NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1851936306 NP
Verify on CMS → Breanna Zimmermann, NP
Obstetrics & Gynecology Physician in Marshfield, 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 44,326 in Obstetrics & Gynecology Physician, 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
54
Medicare Part D claims · 30 beneficiaries · Obstetrics & Gynecology Physician avg: 179
MIPS score
78.9/100
▼ 5 pts below national avg 83.5 · Above neutral
What the federal data shows
Breanna Zimmermann, NP reported a CMS MIPS final score of 78.9/100 - below the 83.5 national average - and filed 54 Medicare Part D claims in 2023.
- 78.9/100
- MIPS score · -5 vs avg
- 54
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Breanna Zimmermann, NP's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
79 23rd percentile higher than 23% of 454,083 measured providers
Each bar is a band; taller bars hold more measured 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 Breanna Zimmermann, NP sits
This provider among obstetrics & gynecology physician peers
Across the 7,360 obstetrics & gynecology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Breanna Zimmermann, NP writes more Part D claims than 29% 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
Each dot is one obstetrics & gynecology physician peer from a representative sample of 60; the gold marker is Breanna Zimmermann, NP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Breanna Zimmermann, NP practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Breanna Zimmermann, NP?
Near national averagePrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
54 70% vs specialty avg
MIPS final score
78.9/100 4.6 pts vs avg
Specialty distribution in Wisconsin
How Obstetrics & Gynecology Physician compares to other specialties among Wisconsin providers
Medicare quality performance, MIPS
Breanna Zimmermann, NP's 2023 MIPS final score plotted against the Obstetrics & Gynecology Physician national average
- MIPS Final Score
- 78.9/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Obstetrics & Gynecology Physician) - 78.9/100 vs national avg 83.5
How MIPS and board certification work
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).
Breanna Zimmermann, NP appears in the CMS NPPES registry as an Obstetrics & Gynecology Physician provider holding NP credentials at 1000 N OAK AVE, Marshfield, WI, 54449, with a listed phone of (715) 387-5511. NPI 1851936306 was issued on 11/07/2019.
Medicare Part D records for calendar year 2023 show 54 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $2K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 78.9/100 for the 2023 performance year (Quality 66.7, Cost 54.9), compared with the 83.5 average among clinicians with a measured score.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,326 enrolled providers across 56 states and an average of 179 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
Provider Details
| NPI | 1851936306 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 11/07/2019 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
78.8552
Final Score
Measured-score avg: 83.5
66.6851
Quality
54.8733
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Breanna Zimmermann, NP 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.
Mchs Hospitals Inc
Marshfield, 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.
54
Total Claims
$2K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 76
- Total Day Supply
- 1,758
- Generic Drug Cost
- $890
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 100% female / 0% male
Obstetrics & Gynecology Physician Overview
How Breanna Zimmermann, NP fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Breanna Zimmermann, NP's 54 claims are below the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Zimmermann.
Dr. Tahmina Aafreen
M.D.
Watertown, WI
Dr. Samir Abadeer
MD
Wausau, WI
Dr. Leslie Abitz
MD
Sheboygan, WI
Dr. Bruce Abrams
MD
Rhinelander, WI
Dr. Ernesto Acosta
MD
Appleton, WI
Compare Obstetrics & Gynecology Physician 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 Obstetrics & Gynecology Physician 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.
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Frequently Asked Questions
What is Breanna Zimmermann, NP's specialty? ▼
Breanna Zimmermann, NP specializes in Obstetrics & Gynecology Physician and practices in Marshfield, Wisconsin. Credentials: NP.
How much does Breanna Zimmermann, NP prescribe under Medicare Part D? ▼
In 2023, Breanna Zimmermann, NP wrote 54 Medicare Part D claims totaling $2K in drug costs for 30 beneficiaries.
What is Breanna Zimmermann, NP's Medicare quality score? ▼
Breanna Zimmermann, NP has a CMS MIPS Final Score of 78.9/100 (Quality: 66.7, Cost: 54.9). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Breanna Zimmermann, NP located? ▼
Breanna Zimmermann, NP is located at 1000 N OAK AVE, Marshfield, WI, 54449. Phone: (715) 387-5511.
What is Breanna Zimmermann, NP's NPI number? ▼
Breanna Zimmermann, NP's National Provider Identifier (NPI) is 1851936306, issued on 11/07/2019.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
Does Breanna Zimmermann, NP accept Medicare? ▼
Breanna Zimmermann, NP appears in CMS Medicare data with 54 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Breanna Zimmermann, NP's credentials? ▼
Breanna Zimmermann, NP's NPI is 1851936306 with credentials NP. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.