Marissa Jenise Tadi, NP
NPI 1245754258ActiveIndividual· Nurse Practitioner· Irvine, CA
Nurse Practitioner (NP) with City of Hope Medical Foundation and 1 other group, practicing in Irvine, California. Their prescriptions cost Medicare Part D more than their services did: $1,334,952 for 375 claims, against $25,282 paid for services in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $139.84 in all, mostly food and beverage.
Overview
| NPI | 1245754258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Aug 1, 2017 |
| Last updated in NPPES | Aug 29, 2022 |
| Certified by provider | Aug 29, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 95007044 | 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 | 156 |
|---|---|
| Services billed | 407 across 19 procedure codes |
| Paid by Medicare | $25,282 |
Part D prescriptions in 2024
| Prescriptions (claims) | 375 · 555 30-day fills |
|---|---|
| Patients | 106 |
| Total drug cost | $1,334,952 |
| Generic share | 66% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
- California Cancer Associates for Research and Excellence IncSan Diego, CA · 65 clinicians
Industry payments (Open Payments)
- 2025$139.84 · 6 payments from 4 companies
- 2024$207.10 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $74.24 | 3 |
| Glaxosmithkline, LLC. | $34.67 | 1 |
| Genmab U.S., Inc. | $16.98 | 1 |
| Pfizer Inc. | $13.95 | 1 |
What the 2025 payments were for
- Food and Beverage$139.84 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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