William D. Mosier, M.D., Inc., A Professional Medical Corporation
About this NPIWhat this record shows.
NPI 1003476508 is registered to William D. Mosier, M.D., Inc., A Professional Medical Corporation, a healthcare organisation classified as "Ophthalmology Physician" and located at 265 Laguna Rd in Fullerton, California. The organisation's authorised official is William Mosier. The organisation has been enumerated in the NPI registry since 2019.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment 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.
Part B Supplier
- O20200108000962Clinic/Group PracticeCA
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 William D. Mosier, M.D., Inc., A Professional Medical Corporation accepts. To confirm in-network status with your specific health plan, contact William D. Mosier, M.D., Inc., A Professional Medical Corporation directly at (714) 871-2570.
Frequently asked
Yes. NPI 1003476508 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Ophthalmology Physician 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 (714) 871-2570.
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. William D. Mosier, M.D., Inc., A Professional Medical Corporation is a Type-2 organisational NPI.