2026 NPPES data Physician Assistant NPI 1417567082 PA-C
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WILLEM POELMANS, PA-C

Physician Assistant in SPRINGFIELD, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
5K
Medicare Part D claims · 496 beneficiaries · Physician Assistant avg: 790
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WILLEM POELMANS, PA-C filed 4,755 Medicare Part D claims in 2023 as a Physician Assistant in SPRINGFIELD, Oregon, prescribing 88% generic.

5K
Part D claims, 2023
88%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

WILLEM POELMANS, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

4,755 Top 7% higher than 93% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about WILLEM POELMANS, PA-C?

Quality data not reported

NPI registry status

Active

Issued 08/07/2020

NPI 1417567082

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

4,755 502% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Oregon

How Physician Assistant compares to other specialties among Oregon providers

Oregon providers

Physician Assistant share within Oregon

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

WILLEM POELMANS, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 2280 MARCOLA RD, SPRINGFIELD, OR, 97477, with a listed phone of (541) 747-4300. NPI 1417567082 was issued on 08/07/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what POELMANS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 4,755 prescription claims written by this provider, covering 496 Medicare beneficiaries and totaling roughly $490K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 4.6%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2280 MARCOLA RD
SPRINGFIELD, OR 97477

Provider Details

NPI 1417567082
Specialty Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 08/07/2020

Brand vs generic prescribing mix · Typical

WILLEM POELMANS, PA-C — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 4,755 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

4,755
Total Claims
$490K
Total Drug Cost
496
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,442
Total Day Supply
301,888
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$370K
Generic Drug Cost
$119K
Opioid Claims
219 (4.6% rate)
Antibiotic Claims
140

Patient Demographics

Average Patient Age
71.2 years
Avg HCC Risk Score
1.24
Gender Split
54% female / 46% male
Age Distribution
<65: 80, 65-74: 233, 75-84: 146, 85+: 37

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What WILLEM POELMANS, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
271
Lisinopril
207
Amlodipine Besylate
145
Rosuvastatin Calcium
145
Levothyroxine Sodium
137
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
113
Gabapentin
112
Metoprolol Succinate
103
Omeprazole
94
Losartan Potassium
93

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physician Assistant Overview

How WILLEM POELMANS, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

WILLEM POELMANS, PA-C's 4,755 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as POELMANS.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLEM POELMANS, PA-C's specialty?
WILLEM POELMANS, PA-C specializes in Physician Assistant and practices in SPRINGFIELD, Oregon. Credentials: PA-C.
How much does WILLEM POELMANS, PA-C prescribe under Medicare Part D?
In 2023, WILLEM POELMANS, PA-C wrote 4,755 Medicare Part D claims totaling $490K in drug costs for 496 beneficiaries.
Where is WILLEM POELMANS, PA-C located?
WILLEM POELMANS, PA-C is located at 2280 MARCOLA RD, SPRINGFIELD, OR, 97477. Phone: (541) 747-4300.
What is WILLEM POELMANS, PA-C's NPI number?
WILLEM POELMANS, PA-C's National Provider Identifier (NPI) is 1417567082, issued on 08/07/2020.
Does WILLEM POELMANS, PA-C prescribe more brand-name or generic drugs?
WILLEM POELMANS, PA-C's prescribing is 12% brand-name and 88% generic drugs by claim count, with $370K in brand drug costs.
Does WILLEM POELMANS, PA-C prescribe opioids?
Yes, WILLEM POELMANS, PA-C had 219 opioid claims in 2023 with an opioid prescribing rate of 4.6%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does WILLEM POELMANS, PA-C prescribe most often?
Based on 2023 Medicare Part D data, WILLEM POELMANS, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLEM POELMANS, PA-C accept Medicare?
WILLEM POELMANS, PA-C appears in CMS Medicare data with 4,755 Part D claims and 496 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLEM POELMANS, PA-C's credentials?
WILLEM POELMANS, PA-C's NPI is 1417567082 with credentials PA-C. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology