Dr. William O'brien DDS
About this NPIWhat this record shows.
NPI 1285657957 is registered to Dr. William O'brien DDS, a Prosthodontics practising at 5900 N Port Washington Rd, Suite B262 in Milwaukee, Wisconsin. Prosthodontics is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. William O'brien DDS has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
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 Dr. William O'brien DDS accepts. To confirm in-network status with your specific health plan, contact Dr. William O'brien DDS directly at (414) 332-7450.
Frequently asked
Yes. NPI 1285657957 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Prosthodontics 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 (414) 332-7450.
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. Dr. William O'brien DDS is a Type-1 individual NPI.