William Arnold Horton, MD is a clinical molecular genetics medical genetics in Portland, OR. The provider is a clinical molecular geneticist demonstrates competence in performing and interpreting molecular analyses relevant to the diagnosis and management of human genetic diseases and is a consultant regarding laboratory diagnosis of a broad range of inherited disorders. William Arnold Horton, MD NPI is 1740393552. 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:
3101 SW SAM JACKSON PARK ROAD PORTLAND, OR ZIP 97239-009 Phone: (503) 221-1537 Fax: (503) 221-3451
The enumeration date for this NPI number is 8/16/2006 and was last updated on 7/8/2007.
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
All materials and services on this site are provided on an "as is" and "as available" basis without warranty of any kind. The NPI record is maintained by the National Plan & Provider Enumeration System (NPPES) and anyone may request this information and other NPPES health care provider data from HHS under The Freedom of Information Act (FOIA), Title 5 of the United States Code, section 552. To update the NPI records please contact the NPPES.
