NPPES file of Aug 9, 2026

Andrew Mathias, RDN

Registered Dietitian · Federal Way, WA

Andrew Mathias, RDN is a registered dietitian with a practice address in Federal Way, Washington, and NPI 1770309379, issued on Nov 27, 2024. Check the license (Washington 61370767, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770309379
Name
Andrew Mathias
Credential
RDN
Primary taxonomy
Registered Dietitian 133V00000X
License numbers
61370767 WA
DI61370767 WA
Self-reported in NPPES; status is on the state search
Practice location
31405 18TH Ave S, Federal Way, WA 98003
Phone
(253) 681-6600
Enumerated
Nov 27, 2024
Record last updated
Dec 27, 2024
Medicare enrollment
Enrolled (PECOS I20241230001192); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 2,134 in Washington → Look up another NPI →

Also registered at 31405 18TH Ave S

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Neeraja BadrinarayananMental Health Counselor1760033005
  2. Yelena Beygelman, DDSOrthodontics and Dentofacial Orthopedics Dentistry1245880806
  3. Rachel Bock, FNP-CFamily Nurse Practitioner1376052746
  4. Heather Buzbee, ARNPPsychiatric/Mental Health Nurse Practitioner1467965954
  5. Jai Jun Byeon, MDFamily Medicine Physician1386694982
  6. Jenna CaggianoMental Health Counselor1629450507

Verify Andrew Mathias in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license 61370767    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Sea Mar Community Health CentersFederal Way, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Andrew Mathias among 2,134 registered dietitian records in Washington

Andrew Mathias, RDN is one of 2,134 registered dietitian records with a practice address in Washington. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 89% of them.

  • NPI issued2024 · 89% of these records are older, 6% newer
  • In a Medicare fileYes · 9% of these records are
  • In the CMS Doctors and Clinicians fileYes · 11% of these records are
  • Graduated2021 · median 2014 among the 238 with a school on file
  • Record last updated2024 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Washington

There are 2,134 registered dietitian records in Washington.

All 2,134 in Washington → Every provider in Federal Way → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Linda Burton, RDFederal Way, WA 980031659441509
  2. Rebecca Clow, DIETICIANFederal Way, WA 980031679772974
  3. Deanna Eisele, RDFederal Way, WA 980031023558814
  4. Simone Hagerty, RD, CDFederal Way, WA 980031730252735
  5. Kathryn HallFederal Way, WA 980031336519354
  6. Cheryl HansenFederal Way, WA 980031689034126
  7. Gretchen Hoffman, RDFederal Way, WA 980031588910665
  8. Kjersti Johnson, RDNFederal Way, WA 980031205203445

Common questions

What is Andrew Mathias, RDN's NPI number?

Andrew Mathias, RDN's National Provider Identifier (NPI) is 1770309379, issued on Nov 27, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Andrew Mathias, RDN located?

The NPPES record lists a practice address at 31405 18TH Ave S, Federal Way, WA, 98003. Phone: (253) 681-6600. Providers update this record themselves, so call before visiting.

How can I verify Andrew Mathias, RDN's license?

NPPES lists Washington license number 61370767, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.