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

William Matthew Klein, MD

Individual provider Pediatric Anesthesiology Physician · NPI 1033290838

William Matthew Klein, MD is a Pediatric Anesthesiology 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.

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Practice location Address checks out

3101 SW Sam Jackson Park Rd
Portland, OR 97239-3009
Phone: (503) 221-3424
Fax: (503) 221-3490
Show map & directions

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

Specialties & licences

Pediatric Anesthesiology Physician (primary) Taxonomy 207LP3000X · Licence MD20380 (OR)

Record details

NPI number1033290838
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESNovember 16, 2012
Mailing addressPo Box 8500, Lockbox 7642, Shriners Hospital For Children Portland, Philadelphia, PA 19178-7642

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