Dr. John Williams PSY.D.
About this NPIWhat this record shows.
NPI 1265600662 is registered to Dr. John Williams PSY.D., a Clinical Psychologist practising at 1080 Concannon Blvd, Suite 170 in Livermore, California. Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. John Williams PSY.D. has been enumerated in the National Provider Identifier (NPI) registry since 2008.
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. John Williams PSY.D. accepts. To confirm in-network status with your specific health plan, contact Dr. John Williams PSY.D. directly at (925) 918-2469.
Frequently asked
Yes. NPI 1265600662 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 (925) 918-2469.
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. John Williams PSY.D. is a Type-1 individual NPI.