2026 NPPES data Family Nurse Practitioner NPI 1578056990 APRN/CNP
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SHELBY LARSON, APRN/CNP

Family Nurse Practitioner in ASHLAND, Wisconsin. 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
2K
Medicare Part D claims · 208 beneficiaries · Family Nurse Practitioner avg: 1K

What the federal data shows

SHELBY LARSON, APRN/CNP filed 1,664 Medicare Part D claims in 2023 as a Family Nurse Practitioner in ASHLAND, Wisconsin.

2K
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.

SHELBY LARSON, APRN/CNP's Medicare Part D volume vs every U.S. prescriber

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

1,664 Top 18% higher than 82% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 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 SHELBY LARSON, APRN/CNP?

Quality data not reported

NPI registry status

Active

Issued 06/11/2018

NPI 1578056990

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

1,664 36% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Wisconsin

How Family Nurse Practitioner compares to other specialties among Wisconsin providers

Wisconsin providers

Family Nurse Practitioner share within Wisconsin

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

Specialty board-certification context

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

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

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

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

SHELBY LARSON, APRN/CNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding APRN/CNP credentials at 1615 MAPLE LN STE 1, ASHLAND, WI, 54806, with a listed phone of (715) 685-7500. NPI 1578056990 was issued on 06/11/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LARSON 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 1,664 prescription claims written by this provider, covering 208 Medicare beneficiaries and totaling roughly $166K in drug spend, with an opioid prescribing rate of 2.6%. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

1615 MAPLE LN STE 1
ASHLAND, WI 54806

Provider Details

NPI 1578056990
Specialty Family Nurse Practitioner
Credentials APRN/CNP
Gender Female
NPI Issued 06/11/2018

Hospital and facility affiliations

Facilities where SHELBY LARSON, APRN/CNP 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.

MEMORIAL MEDICAL CENTER INC
ASHLAND, WI

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.

1,664
Total Claims
$166K
Total Drug Cost
208
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,748
Total Day Supply
108,569
Generic Drug Cost
$38K
Opioid Claims
44 (2.6% rate)
Antibiotic Claims
37

Patient Demographics

Average Patient Age
70.4 years
Avg HCC Risk Score
1.18
Gender Split
69% female / 31% male
Age Distribution
<65: 29, 65-74: 113, 75-84: 51, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What SHELBY LARSON, APRN/CNP 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
Lisinopril
119
Atorvastatin Calcium
79
Losartan Potassium
73
Gabapentin
60
Levothyroxine Sodium
57
Omeprazole
57
Amlodipine Besylate
56
Metoprolol Tartrate
39
Metoprolol Succinate
38
Hydrochlorothiazide
35

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

Family Nurse Practitioner Overview

How SHELBY LARSON, APRN/CNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

SHELBY LARSON, APRN/CNP's 1,664 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Wisconsin

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

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

Frequently Asked Questions

What is SHELBY LARSON, APRN/CNP's specialty?
SHELBY LARSON, APRN/CNP specializes in Family Nurse Practitioner and practices in ASHLAND, Wisconsin. Credentials: APRN/CNP.
How much does SHELBY LARSON, APRN/CNP prescribe under Medicare Part D?
In 2023, SHELBY LARSON, APRN/CNP wrote 1,664 Medicare Part D claims totaling $166K in drug costs for 208 beneficiaries.
Where is SHELBY LARSON, APRN/CNP located?
SHELBY LARSON, APRN/CNP is located at 1615 MAPLE LN STE 1, ASHLAND, WI, 54806. Phone: (715) 685-7500.
What is SHELBY LARSON, APRN/CNP's NPI number?
SHELBY LARSON, APRN/CNP's National Provider Identifier (NPI) is 1578056990, issued on 06/11/2018.
Does SHELBY LARSON, APRN/CNP prescribe opioids?
Yes, SHELBY LARSON, APRN/CNP had 44 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does SHELBY LARSON, APRN/CNP prescribe most often?
Based on 2023 Medicare Part D data, SHELBY LARSON, APRN/CNP's most frequently prescribed drugs include Lisinopril, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHELBY LARSON, APRN/CNP accept Medicare?
SHELBY LARSON, APRN/CNP appears in CMS Medicare data with 1,664 Part D claims and 208 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHELBY LARSON, APRN/CNP's credentials?
SHELBY LARSON, APRN/CNP's NPI is 1578056990 with credentials APRN/CNP. 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