NPI registry status
Active
2026 NPPES data Registered Dietitian NPI 1487045696 MD, RD, CNSC
Verify on CMS → Matthew Ewy, MD, RD, CNSC
Registered Dietitian in Madison, 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 64,580 in Registered Dietitian, 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
329
Medicare Part D claims · 74 beneficiaries · Registered Dietitian avg: 696
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Matthew Ewy, MD, RD, CNSC filed 329 Medicare Part D claims in 2023 as a Registered Dietitian in Madison, Wisconsin.
- 329
- Part D claims, 2023
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.
Matthew Ewy, MD, RD, CNSC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
329 Top 43% higher than 57% 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 Matthew Ewy, MD, RD, CNSC?
Quality data not reportedPrimary specialty
Registered Dietitian
Medicare Part D claims
329 53% vs specialty avg
Specialty distribution in Wisconsin
How Registered Dietitian 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 Registered Dietitian. 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).
Matthew Ewy, MD, RD, CNSC appears in the CMS NPPES registry as a Registered Dietitian provider holding MD, RD, CNSC credentials at 600 HIGHLAND AVE, Madison, WI, 53792, with a listed phone of (608) 263-0572. NPI 1487045696 was issued on 02/10/2015.
Medicare Part D records for calendar year 2023 show 329 prescription claims written by this provider, covering 74 Medicare beneficiaries and totaling roughly $36K in drug spend.
Registered Dietitian is a high-volume specialty nationwide, with 64,580 enrolled providers across 55 states and an average of 696 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 | 1487045696 |
|---|---|
| Specialty | Registered Dietitian |
| Credentials | MD, RD, CNSC |
| Gender | Male |
| NPI Issued | 02/10/2015 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
329
Total Claims
$36K
Total Drug Cost
74
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 667
- Total Day Supply
- 18,686
- Generic Drug Cost
- $6K
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 1.96
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Matthew Ewy, MD, RD, CNSC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
29 claims
- Losartan Potassium
Losartan Potassium
19 claims
- Enoxaparin Sodium
Enoxaparin Sodium
13 claims
- Ipratropium Bromide 11
Ipratropium Bromide
11 claims
- Ventolin Hfa 11
Ventolin Hfa
11 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 29 |
| Losartan Potassium | 19 |
| Enoxaparin Sodium | 13 |
| Ipratropium Bromide | 11 |
| Ventolin Hfa Albuterol Sulfate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Dietitian Overview
How Matthew Ewy, MD, RD, CNSC fits within the Registered Dietitian landscape nationally.
64,580
Registered Dietitian Providers in US
55
States with Registered Dietitian
696
Avg Claims per Provider
Matthew Ewy, MD, RD, CNSC's 329 claims are below the specialty average of 696.
Nearby Registered Dietitian Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Ewy.
Jerilyn Abba
Ripon, WI
Dr. Jennifer Abernathy
RD
Eau Claire, WI
Dr. Lynn Abitz
RD, CD
Neenah, WI
Dr. Austin Abts
RD
Eau Claire, WI
Dr. Mabel Adams
PA-S
Milwaukee, WI
Compare Registered Dietitian 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 Registered Dietitian 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
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Matthew Ewy, MD, RD, CNSC's specialty? ▼
Matthew Ewy, MD, RD, CNSC specializes in Registered Dietitian and practices in Madison, Wisconsin. Credentials: MD, RD, CNSC.
How much does Matthew Ewy, MD, RD, CNSC prescribe under Medicare Part D? ▼
In 2023, Matthew Ewy, MD, RD, CNSC wrote 329 Medicare Part D claims totaling $36K in drug costs for 74 beneficiaries.
Where is Matthew Ewy, MD, RD, CNSC located? ▼
Matthew Ewy, MD, RD, CNSC is located at 600 HIGHLAND AVE, Madison, WI, 53792. Phone: (608) 263-0572.
What is Matthew Ewy, MD, RD, CNSC's NPI number? ▼
Matthew Ewy, MD, RD, CNSC's National Provider Identifier (NPI) is 1487045696, issued on 02/10/2015.
How many Registered Dietitian providers are there in the US? ▼
There are 64,580 Registered Dietitian providers across 55 states in the US. The average Registered Dietitian provider writes 696 Medicare Part D claims per year.
What drugs does Matthew Ewy, MD, RD, CNSC prescribe most often? ▼
Based on 2023 Medicare Part D data, Matthew Ewy, MD, RD, CNSC's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Enoxaparin Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Matthew Ewy, MD, RD, CNSC accept Medicare? ▼
Matthew Ewy, MD, RD, CNSC appears in CMS Medicare data with 329 Part D claims and 74 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matthew Ewy, MD, RD, CNSC's credentials? ▼
Matthew Ewy, MD, RD, CNSC's NPI is 1487045696 with credentials MD, RD, CNSC. 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.