2026 NPPES data Registered Nurse NPI 1639890759 APNP, FNP
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Kara Mayerbock, APNP, FNP

Registered Nurse in Germantown, 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
431
Medicare Part D claims · 167 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Kara Mayerbock, APNP, FNP filed 431 Medicare Part D claims in 2023 as a Registered Nurse in Germantown, Wisconsin, prescribing 88% generic.

431
Part D claims, 2023
88%
generic prescribing

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.

Kara Mayerbock, APNP, FNP's Medicare Part D volume vs every U.S. prescriber

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

431 Top 38% higher than 62% 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%). This entry sits in this band. 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 Kara Mayerbock, APNP, FNP?

Quality data not reported

NPI registry status

Active

Issued 09/07/2022

NPI 1639890759

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

431 57% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in Wisconsin

How Registered Nurse compares to other specialties among Wisconsin providers

Wisconsin providers

Registered Nurse share within Wisconsin

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Wisconsin

Specialty board-certification context

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

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

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

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

Kara Mayerbock, APNP, FNP appears in the CMS NPPES registry as a Registered Nurse provider holding APNP, FNP credentials at W168N11237 WESTERN AVE, Germantown, WI, 53022, with a listed phone of (262) 253-5060. NPI 1639890759 was issued on 09/07/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Mayerbock 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 431 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $32K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 8.1%. 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

W168N11237 WESTERN AVE
Germantown, WI 53022

Provider Details

NPI 1639890759
Specialty Registered Nurse
Credentials APNP, FNP
Gender Female
NPI Issued 09/07/2022

Hospital and facility affiliations

Facilities where Kara Mayerbock, APNP, FNP 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.

Froedtert Andthe Medical College OF Wisconsin Community Physicians Inc
Germantown, 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).

Brand vs generic prescribing mix · Typical

Kara Mayerbock, APNP, FNP — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 431 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

431
Total Claims
$32K
Total Drug Cost
167
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
758
Total Day Supply
19,641
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$24K
Generic Drug Cost
$8K
Opioid Claims
35 (8.1% rate)
Antibiotic Claims
27

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.01
Gender Split
80% female / 20% male
Age Distribution
<65: 17, 65-74: 76, 75-84: 43, 85+: 31

Top Prescribed Drugs (Medicare Part D)

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

What Kara Mayerbock, APNP, FNP 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
Levothyroxine Sodium
28
Atorvastatin Calcium
15
Lisinopril
15
Zolpidem Tartrate
15
Methylprednisolone
14
Oxycodone Hcl
12
Prednisone
12
Sertraline Hcl
12
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
11
Pantoprazole Sodium
11

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

Registered Nurse Overview

How Kara Mayerbock, APNP, FNP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

Kara Mayerbock, APNP, FNP's 431 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in Wisconsin

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

Compare Registered Nurse 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 Registered Nurse 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 Kara Mayerbock, APNP, FNP's specialty?
Kara Mayerbock, APNP, FNP specializes in Registered Nurse and practices in Germantown, Wisconsin. Credentials: APNP, FNP.
How much does Kara Mayerbock, APNP, FNP prescribe under Medicare Part D?
In 2023, Kara Mayerbock, APNP, FNP wrote 431 Medicare Part D claims totaling $32K in drug costs for 167 beneficiaries.
Where is Kara Mayerbock, APNP, FNP located?
Kara Mayerbock, APNP, FNP is located at W168N11237 WESTERN AVE, Germantown, WI, 53022. Phone: (262) 253-5060.
What is Kara Mayerbock, APNP, FNP's NPI number?
Kara Mayerbock, APNP, FNP's National Provider Identifier (NPI) is 1639890759, issued on 09/07/2022.
Does Kara Mayerbock, APNP, FNP prescribe more brand-name or generic drugs?
Kara Mayerbock, APNP, FNP's prescribing is 12% brand-name and 88% generic drugs by claim count, with $24K in brand drug costs.
Does Kara Mayerbock, APNP, FNP prescribe opioids?
Yes, Kara Mayerbock, APNP, FNP had 35 opioid claims in 2023 with an opioid prescribing rate of 8.1%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Kara Mayerbock, APNP, FNP prescribe most often?
Based on 2023 Medicare Part D data, Kara Mayerbock, APNP, FNP's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kara Mayerbock, APNP, FNP accept Medicare?
Kara Mayerbock, APNP, FNP appears in CMS Medicare data with 431 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kara Mayerbock, APNP, FNP's credentials?
Kara Mayerbock, APNP, FNP's NPI is 1639890759 with credentials APNP, FNP. 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