NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1780952358 ARNP
Verify on CMS → Mary Nouwens, ARNP
Registered Nurse in Ellensburg, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 177,204 in Registered Nurse, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
104
Medicare Part D claims · 26 beneficiaries · Registered Nurse avg: 1K
MIPS score
77.5/100
▼ 6 pts below national avg 83.5 · Above neutral
Industry payments
$111.73
4 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Mary Nouwens, ARNP reported a CMS MIPS final score of 77.5/100 - below the 83.5 national average - and filed 104 Medicare Part D claims in 2023.
- 77.5/100
- MIPS score · -6 vs avg
- 104
- Part D claims, 2023
- $111.73
- industry payments (Sunshine Act)
- ≥20th
- pct among measured MIPS (lower-bound band)
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.
Mary Nouwens, ARNP's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
78 ≥ 20th percentile 20% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mary Nouwens, ARNP sits
This provider among registered nurse peers
Across the 3,271 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Nouwens, ARNP writes more Part D claims than 25% of them and scores higher on MIPS quality than 20% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one registered nurse peer from a representative sample of 60; the gold marker is Mary Nouwens, ARNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mary Nouwens, ARNP?
Below national averagePrimary specialty
Registered Nurse
Medicare Part D claims
104 90% vs specialty avg
MIPS final score
77.5/100 6 pts vs avg
Specialty distribution in Washington
How Registered Nurse compares to other specialties among Washington providers
Medicare quality performance, MIPS
Mary Nouwens, ARNP's 2023 MIPS final score plotted against the Registered Nurse national average
- MIPS Final Score
- 77.5/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Registered Nurse) - 77.5/100 vs national avg 83.5
How MIPS and board certification work
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).
Mary Nouwens, ARNP appears in the CMS NPPES registry as a Registered Nurse provider holding ARNP credentials at 521 E MOUNTAIN VIEW AVE, Ellensburg, WA, 98926, with a listed phone of (509) 962-1414. NPI 1780952358 was issued on 12/09/2011.
Medicare Part D records for calendar year 2023 show 104 prescription claims written by this provider, covering 26 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 17.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77.5/100 for the 2023 performance year (Quality 74.2, Cost 50.7), compared with the 83.5 average among clinicians with a measured score.
Registered Nurse is a high-volume specialty nationwide, with 177,204 enrolled providers across 56 states and an average of 1,000 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
Provider Details
| NPI | 1780952358 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | ARNP |
| Gender | Female |
| NPI Issued | 12/09/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
77.4605
Final Score
Measured-score avg: 83.5
74.1695
Quality
50.6989
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mary Nouwens, ARNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Kittitas County Public Hospital Dist 1
Ellensburg, WA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mary Nouwens, ARNP. Source: openpaymentsdata.cms.gov.
Total received
$112
Largest payer
Organogenesis Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Washington WMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 - they are NOT specific to Mary Nouwens, ARNP. To verify Mary Nouwens, ARNP's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases
WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
104
Total Claims
$2K
Total Drug Cost
26
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 104
- Total Day Supply
- 2,013
- Generic Drug Cost
- $2K
- Opioid Claims
- 18 (17.3% rate)
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 2.04
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Metformin Hcl | 14 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Mary Nouwens, ARNP fits within the Registered Nurse landscape nationally.
177,204
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Mary Nouwens, ARNP's 104 claims are below the specialty average of 1,000.
Nearby Registered Nurse Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Nouwens.
Dr. Donald Aakervik
RN
Vancouver, WA
Dr. Tamryn Aalvik
RN
Kent, WA
Isaac Aanenson
Spokane, WA
Dr. Anna Aarhus
RN
Renton, WA
Dr. Victoria Aase
RN
Kelso, WA
Compare Registered Nurse nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Washington medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Registered Nurse peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Washington
Frequently Asked Questions
What is Mary Nouwens, ARNP's specialty? ▼
Mary Nouwens, ARNP specializes in Registered Nurse and practices in Ellensburg, Washington. Credentials: ARNP.
How much does Mary Nouwens, ARNP prescribe under Medicare Part D? ▼
In 2023, Mary Nouwens, ARNP wrote 104 Medicare Part D claims totaling $2K in drug costs for 26 beneficiaries.
What is Mary Nouwens, ARNP's Medicare quality score? ▼
Mary Nouwens, ARNP has a CMS MIPS Final Score of 77.5/100 (Quality: 74.2, Cost: 50.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Nouwens, ARNP located? ▼
Mary Nouwens, ARNP is located at 521 E MOUNTAIN VIEW AVE, Ellensburg, WA, 98926. Phone: (509) 962-1414.
What is Mary Nouwens, ARNP's NPI number? ▼
Mary Nouwens, ARNP's National Provider Identifier (NPI) is 1780952358, issued on 12/09/2011.
Does Mary Nouwens, ARNP prescribe opioids? ▼
Yes, Mary Nouwens, ARNP had 18 opioid claims in 2023 with an opioid prescribing rate of 17.3%.
How many Registered Nurse providers are there in the US? ▼
There are 177,204 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Mary Nouwens, ARNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Nouwens, ARNP's most frequently prescribed drugs include Metformin Hcl, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Nouwens, ARNP accept Medicare? ▼
Mary Nouwens, ARNP appears in CMS Medicare data with 104 Part D claims and 26 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Nouwens, ARNP's credentials? ▼
Mary Nouwens, ARNP's NPI is 1780952358 with credentials ARNP. 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
View source datasets and methodology notes
- 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.