Marenna Rose Cowan, FNP-C
NPI 1063078806ActiveIndividual· Nurse Practitioner, Family· Costa Mesa, CA
Nurse Practitioner, Family (FNP-C) with Memorialcare Medical Foundation and 2 other groups, practicing in Costa Mesa, California. 72 Medicare patients in 2024, $6,534 paid; nearly all of their 177 Part D prescriptions were generic (91%). Lists Hoag Memorial Hospital Presbyterian as a hospital affiliation.
Overview
| NPI | 1063078806 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-C |
| Sole proprietor | No |
| NPI issued | May 16, 2019 |
| Last updated in NPPES | Nov 19, 2025 |
| Certified by provider | Nov 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 95009121 | CA |
| Registered Nurse | 163W00000X | 95079580 | CA |
| Nurse Practitioner | 363L00000X | 95009121 | 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 | 72 |
|---|---|
| Services billed | 100 across 16 procedure codes |
| Paid by Medicare | $6,534 |
Part D prescriptions in 2024
| Prescriptions (claims) | 177 · 179 30-day fills |
|---|---|
| Patients | 137 |
| Total drug cost | $4,560 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
- Hmts IncIrvine, CA · 118 clinicians
- Coastal Family Medicine IncIrvine, CA · 34 clinicians
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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