2026 NPPES data Clinical Nurse Specialist NPI 1023346004 APRN
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WENDY MADDUX, APRN

Clinical Nurse Specialist in LEWISTOWN, Montana. 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
83
Medicare Part D claims · Clinical Nurse Specialist avg: 953
What the federal data reveals: WENDY MADDUX, APRN is a Clinical Nurse Specialist ([object Object]) practicing in LEWISTOWN, Montana with a Medicare Part D prescribing footprint of 83 claims .

What stands out: WENDY MADDUX, APRN filed 83 Medicare Part D claims in 2023 across LEWISTOWN, Montana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

WENDY MADDUX, APRN at a glance

Quality data not reported

NPI registry status

Active

Issued 12/02/2009

NPI 1023346004

Primary specialty

Clinical Nurse Specialist

Niche

1,708 US NPIs in this specialty

Medicare Part D claims

83 91% vs specialty avg

2023 prescription claims

Specialty avg: 953

Specialty distribution in Montana

How Clinical Nurse Specialist compares to other specialties among Montana providers

Montana providers

Clinical Nurse Specialist share within Montana

1. Clinical Nurse Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Nurse Specialist share within Montana

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Nurse Specialist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Nurse Specialist ABMS/AOA estimate

Est. board-certified rate (Clinical Nurse Specialist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Nurse Specialist) — 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).

WENDY MADDUX, APRN is a Clinical Nurse Specialist provider practicing in LEWISTOWN, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APRN. NPI: 1023346004. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MADDUX 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 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%. 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.

Clinical Nurse Specialist is a narrow specialty nationwide, with 1,708 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

408 WENDELL AVE
LEWISTOWN, MT 59457

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.

1,708
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.

Compare Clinical Nurse Specialist nationally: see state-by-state distribution →

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 1,708 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

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