William A. Agan
Physician Assistant · Covington, WA
William A. Agan is a physician assistant with a practice address in Covington, Washington, and NPI 1134308380, issued on Oct 24, 2007. Check the license (Washington TA10005277, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William A. Agan
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- TA10005277 WA
Self-reported in NPPES; status is on the state search - Practice location
- 16850 SE 272ND St, Covington, WA 98042
- Phone
- (253) 395-1960
- Enumerated
- Oct 24, 2007
- Record last updated
- Mar 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (253) 395-2013
- Medicare enrollment
- Enrolled (PECOS I20080905000308); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,718 in Washington → Look up another NPI →
Also registered at 16850 SE 272ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gail Messler, M. D.Family Medicine Physician1932393022
Verify William A. Agan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license TA10005277Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average physician assistant in 2024
452 Medicare Part D claims for 247 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Ipratropium Bromide71 claims
- Amoxicillin-Clavulanate Potass50 claims
- Azithromycin50 claims
- Cephalexin29 claims
- Mupirocin28 claims
- Tizanidine Hcl24 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.
Bills Medicare through one group practice
- Swedish Health ServicesRedmond, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Agan among 3,718 physician assistant records in Washington
William A. Agan is one of 3,718 physician assistant records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 73% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2007 · median 2017 among the 2,460 with a school on file
- Record last updated2017 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 physician assistant records list a practice address in Covington
They are 12 of the 431 NPPES records with a practice address in Covington, and 3,718 physician assistant records in Washington.
All 3,718 in Washington → Every provider in Covington → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Samuel Gillespie, PAKent, WA 980421215810064
- Ismail Jatta, PA-SCovington, WA 980421902275233
- Jasmine Johnson, PA-CCovington, WA 980421508053299
- Kevin Kunde, PA-CCovington, WA 980421699183293
- Julie LangCovington, WA 980421306247952
- Lisa Motland, PA-CCovington, WA 980421194248856
- Lauren Riley, PA-CCovington, WA 980421457889461
- Hope Rutherford, PACCovington, WA 980421912244203
Common questions
What is William A. Agan's NPI number?
William A. Agan's National Provider Identifier (NPI) is 1134308380, issued on Oct 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William A. Agan located?
The NPPES record lists a practice address at 16850 SE 272ND St, Covington, WA, 98042. Phone: (253) 395-1960. Providers update this record themselves, so call before visiting.
How can I verify William A. Agan's license?
NPPES lists Washington license number TA10005277, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does William A. Agan prescribe under Medicare Part D?
In 2024, William A. Agan had 452 Medicare Part D claims for 247 beneficiaries; the average among physician assistant prescribers was 830. 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.