Steven Mattson, MD
NPI 1770692410 · Anesthesiology Physician · Longview, WA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Mattson, MD is a Anesthesiology Physician provider in Longview, WA (NPI 1770692410).
Provider details
- NPI number
- 1770692410
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ML20007717 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 315 Martin Luther King Jr WayTacoma, WA 98405-4234Phone: (253) 403-1000
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2021-06-02
- Certified
- 2021-06-02
Frequently asked questions
- What is Steven Mattson's NPI number?
- Steven Mattson's National Provider Identifier (NPI) is 1770692410, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Mattson's specialty?
- Steven Mattson is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Mattson located?
- Steven Mattson's practice location on file with NPPES is 1615 Delaware St, Longview, WA 98632-2367.
- What is Steven Mattson's phone number?
- The practice phone number listed in the NPPES registry for Steven Mattson is (360) 414-2000.
- Does Steven Mattson accept Medicare?
- Steven Mattson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Mattson's NPI active?
- Yes — Steven Mattson's NPI (1770692410) is active in the NPPES registry as of the last update on 2021-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.