2026 NPPES data Nurse Practitioner NPI 1538442512 APN
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NANCY WALKER, APN

Nurse Practitioner in LAS VEGAS, Nevada. 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
28
Medicare Part D claims · 16 beneficiaries · Nurse Practitioner avg: 1K

What the federal data shows

NANCY WALKER, APN filed 28 Medicare Part D claims in 2023 as a Nurse Practitioner in LAS VEGAS, Nevada.

28
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.

NANCY WALKER, APN's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

28 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 NANCY WALKER, APN?

Quality data not reported

NPI registry status

Active

Issued 09/26/2011

NPI 1538442512

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

28 97% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Nevada

How Nurse Practitioner compares to other specialties among Nevada providers

Nevada providers

Nurse Practitioner share within Nevada

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within Nevada

Specialty board-certification context

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

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

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

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

NANCY WALKER, APN appears in the CMS NPPES registry as a Nurse Practitioner provider holding APN credentials at 3186 S MARYLAND PKWY, LAS VEGAS, NV, 89109, with a listed phone of (702) 731-8000. NPI 1538442512 was issued on 09/26/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALKER 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 28 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $200 in drug spend. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

3186 S MARYLAND PKWY
LAS VEGAS, NV 89109

Provider Details

NPI 1538442512
Specialty Nurse Practitioner
Credentials APN
Gender Female
NPI Issued 09/26/2011

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

28
Total Claims
$200
Total Drug Cost
16
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
28
Total Day Supply
278
Generic Drug Cost
$138

Patient Demographics

Average Patient Age
67.1 years
Avg HCC Risk Score
2.06

Nurse Practitioner Overview

How NANCY WALKER, APN fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

NANCY WALKER, APN's 28 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Nevada

Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as WALKER.

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is NANCY WALKER, APN's specialty?
NANCY WALKER, APN specializes in Nurse Practitioner and practices in LAS VEGAS, Nevada. Credentials: APN.
How much does NANCY WALKER, APN prescribe under Medicare Part D?
In 2023, NANCY WALKER, APN wrote 28 Medicare Part D claims totaling $200 in drug costs for 16 beneficiaries.
Where is NANCY WALKER, APN located?
NANCY WALKER, APN is located at 3186 S MARYLAND PKWY, LAS VEGAS, NV, 89109. Phone: (702) 731-8000.
What is NANCY WALKER, APN's NPI number?
NANCY WALKER, APN's National Provider Identifier (NPI) is 1538442512, issued on 09/26/2011.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
Does NANCY WALKER, APN accept Medicare?
NANCY WALKER, APN appears in CMS Medicare data with 28 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NANCY WALKER, APN's credentials?
NANCY WALKER, APN's NPI is 1538442512 with credentials APN. 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