Lydia Katherine Fiez, PA-C, MPAS
Surgical Physician Assistant · Seattle, WA
Lydia Katherine Fiez, PA-C, MPAS is a surgical physician assistant with a practice address in Seattle, Washington, and NPI 1124628359, issued on Oct 27, 2020. Check the license (Washington PA61102619, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lydia Katherine Fiez
- Credential
- PA-C, MPAS
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- PA61102619 WA
PA.PA.61102619 WA
Self-reported in NPPES; status is on the state search - Practice location
- 601 Broadway Ste 700, Seattle, WA 98122
- Phone
- (206) 386-2600
- Enumerated
- Oct 27, 2020
- Record last updated
- Jul 26, 2024
- Fax
- (206) 622-1644
- Medicare enrollment
- Enrolled (PECOS I20201221000414); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 609 in Washington → Look up another NPI →
Also registered at 601 Broadway Ste 700
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roberto Garcia, PAOrthopaedic Surgery Physician1265387955
- Clare Timberlake, PA-CPhysician Assistant1518736651
Verify Lydia Katherine Fiez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PA61102619Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% more Medicare Part D claims than the average surgical physician assistant in 2024
407 Medicare Part D claims for 130 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 154 claims were for opioids.
Most prescribed
- Celecoxib121 claims
- Oxycodone Hcl89 claims
- Cephalexin54 claims
- Ondansetron Odt50 claims
- Hydrocodone-Acetaminophen32 claims
- Hydromorphone Hcl23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $137.01
1 payment: education; the largest payer was Medical Device Business Services, Inc. The 7,578 providers of this specialty with any payment received $703.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Opa Ortho PLLCSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lydia Katherine Fiez among 609 surgical physician assistant records in Washington
Lydia Katherine Fiez, PA-C, MPAS is one of 609 surgical physician assistant records with a practice address in Washington. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 78% of them.
- NPI issued2020 · 78% of these records are older, 17% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2020 · median 2015 among the 479 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Washington
There are 609 surgical physician assistant records in Washington.
All 609 in Washington → Every provider in Seattle → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Jeffrey Crossman, PA/SASeattle, WA 981221568495620
- Michael Donais, PA, CSASeattle, WA 981221174635288
- Gil Friedlander, PA-CSeattle, WA 981221124050554
- Ronald Hayes, PACSeattle, WA 981221659305944
- Thomas Huemmer, PACSeattle, WA 981221194758250
- Roger Lafavor, PACSeattle, WA 981221477586535
- Robert Navarrete, PACSeattle, WA 981221447288758
- Cynthia Pikula, PASeattle, WA 981221801832845
Common questions
What is Lydia Katherine Fiez, PA-C, MPAS's NPI number?
Lydia Katherine Fiez, PA-C, MPAS's National Provider Identifier (NPI) is 1124628359, issued on Oct 27, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Lydia Katherine Fiez, PA-C, MPAS located?
The NPPES record lists a practice address at 601 Broadway Ste 700, Seattle, WA, 98122. Phone: (206) 386-2600. Providers update this record themselves, so call before visiting.
How can I verify Lydia Katherine Fiez, PA-C, MPAS's license?
NPPES lists Washington license number PA61102619, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Lydia Katherine Fiez, PA-C, MPAS prescribe under Medicare Part D?
In 2024, Lydia Katherine Fiez, PA-C, MPAS had 407 Medicare Part D claims for 130 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions 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.
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.