NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1659346559 PA
Verify on CMS → Maria Denu, PA
Physician Assistant in Spring Green, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 in Physician Assistant, 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
254
Medicare Part D claims · 120 beneficiaries · Physician Assistant avg: 790
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Maria Denu, PA filed 254 Medicare Part D claims in 2023 as a Physician Assistant in Spring Green, Wisconsin, prescribing 93% generic.
- 254
- Part D claims, 2023
- 93%
- 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.
Maria Denu, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
254 49th percentile higher than 49% of 1,370,886 prescribers
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 Maria Denu, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
254 68% vs specialty avg
Specialty distribution in Wisconsin
How Physician Assistant compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Physician Assistant. Verify directly:
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).
Maria Denu, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 436 SUNRISE DR, Spring Green, WI, 53588, with a listed phone of (608) 588-2502. NPI 1659346559 was issued on 02/22/2006.
Medicare Part D records for calendar year 2023 show 254 prescription claims written by this provider, covering 120 Medicare beneficiaries and totaling roughly $12K in drug spend, split 7% brand-name and 93% generic by claim count.
Physician Assistant is a high-volume specialty nationwide, with 150,974 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
Provider Details
| NPI | 1659346559 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 02/22/2006 |
Hospital and facility affiliations
Facilities where Maria Denu, PA 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.
Sauk Prairie Healthcare Inc
Prairie Du Sac, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Maria Denu, PA - brand share 7.0%
Physician Assistant average
7% brand-name claims vs 93% generic, on 254 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.
254
Total Claims
$12K
Total Drug Cost
120
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 318
- Total Day Supply
- 6,376
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $5K
- Antibiotic Claims
- 57
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 0.94
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Maria Denu, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
30 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
15 claims
- Gabapentin
Gabapentin
15 claims
- Cephalexin 11
Cephalexin
11 claims
| Drug | Claims |
|---|---|
| Prednisone | 30 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 15 |
| Gabapentin | 15 |
| Cephalexin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Maria Denu, PA fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Maria Denu, PA's 254 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Denu.
Dr. Amber Abraham
PA-C
Green Bay, WI
Roopa Achuri
Neenah, WI
Dr. Carleen Acker
PA-C
Madison, WI
Dr. Lauren Ackerman
PA-C
Cudahy, WI
Dr. Jocelyn Acompanado
PA-C
Sheboygan, WI
Compare Physician Assistant 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 Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Physician Assistant 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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 Wisconsin
Frequently Asked Questions
What is Maria Denu, PA's specialty? ▼
Maria Denu, PA specializes in Physician Assistant and practices in Spring Green, Wisconsin. Credentials: PA.
How much does Maria Denu, PA prescribe under Medicare Part D? ▼
In 2023, Maria Denu, PA wrote 254 Medicare Part D claims totaling $12K in drug costs for 120 beneficiaries.
Where is Maria Denu, PA located? ▼
Maria Denu, PA is located at 436 SUNRISE DR, Spring Green, WI, 53588. Phone: (608) 588-2502.
What is Maria Denu, PA's NPI number? ▼
Maria Denu, PA's National Provider Identifier (NPI) is 1659346559, issued on 02/22/2006.
Does Maria Denu, PA prescribe more brand-name or generic drugs? ▼
Maria Denu, PA's prescribing is 7% brand-name and 93% generic drugs by claim count, with $7K in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 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 Maria Denu, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Maria Denu, PA's most frequently prescribed drugs include Prednisone, Amoxicillin-Clavulanate Potass, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maria Denu, PA accept Medicare? ▼
Maria Denu, PA appears in CMS Medicare data with 254 Part D claims and 120 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maria Denu, PA's credentials? ▼
Maria Denu, PA's NPI is 1659346559 with credentials PA. 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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.