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About this NPIWhat this record shows.
NPI 1043204472 is registered to William Claussen DDS, a Dentist practising at 2229 Santa Clara Ave in Alameda, California. Dentist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. William Claussen DDS has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans William Claussen DDS accepts. To confirm in-network status with your specific health plan, contact William Claussen DDS directly at (510) 522-1945.
Frequently asked
Yes. NPI 1043204472 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Dentist 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 (510) 522-1945.
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. William Claussen DDS is a Type-1 individual NPI.
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