WILLIAM BRIAN DUFFY MD NPI 1568448363

NPI Information

  • NPI: 1568448363
  • Provider Name: WILLIAM BRIAN DUFFY, MD
  • Classification: Internal Medicine - 207RN0300X
  • Specialization: Nephrology
  • Entity Type: Individual
  • Address: 1101 S CANAL ST
    CHICAGO, IL
    ZIP 60607
  • Phone: (312) 986-0110

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NPI Details

William Brian Duffy, MD is a nephrology internal medicine in Chicago, IL. The provider is an internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation. William Brian Duffy, MD NPI is 1568448363. 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:

1101 S CANAL ST
CHICAGO, IL
ZIP 60607-901
Phone: (312) 986-0110
Fax: (312) 663-1010

The enumeration date for this NPI number is 12/22/2005 and was last updated on 1/3/2012.

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
1207RN0300XInternal MedicineNephrology036057381ILLINOISYes

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
101621679OTHERILLINOISBCBS OF IL
2K05443MEDICARE ID-TYPE UNSPECIFIEDILLINOISGROUP 950150
3036057381MEDICAIDILLINOIS
4D 89297MEDICARE UPINILLINOIS

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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