DR. William Siegel, MD is a hematology and oncology internal medicine in Salt Lake City, UT. The provider is an internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered. DR. William Siegel, MD NPI is 1164512216. 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:
4021 S 700 E SUITE 300 SALT LAKE CITY, UT ZIP 84107-192 Phone: (800) 453-3030
The enumeration date for this NPI number is 10/12/2006 and was last updated on 3/6/2018.
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:
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
NPI Synchronization or Removal
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