What is Katherine Matias's NPI number?

Katherine Matias's National Provider Identifier (NPI) is 1104279157, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Matias's specialty?

Katherine Matias is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).

Where is Katherine Matias located?

Katherine Matias's practice location on file with NPPES is 12901 20th Ave S, Seatac, WA 98168-5159.

What is Katherine Matias's phone number?

The practice phone number listed in the NPPES registry for Katherine Matias is (206) 720-3987.

Is Katherine Matias's NPI active?

Yes — Katherine Matias's NPI (1104279157) is active in the NPPES registry as of the last update on 2026-03-13.

IndividualActive

Katherine Matias, R.D.

NPI 1104279157 · Registered Dietitian · Seatac, WA

Katherine Matias, R.D. is a Registered Dietitian provider in Seatac, WA (NPI 1104279157).

Provider details

NPI number: 1104279157
Entity type: Individual
Primary specialty: Registered DietitianDietary & Nutritional Service Providers
Credential: R.D.
Sex: Female
Sole proprietor: Yes
License: 86060677

Specialties & taxonomies

Registered DietitianPrimary133V00000XLicense 86060677
Dietary & Nutritional Service Providers

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
10 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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

12901 20th Ave S

Seatac, WA 98168-5159

Phone: (206) 720-3987

Street-level locationGet directions

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Mailing address