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

Steven L Mattson, MD

Individual provider Anesthesiology Physician · NPI 1770692410

Steven L Mattson, MD is an Anesthesiology Physician in Longview, Washington. Works from 2 locations. Licensed in Washington.

Licensed in
WA
In the registry since
2006
Specialties on file
2
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

1615 Delaware St
Longview, WA 98632-2367
Phone: (360) 414-2000
Fax: (360) 414-7638
Show map & directions

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

Additional practice locations (1)

  • 315 Martin Luther King Jr Way, Tacoma, WA 98405-4234 — (253) 403-1000

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD00047821 (WA)
Anesthesiology Physician Taxonomy 207L00000X · Licence ML20007717 (WA)

Record details

NPI number1770692410
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 29, 2006
Last updated in NPPESJune 2, 2021
Certification dateJune 2, 2021

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