William Knowlton PHD
About this NPIWhat this record shows.
NPI 1497780332 is registered to William Knowlton PHD, a Clinical Psychologist practising at 10333 El Camino Real in Atascadero, California. Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. William Knowlton PHD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
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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 William Knowlton PHD accepts. To confirm in-network status with your specific health plan, contact William Knowlton PHD directly at (805) 468-2000.
Frequently asked
Yes. NPI 1497780332 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Psychologist 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 (805) 468-2000.
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. William Knowlton PHD is a Type-1 individual NPI.