Louisa Mazza-Hilway MD
About this NPIWhat this record shows.
NPI 1225591423 is registered to Louisa Mazza-Hilway MD, a Emergency Medicine practising at 703 Main St in Paterson, New Jersey. Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Louisa Mazza-Hilway MD has been enumerated in the National Provider Identifier (NPI) registry since 2019.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20211220000957Emergency MedicineNJ
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Louisa Mazza-Hilway MD accepts. To confirm in-network status with your specific health plan, contact Louisa Mazza-Hilway MD directly at (973) 754-2000.
Frequently asked
Yes. NPI 1225591423 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (973) 754-2000.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Louisa Mazza-Hilway MD is a Type-1 individual NPI.