Curtis Siu MD INC
About this NPIWhat this record shows.
NPI 1316880586 is registered to Curtis Siu MD INC, a healthcare organisation classified as "Internal Medicine" and located at 23521 Paseo De Valencia Ste 108 in Laguna Hills, California. The organisation's authorised official is Curtis Siu. The organisation has been enumerated in the NPI registry since 2026.
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 Curtis Siu MD INC accepts. To confirm in-network status with your specific health plan, contact Curtis Siu MD INC directly at (949) 588-7262.
Frequently asked
Yes. NPI 1316880586 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
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 (949) 588-7262.
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. Curtis Siu MD INC is a Type-2 organisational NPI.