William Walker MD
About this NPIWhat this record shows.
NPI 1558300392 is registered to William Walker MD, a Critical Care Medicine (Internal Medicine) Physician practising at 300 1st Capitol Dr in Saint Charles, Missouri. Critical Care Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. William Walker MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
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 William Walker MD accepts. To confirm in-network status with your specific health plan, contact William Walker MD directly at (636) 947-5000.
Frequently asked
Yes. NPI 1558300392 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Critical Care Medicine (Internal Medicine) 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 (636) 947-5000.
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 Walker MD is a Type-1 individual NPI.