | 1 |
| Argenx US, Inc. | $125.00 | 1 |
| Pfizer Inc. | $90.23 | 1 |
| Depuy Synthes Sales Inc. | $56.63 | 3 |
| Mml US, Inc. | $32.70 | 1 |
What the 2025 payments were for
- Food and Beverage$429.56 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 acute care nurse practitioners in La Jolla · All acute care nurse practitioners in California