Alexander Chien MD
About this NPIWhat this record shows.
NPI 1255313318 is registered to Alexander Chien MD, a Diagnostic Radiology practising at 1798 N Garey Ave in Pomona, California. Diagnostic Radiology uses medical imaging (X-ray, CT, MRI, ultrasound, and nuclear medicine) to diagnose disease and injury. Alexander Chien MD has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 2 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 5,572 Diagnostic Radiology providers on file in California.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20050610000728Diagnostic RadiologyCA
- I20251218003589Diagnostic RadiologyTN
Source: CMS PECOS public enrollment file.
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 Alexander Chien MD accepts. To confirm in-network status with your specific health plan, contact Alexander Chien MD directly at (909) 865-9500.
Frequently asked
Yes. NPI 1255313318 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Diagnostic Radiology uses medical imaging (X-ray, CT, MRI, ultrasound, and nuclear medicine) to diagnose disease and injury.
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) 865-9500.
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. Alexander Chien MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 5,572 Diagnostic Radiology providers are registered in California, and Alexander Chien MD is one of them. The figure refreshes each month from the federal source.