William Simpson, PA
NPI 1144879628 · Physician Assistant · Portland, OR
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Simpson, PA is a Physician Assistant provider in Portland, OR (NPI 1144879628).
Provider details
- NPI number
- 1144879628
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
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 tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
897 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 284 | $107 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 176 | $14 |
| Automated Urinalysis Test81003 | 111 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 72 | $78 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 65 | $12 |
| Complex Measurement of Pressure of Urine Flow in Bladder With Voiding Pressure Studies |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 271 | 99 |
| Finasteride | 172 | 57 |
| Testosterone Cypionate | 159 | 63 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 51 | 41 |
| Vibegronbrand: Gemtesa | 49 | 11 |
| Testosterone | 43 | 11 |
| Trospium Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,313 across 60 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-09-08
- Last updated
- 2019-09-08
Frequently asked questions
- What is William Simpson's NPI number?
- William Simpson's National Provider Identifier (NPI) is 1144879628, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Simpson's specialty?
- William Simpson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Simpson located?
- William Simpson's practice location on file with NPPES is 2230 Nw Pettygrove St Ste 210, Portland, OR 97210-2659.
- What is William Simpson's phone number?
- The practice phone number listed in the NPPES registry for William Simpson is (503) 223-6223.
- Does William Simpson accept Medicare?
- William Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Simpson's NPI active?
- Yes — William Simpson's NPI (1144879628) is active in the NPPES registry as of the last update on 2019-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.