NPI registry status
Active
2026 NPPES data Clinical Nurse Specialist NPI 1023346004 APRN
Verify on CMS → Wendy Maddux, APRN
Clinical Nurse Specialist in Lewistown, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,715 in Clinical Nurse Specialist, 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
83
Medicare Part D claims · Clinical Nurse Specialist avg: 953
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Wendy Maddux, APRN filed 83 Medicare Part D claims in 2023 as a Clinical Nurse Specialist in Lewistown, Montana.
- 83
- 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.
Wendy Maddux, APRN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
83 0th percentile higher than 0% 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 Wendy Maddux, APRN?
Quality data not reportedPrimary specialty
Clinical Nurse Specialist
Medicare Part D claims
83 91% vs specialty avg
Specialty distribution in Montana
How Clinical Nurse Specialist compares to other specialties among Montana 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 Clinical Nurse Specialist. 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).
Wendy Maddux, APRN appears in the CMS NPPES registry as a Clinical Nurse Specialist provider holding APRN credentials at 408 WENDELL AVE, Lewistown, MT, 59457, with a listed phone of (406) 535-6302. NPI 1023346004 was issued on 12/02/2009.
Medicare Part D records for calendar year 2023 show 83 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $8K in drug spend, with an opioid prescribing rate of 31.3%.
Clinical Nurse Specialist is a narrow specialty nationwide, with 1,715 enrolled providers across 49 states and an average of 953 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 | 1023346004 |
|---|---|
| Specialty | Clinical Nurse Specialist |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 12/02/2009 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
83
Total Claims
$8K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 126
- Total Day Supply
- 3,621
- Generic Drug Cost
- $2K
- Opioid Claims
- 26 (31.3% rate)
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 1.38
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Clinical Nurse Specialist Overview
How Wendy Maddux, APRN fits within the Clinical Nurse Specialist landscape nationally.
1,715
Clinical Nurse Specialist Providers in US
49
States with Clinical Nurse Specialist
953
Avg Claims per Provider
Wendy Maddux, APRN's 83 claims are below the specialty average of 953.
Nearby Clinical Nurse Specialist Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Maddux.
Dr. Deanna Brame
APRN
Bozeman, MT
Dr. Ingrid Hazlett
APRN, AGCNS-BC
Missoula, MT
Dr. Amanda Lucas
CNS
Great Falls, MT
Compare Clinical Nurse Specialist 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 Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Clinical Nurse Specialist 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 Montana
Frequently Asked Questions
What is Wendy Maddux, APRN's specialty? ▼
Wendy Maddux, APRN specializes in Clinical Nurse Specialist and practices in Lewistown, Montana. Credentials: APRN.
How much does Wendy Maddux, APRN prescribe under Medicare Part D? ▼
In 2023, Wendy Maddux, APRN wrote 83 Medicare Part D claims totaling $8K in drug costs for N/A beneficiaries.
Where is Wendy Maddux, APRN located? ▼
Wendy Maddux, APRN is located at 408 WENDELL AVE, Lewistown, MT, 59457. Phone: (406) 535-6302.
What is Wendy Maddux, APRN's NPI number? ▼
Wendy Maddux, APRN's National Provider Identifier (NPI) is 1023346004, issued on 12/02/2009.
Does Wendy Maddux, APRN prescribe opioids? ▼
Yes, Wendy Maddux, APRN had 26 opioid claims in 2023 with an opioid prescribing rate of 31.3%.
How many Clinical Nurse Specialist providers are there in the US? ▼
There are 1,715 Clinical Nurse Specialist providers across 49 states in the US. The average Clinical Nurse Specialist provider writes 953 Medicare Part D claims per year.
What drugs does Wendy Maddux, APRN prescribe most often? ▼
Based on 2023 Medicare Part D data, Wendy Maddux, APRN's most frequently prescribed drugs include Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Wendy Maddux, APRN accept Medicare? ▼
Wendy Maddux, APRN appears in CMS Medicare data with 83 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Wendy Maddux, APRN's credentials? ▼
Wendy Maddux, APRN's NPI is 1023346004 with credentials APRN. 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.