Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William Arnold Horton, MD

Individual provider Clinical Molecular Genetics Physician · NPI 1740393552

William Arnold Horton, MD is a Clinical Molecular Genetics Physician in Portland, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3101 SW Sam Jackson Park Rd
Portland, OR 97239-3009
Phone: (503) 221-1537
Fax: (503) 221-3451
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Molecular Genetics Physician (primary) Taxonomy 207SG0203X · Licence MD18607 (OR)

Record details

NPI number1740393552
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 16, 2006
Last updated in NPPESJuly 8, 2007

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