DR. WILLIAM ALIAN WALKER MD NPI 1144209446

NPI Information

  • NPI: 1144209446
  • Provider Name: DR. WILLIAM ALIAN WALKER, MD
  • Classification: Pediatrics - 2080P0206X
  • Specialization: Pediatric Gastroenterology
  • Entity Type: Individual
  • Address: 55 FRUIT STREET B114 3501
    MASSACHUSETTS GENERAL HOSPITAL
    BOSTON, MA
    ZIP 02114
  • Phone: (617) 726-7988

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NPI Details

DR. William Alian Walker, MD is a pediatric gastroenterology pediatrics in Boston, MA. The provider is a pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs. DR. William Alian Walker, MD NPI is 1144209446. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

55 FRUIT STREET B114 3501
MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA
ZIP 02114
Phone: (617) 726-7988
Fax: (617) 724-1731

The enumeration date for this NPI number is 1/13/2006 and was last updated on 7/8/2007.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
12080P0206XPediatricsPediatric Gastroenterology31989MASSACHUSETTSYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1B76741MEDICARE UPIN

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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