Dr. William Walker MD
About this NPIWhat this record shows.
NPI 1144209446 is registered to Dr. William Walker MD, a Pediatric Gastroenterology Physician practising at 55 Fruit Street B114 3501, Massachusetts General Hospital in Boston, Massachusetts. Pediatric Gastroenterology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. 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 Dr. William Walker MD accepts. To confirm in-network status with your specific health plan, contact Dr. William Walker MD directly at (617) 726-7988.
Frequently asked
Yes. NPI 1144209446 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Pediatric Gastroenterology 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 (617) 726-7988.
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. William Walker MD is a Type-1 individual NPI.