Dr. Diana Mah PSY.D.
About this NPIWhat this record shows.
NPI 1023321734 is registered to Dr. Diana Mah PSY.D., a Psychologist practising at 850 E Foothill Blvd in Rialto, California. Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Diana Mah PSY.D. has been enumerated in the National Provider Identifier (NPI) registry since 2010.
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. Diana Mah PSY.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Diana Mah PSY.D. directly at (909) 421-9380.
Frequently asked
Yes. NPI 1023321734 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
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 (909) 421-9380.
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. Diana Mah PSY.D. is a Type-1 individual NPI.