NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1558728337 FNP-BC
Verify on CMS → Shanna Dierker, FNP-BC
Family Nurse Practitioner in Appleton, 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 210,832 in Family 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
3K
Medicare Part D claims · 416 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Shanna Dierker, FNP-BC filed 3,242 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Appleton, Wisconsin, prescribing 75% generic.
- 3K
- Part D claims, 2023
- 75%
- 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.
Shanna Dierker, FNP-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,242 Top 11% higher than 89% of 1,370,886 prescribers
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 Shanna Dierker, FNP-BC?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
3,242 165% vs specialty avg
Specialty distribution in Wisconsin
How Family Nurse Practitioner compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Nurse Practitioner. Verify directly:
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).
Shanna Dierker, FNP-BC appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP-BC credentials at 3925 N GATEWAY DR, Appleton, WI, 54913, with a listed phone of (920) 702-6371. NPI 1558728337 was issued on 01/25/2016.
Medicare Part D records for calendar year 2023 show 3,242 prescription claims written by this provider, covering 416 Medicare beneficiaries and totaling roughly $669K in drug spend, split 25% brand-name and 75% generic by claim count.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 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
Provider Details
| NPI | 1558728337 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP-BC |
| Gender | Female |
| NPI Issued | 01/25/2016 |
Hospital and facility affiliations
Facilities where Shanna Dierker, FNP-BC 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.
According to CMS billing records, Shanna Dierker, FNP-BC is affiliated with 3 Medicare-billing facilities across 2 states, 1 of which carry a CMS Hospital overall star rating.
Blessing Hospital
★★★★☆ 4/5
Quincy, IL
Acute Care Hospitals
CMS CCN: 140015
Thedacare Incorporated
Appleton, WI
Thedacare Medical Center - Shawano, Inc.
Shawano, 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 · Above average
Shanna Dierker, FNP-BC - brand share 25.0%
Family Nurse Practitioner average
25% brand-name claims vs 75% generic, on 3,242 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.
3,242
Total Claims
$669K
Total Drug Cost
416
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,096
- Total Day Supply
- 182,051
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $623K
- Generic Drug Cost
- $47K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 1.69
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 22, 65-74: 156, 75-84: 171, 85+: 67
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shanna Dierker, FNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
521 claims
- Metoprolol Succinate
Metoprolol Succinate
271 claims
- Furosemide 187
Furosemide
187 claims
- Lisinopril 175
Lisinopril
175 claims
- Carvedilol 152
Carvedilol
152 claims
- Spironolactone 151
Spironolactone
151 claims
- Xarelto 134
Xarelto
134 claims
- Torsemide 128
Torsemide
128 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 521 |
| Metoprolol Succinate | 271 |
| Furosemide | 187 |
| Lisinopril | 175 |
| Carvedilol | 152 |
| Spironolactone | 151 |
| Xarelto Rivaroxaban | 134 |
| Torsemide | 128 |
| Potassium Chloride | 115 |
| Sotalol Sotalol Hcl | 115 |
* 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 Shanna Dierker, FNP-BC fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Shanna Dierker, FNP-BC's 3,242 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 Dierker.
Dr. Amanda Abaya
APNP
Appleton, WI
Dr. Monaliza Abdela
FNP
Brookfield, WI
Dr. Mohamed Abdelazim
APNP
Appleton, WI
Ayia Abdeljabbar
Oak Creek, WI
Dr. Caroline Abel
APNP
Neenah, WI
Compare Family 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 Family 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.
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Frequently Asked Questions
What is Shanna Dierker, FNP-BC's specialty? ▼
Shanna Dierker, FNP-BC specializes in Family Nurse Practitioner and practices in Appleton, Wisconsin. Credentials: FNP-BC.
How much does Shanna Dierker, FNP-BC prescribe under Medicare Part D? ▼
In 2023, Shanna Dierker, FNP-BC wrote 3,242 Medicare Part D claims totaling $669K in drug costs for 416 beneficiaries.
Where is Shanna Dierker, FNP-BC located? ▼
Shanna Dierker, FNP-BC is located at 3925 N GATEWAY DR, Appleton, WI, 54913. Phone: (920) 702-6371.
What is Shanna Dierker, FNP-BC's NPI number? ▼
Shanna Dierker, FNP-BC's National Provider Identifier (NPI) is 1558728337, issued on 01/25/2016.
Does Shanna Dierker, FNP-BC prescribe more brand-name or generic drugs? ▼
Shanna Dierker, FNP-BC's prescribing is 25% brand-name and 75% generic drugs by claim count, with $623K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 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 Shanna Dierker, FNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Shanna Dierker, FNP-BC's most frequently prescribed drugs include Eliquis, Metoprolol Succinate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shanna Dierker, FNP-BC accept Medicare? ▼
Shanna Dierker, FNP-BC appears in CMS Medicare data with 3,242 Part D claims and 416 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shanna Dierker, FNP-BC's credentials? ▼
Shanna Dierker, FNP-BC's NPI is 1558728337 with credentials FNP-BC. 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.
- 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.
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.