William Agan
NPI 1134308380 · Physician Assistant · Covington, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Agan is a Physician Assistant provider in Covington, WA (NPI 1134308380).
Provider details
- NPI number
- 1134308380
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- TA10005277 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
245 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $84 |
| Automated Urinalysis Test81003 | 19 | $2 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $105 |
| Removal of Impacted Ear Wax69210 | 11 | $45 |
Typical Medicare-allowed amounts for these services range $2–$118 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ipratropium Bromide | 71 | 62 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 50 | 50 |
| Azithromycin | 50 | 50 |
| Cephalexin | 29 | 29 |
| Mupirocin | 28 | 27 |
| Tizanidine Hcl | 24 | 24 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 17 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-10-24
- Last updated
- 2017-03-13
Frequently asked questions
- What is William Agan's NPI number?
- William Agan's National Provider Identifier (NPI) is 1134308380, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Agan's specialty?
- William Agan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Agan located?
- William Agan's practice location on file with NPPES is 16850 Se 272nd St, Covington, WA 98042-4931.
- What is William Agan's phone number?
- The practice phone number listed in the NPPES registry for William Agan is (253) 395-1960.
- Does William Agan accept Medicare?
- William Agan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Agan's NPI active?
- Yes — William Agan's NPI (1134308380) is active in the NPPES registry as of the last update on 2017-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.