2026 NPPES data Adult Health Nurse Practitioner NPI 1538479225 NP-C
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LESLEY MAGNUSSEN, NP-C

Adult Health Nurse Practitioner in DENVER, Colorado. 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
352
Medicare Part D claims · 49 beneficiaries · Adult Health Nurse Practitioner avg: 1K

What the federal data shows

LESLEY MAGNUSSEN, NP-C filed 352 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in DENVER, Colorado.

352
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.

LESLEY MAGNUSSEN, NP-C's Medicare Part D volume vs every U.S. prescriber

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

352 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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 LESLEY MAGNUSSEN, NP-C?

Quality data not reported

NPI registry status

Active

Issued 10/14/2010

NPI 1538479225

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

352 71% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in Colorado

How Adult Health Nurse Practitioner compares to other specialties among Colorado providers

Colorado providers

Adult Health Nurse Practitioner share within Colorado

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Adult Health 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).

LESLEY MAGNUSSEN, NP-C appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding NP-C credentials at 4545 E 9TH AVE STE 400, DENVER, CO, 80220, with a listed phone of (303) 320-2929. NPI 1538479225 was issued on 10/14/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAGNUSSEN 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 352 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $83K 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.

Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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

4545 E 9TH AVE STE 400
DENVER, CO 80220

Provider Details

NPI 1538479225
Specialty Adult Health Nurse Practitioner
Credentials NP-C
Gender Female
NPI Issued 10/14/2010

Hospital and facility affiliations

Facilities where LESLEY MAGNUSSEN, NP-C 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.

HEALTHONE CLINIC SERVICES - PRIMARY CARE LLC
DENVER, CO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

352
Total Claims
$83K
Total Drug Cost
49
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
791
Total Day Supply
23,015
Generic Drug Cost
$13K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
66.4 years
Avg HCC Risk Score
1.08
Gender Split
49% female / 51% male
Age Distribution
<65: 12, 65-74: 29, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What LESLEY MAGNUSSEN, NP-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
25
Gabapentin
20
Lisinopril
18
Losartan Potassium
13
Amlodipine Besylate
12
Lisinopril-Hydrochlorothiazide
Lisinopril/Hydrochlorothiazide
12
Omeprazole
12
Lantus Solostar
"Insulin Glargine
N/A

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Adult Health Nurse Practitioner Overview

How LESLEY MAGNUSSEN, NP-C fits within the Adult Health Nurse Practitioner landscape nationally.

29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider

LESLEY MAGNUSSEN, NP-C's 352 claims are below the specialty average of 1,201.

Nearby Adult Health Nurse Practitioner Providers in Colorado

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

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

Frequently Asked Questions

What is LESLEY MAGNUSSEN, NP-C's specialty?
LESLEY MAGNUSSEN, NP-C specializes in Adult Health Nurse Practitioner and practices in DENVER, Colorado. Credentials: NP-C.
How much does LESLEY MAGNUSSEN, NP-C prescribe under Medicare Part D?
In 2023, LESLEY MAGNUSSEN, NP-C wrote 352 Medicare Part D claims totaling $83K in drug costs for 49 beneficiaries.
Where is LESLEY MAGNUSSEN, NP-C located?
LESLEY MAGNUSSEN, NP-C is located at 4545 E 9TH AVE STE 400, DENVER, CO, 80220. Phone: (303) 320-2929.
What is LESLEY MAGNUSSEN, NP-C's NPI number?
LESLEY MAGNUSSEN, NP-C's National Provider Identifier (NPI) is 1538479225, issued on 10/14/2010.
How many Adult Health Nurse Practitioner providers are there in the US?
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does LESLEY MAGNUSSEN, NP-C prescribe most often?
Based on 2023 Medicare Part D data, LESLEY MAGNUSSEN, NP-C's most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LESLEY MAGNUSSEN, NP-C accept Medicare?
LESLEY MAGNUSSEN, NP-C appears in CMS Medicare data with 352 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LESLEY MAGNUSSEN, NP-C's credentials?
LESLEY MAGNUSSEN, NP-C's NPI is 1538479225 with credentials NP-C. 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