1. Home
  2. Directory
  3. Washington
  4. Seatac
  5. Dietitian Registered
  6. NPI Profile

KATHERINE MATIAS R.D.
NPI 1104279157
Dietitian, Registered in Seatac, WA

Active since July 14, 2016
12901 20TH AVE S, SEATAC, WA 98168(206) 720-3987 Get Directions Write a Review

NPPES record last updated: March 13, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 13, 2026, Jul 14, 2016 (2 updates tracked since 2016).

About Katherine Matias R.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE MATIAS R.D. (NPI 1104279157) is an individual dietitian, registered in Seatac, Washington, licensed in (86060677) and active in the NPI registry since July 2016. She is a graduate of Other (2014).

NPPES Registry Identity

NPI1104279157
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameKATHERINE MATIASCredential: R.D.
Location Address12901 20TH AVE SSeatac, WA 98168-5159
Mailing Address12901 20th Ave SSeatac, WA 98168-5159 · (206) 720-3987
Phone(206) 720-3987
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateJuly 14, 2016
Last NPPES UpdateMarch 13, 20262 updates tracked since enumeration
NPPES CertifiedMarch 13, 2026
✔ NPI 1104279157 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed · 86060677
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
12901 20TH AVE S, Seatac, WA 98168
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Matias R.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9032686688
PECOS Enrollment IDI20260430003318

Medicare Billing Reassignment

Medicare enrollment records show Katherine Matias reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northwest Kidney Centers
Same address
End-Stage Renal Disease (ESRD) Treatment
12901 20TH AVE S
Seatac, WA 98168
  • Reassigned Medicare billing, Washington enrollment
  • 4 clinicians in this Medicare group
NPI 1700025038 (206) 923-3562

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GREGORY WISONT RDN
Dietitian, Registered
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 720-3987
JENNIFER ROTH RD
Dietitian, Registered
12901 20TH AVE S
SEATAC, WA 98168
King County (425) 248-7162
BETHANY L INGERSOLL MS, RD
Dietitian, Registered
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 292-2771
NORTHWEST KIDNEY CENTERS
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 292-2771
JOCELYN NAIDE RD
Dietitian, Registered
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 292-2771
NORTHWEST KIDNEY CENTERS
Pharmacy (Clinic Pharmacy)
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 343-4870
NORTHWEST KIDNEY CENTERS
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 923-3562
GENEVIEVE BIANCA PHILLIPS RD
Dietitian, Registered
12901 20TH AVE S
SEATAC, WA 98168
King County (206) 901-8758

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Matias's NPI number?

The NPI number for Katherine Matias is 1104279157. It was assigned to this individual provider in the NPPES registry on July 14, 2016.

Where is Katherine Matias located?

Katherine Matias practices at 12901 20th Ave S, Seatac, WA 98168. The listed phone number is (206) 720-3987.

What is Katherine Matias's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Katherine Matias enrolled in Medicare?

Yes. Katherine Matias is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Katherine Matias's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Matias reassigns Medicare benefits to Northwest Kidney Centers (Seatac, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Matias's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Katherine Matias was last updated on March 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.