Judith Diaz Sierra
About this NPIWhat this record shows.
NPI 1891394151 is registered to Judith Diaz Sierra, a Behavior Analyst practising at 313 Lennon Ln Ste 100 in Walnut Creek, California. Behavior Analyst is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Judith Diaz Sierra has been enumerated in the National Provider Identifier (NPI) registry since 2020.
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 Judith Diaz Sierra accepts. To confirm in-network status with your specific health plan, contact Judith Diaz Sierra directly at (925) 465-1585.
Frequently asked
Yes. NPI 1891394151 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Behavior Analyst 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) 465-1585.
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. Judith Diaz Sierra is a Type-1 individual NPI.