Karen Popp, N.P.
NPI 1588744791ActiveIndividual· Nurse Practitioner, Family· Thousand Oaks, CA
Nurse Practitioner, Family (N.P.) with Primary Medical Group of Ventura County Inc, practicing in Thousand Oaks, California. Their prescriptions cost Medicare Part D more than their services did: $108,156 for 2,982 claims, against $35,621 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 9 companies reporting payments in 2025, $356.41 in all, mostly food and beverage. Lists Community Memorial Hospital - Ventura as a hospital affiliation.
Overview
| NPI | 1588744791 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | N.P. |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Feb 26, 2020 |
| Certified by provider | Feb 26, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 12019 | CA |
| Registered Nurse | 163W00000X | 515438 | CA |
| Registered Nurse, Administrator | 163WA2000X | 12019 | 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 | 167 |
|---|---|
| Services billed | 591 across 33 procedure codes |
| Paid by Medicare | $35,621 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,982 · 7,013 30-day fills |
|---|---|
| Patients | 390 |
| Total drug cost | $108,156 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Primary Medical Group of Ventura County IncVentura, CA · 41 clinicians
Hospital affiliation
- Community Memorial Hospital - VenturaVentura, CA
Industry payments (Open Payments)
- 2025$356.41 · 15 payments from 9 companies
- 2024$209.07 · 12 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $85.04 | 3 |
| Abiomed | $66.70 | 2 |
| Astrazeneca Pharmaceuticals LP | $42.49 | 2 |
| Pfizer Inc. | $41.44 | 2 |
| Novo Nordisk Inc | $40.35 | 2 |
What the 2025 payments were for
- Food and Beverage$356.41 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 45 family nurse practitioners in Thousand Oaks · All family nurse practitioners in California