Louisa Mazza-Hilway, MD
NPI 1225591423ActiveIndividual· Emergency Medicine· Paterson, NJ
Emergency Medicine (MD) in Paterson, New Jersey, trained at Rutgers New Jersey Medical School (class of 2019). 234 Medicare patients in 2024, $32,367 paid; nearly all of their 93 Part D prescriptions were generic (90%).
Overview
| NPI | 1225591423 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 13, 2019 |
| Last updated in NPPES | Apr 19, 2022 |
| Certified by provider | Apr 19, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 25MA11282700 | NJ |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Emergency Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 270 across 21 procedure codes |
| Paid by Medicare | $32,367 |
Part D prescriptions in 2024
| Prescriptions (claims) | 93 · 103 30-day fills |
|---|---|
| Patients | 71 |
| Total drug cost | $2,628 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Emergency Medicine |
Medical group
- Passaic River Physicians LLCWayne, NJ · 59 clinicians
Hospital affiliation
- St Joseph's University Medical Center IncPaterson, NJ
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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