2026 NPPES data Primary Care Nurse Practitioner NPI 1316462542
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Clare Armbruster

Primary Care Nurse Practitioner in Madison, Wisconsin. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,138 in Primary Care Nurse Practitioner, 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
125
Medicare Part D claims · 75 beneficiaries · Primary Care Nurse Practitioner avg: 1K
MIPS score
77.4/100
▼ 6 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Clare Armbruster reported a CMS MIPS final score of 77.4/100 - below the 83.1 national average - and filed 125 Medicare Part D claims in 2023.

77.4/100
MIPS score · -6 vs avg
125
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.

Clare Armbruster's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

77 24th percentile higher than 24% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Where Clare Armbruster sits

This provider among primary care nurse practitioner peers

Across the 958 primary care nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Clare Armbruster writes more Part D claims than 19% of them and scores higher on MIPS quality than 23% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 62Clare Armbruster-Part D claim volume, percentile in specialty: 19 · MIPS quality, percentile: 23
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one primary care nurse practitioner peer from a representative sample of 60; the gold marker is Clare Armbruster. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Clare Armbruster?

Below national average

NPI registry status

Active

Issued 08/09/2017

NPI 1316462542

Primary specialty

Primary Care Nurse Practitioner

Mid-sized

10,138 US NPIs in this specialty

Medicare Part D claims

125 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,363

MIPS final score

77.4/100 5.7 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Wisconsin

How Primary Care Nurse Practitioner compares to other specialties among Wisconsin providers

Wisconsin providers

Largest specialties in Wisconsin (% of in-state providers)

Physical Therapist - 5.6%Physical Therapist5.6%Pharmacist - 4.8%Pharmacist4.8%Registered Nurse - 4.5%Registered Nurse4.5%Professional Counselor - 3.3%Professional Counselor3.3%Student in an Organized Health Care Education/Training Program - 3.3%Student in an Organized Health Care Education/Training Program3.3%Family Medicine Physician - 3.2%Family Medicine Physician3.2%Primary Care Nurse Practitioner - 0.1%Primary Care Nurse Practitioner0.1%
Largest specialties in Wisconsin (% of in-state providers)

Medicare quality performance, MIPS

Clare Armbruster's 2023 MIPS final score plotted against the Primary Care Nurse Practitioner national average

Below national average
MIPS Final Score
77.4/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Primary Care Nurse Practitioner) - 77.4/100 vs national avg 83.1

0%100%National avg83%77.4%
MIPS final score (Primary Care Nurse Practitioner) - 77.4/100 vs national avg 83.1

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).

Clare Armbruster appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider at 600 HIGHLAND AVE, Madison, WI, 53792, with a listed phone of (608) 263-0333. NPI 1316462542 was issued on 08/09/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Armbruster 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 125 prescription claims written by this provider, covering 75 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 77.6%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77.4/100 for the 2023 performance year (Quality 81.8, Cost 62.1), compared with the national average of 83.1.

Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,138 enrolled providers across 54 states and an average of 1,363 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

600 HIGHLAND AVE
Madison, WI 53792

Provider Details

NPI 1316462542
Specialty Primary Care Nurse Practitioner
Gender Female
NPI Issued 08/09/2017

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

77.4384
Final Score
Avg: 83.1
81.8371
Quality
62.1241
Cost
77
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Clare Armbruster 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.

University OF Wisconsin Medical Foundation Inc
Madison, 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.

125
Total Claims
$2K
Total Drug Cost
75
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
127
Total Day Supply
1,238
Generic Drug Cost
$826
Opioid Claims
97 (77.6% rate)

Patient Demographics

Average Patient Age
66.7 years
Avg HCC Risk Score
1.68
Gender Split
63% female / 37% male
Age Distribution
<65: 23, 65-74: 31, 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.

Drug Claims
Oxycodone Hcl
81

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

Primary Care Nurse Practitioner Overview

How Clare Armbruster fits within the Primary Care Nurse Practitioner landscape nationally.

10,138
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider

Clare Armbruster's 125 claims are below the specialty average of 1,363.

Nearby Primary Care Nurse Practitioner Providers in Wisconsin

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

Compare Primary Care Nurse Practitioner 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 Wisconsin medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Primary Care Nurse Practitioner 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.

Frequently Asked Questions

What is Clare Armbruster's specialty?
Clare Armbruster specializes in Primary Care Nurse Practitioner and practices in Madison, Wisconsin.
How much does Clare Armbruster prescribe under Medicare Part D?
In 2023, Clare Armbruster wrote 125 Medicare Part D claims totaling $2K in drug costs for 75 beneficiaries.
What is Clare Armbruster's Medicare quality score?
Clare Armbruster has a CMS MIPS Final Score of 77.4/100 (Quality: 81.8, Cost: 62.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Clare Armbruster located?
Clare Armbruster is located at 600 HIGHLAND AVE, Madison, WI, 53792. Phone: (608) 263-0333.
What is Clare Armbruster's NPI number?
Clare Armbruster's National Provider Identifier (NPI) is 1316462542, issued on 08/09/2017.
Does Clare Armbruster prescribe opioids?
Yes, Clare Armbruster had 97 opioid claims in 2023 with an opioid prescribing rate of 77.6%.
How many Primary Care Nurse Practitioner providers are there in the US?
There are 10,138 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Clare Armbruster prescribe most often?
Based on 2023 Medicare Part D data, Clare Armbruster's most frequently prescribed drugs include Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Clare Armbruster accept Medicare?
Clare Armbruster appears in CMS Medicare data with 125 Part D claims and 75 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Clare Armbruster's credentials?
Clare Armbruster's NPI is 1316462542. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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.