NPI registry status
Active
2026 NPPES data Clinical Nurse Specialist NPI 1457819591 AGCNS-BC
Verify on CMS → Kari Mongeon Wahlen, AGCNS-BC
Clinical Nurse Specialist in Mankato, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,715 in Clinical Nurse Specialist, 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
2K
Medicare Part D claims · 305 beneficiaries · Clinical Nurse Specialist avg: 953
Generic prescribing
97%
generic claims · 3% 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
Kari Mongeon Wahlen, AGCNS-BC filed 1,890 Medicare Part D claims in 2023 as a Clinical Nurse Specialist in Mankato, Minnesota, prescribing 97% generic.
- 2K
- Part D claims, 2023
- 97%
- 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.
Kari Mongeon Wahlen, AGCNS-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,890 Top 17% higher than 83% 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 Kari Mongeon Wahlen, AGCNS-BC?
Quality data not reportedPrimary specialty
Clinical Nurse Specialist
Medicare Part D claims
1,890 98% vs specialty avg
Specialty distribution in Minnesota
How Clinical Nurse Specialist compares to other specialties among Minnesota 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 Clinical Nurse Specialist. 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).
Kari Mongeon Wahlen, AGCNS-BC appears in the CMS NPPES registry as a Clinical Nurse Specialist provider holding AGCNS-BC credentials at 1025 MARSH ST, Mankato, MN, 56001, with a listed phone of (507) 625-4031. NPI 1457819591 was issued on 03/07/2019.
Medicare Part D records for calendar year 2023 show 1,890 prescription claims written by this provider, covering 305 Medicare beneficiaries and totaling roughly $182K in drug spend, split 3% brand-name and 97% generic by claim count.
Clinical Nurse Specialist is a narrow specialty nationwide, with 1,715 enrolled providers across 49 states and an average of 953 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 | 1457819591 |
|---|---|
| Specialty | Clinical Nurse Specialist |
| Credentials | AGCNS-BC |
| Gender | Female |
| NPI Issued | 03/07/2019 |
Hospital and facility affiliations
Facilities where Kari Mongeon Wahlen, AGCNS-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.
Acadia Hospital Corp.
Bangor, ME
Mayo Clinic Health System-Southwest Minnesota Region
Mankato, MN
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 · Generic-heavy
Kari Mongeon Wahlen, AGCNS-BC - brand share 3.0%
Clinical Nurse Specialist average
3% brand-name claims vs 97% generic, on 1,890 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.
1,890
Total Claims
$182K
Total Drug Cost
305
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,734
- Total Day Supply
- 107,241
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $53K
- Generic Drug Cost
- $128K
Patient Demographics
- Average Patient Age
- 77.4 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 15, 65-74: 86, 75-84: 141, 85+: 63
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kari Mongeon Wahlen, AGCNS-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Carbidopa-Levodopa
Carbidopa-Levodopa
515 claims
- Donepezil Hcl
Donepezil Hcl
336 claims
- Carbidopa-Levodopa… 162
Carbidopa-Levodopa Er
162 claims
- Memantine Hcl 158
Memantine Hcl
158 claims
- Mirtazapine 81
Mirtazapine
81 claims
- Trazodone Hcl 63
Trazodone Hcl
63 claims
- Sertraline Hcl 60
Sertraline Hcl
60 claims
- Gabapentin 55
Gabapentin
55 claims
| Drug | Claims |
|---|---|
| Carbidopa-Levodopa Carbidopa/Levodopa | 515 |
| Donepezil Hcl | 336 |
| Carbidopa-Levodopa Er Carbidopa/Levodopa | 162 |
| Memantine Hcl | 158 |
| Mirtazapine | 81 |
| Trazodone Hcl | 63 |
| Sertraline Hcl | 60 |
| Gabapentin | 55 |
| Levetiracetam | 51 |
| Lamotrigine | 44 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Clinical Nurse Specialist Overview
How Kari Mongeon Wahlen, AGCNS-BC fits within the Clinical Nurse Specialist landscape nationally.
1,715
Clinical Nurse Specialist Providers in US
49
States with Clinical Nurse Specialist
953
Avg Claims per Provider
Kari Mongeon Wahlen, AGCNS-BC's 1,890 claims are above the specialty average of 953.
Nearby Clinical Nurse Specialist Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Mongeon Wahlen.
Dr. Brittany Anderson
DNP, AGCNS-BC, CNS
Minnetonka, MN
Dr. Gay Bartholic
CNS
Arden Hills, MN
Dr. Shelly Bartsch
CNS
St Louis Park, MN
Dr. Jennifer Bauerly
CNS
St Cloud, MN
Elizabeth Bechtum
Rochester, MN
Compare Clinical Nurse Specialist 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Clinical Nurse Specialist 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 Kari Mongeon Wahlen, AGCNS-BC's specialty? ▼
Kari Mongeon Wahlen, AGCNS-BC specializes in Clinical Nurse Specialist and practices in Mankato, Minnesota. Credentials: AGCNS-BC.
How much does Kari Mongeon Wahlen, AGCNS-BC prescribe under Medicare Part D? ▼
In 2023, Kari Mongeon Wahlen, AGCNS-BC wrote 1,890 Medicare Part D claims totaling $182K in drug costs for 305 beneficiaries.
Where is Kari Mongeon Wahlen, AGCNS-BC located? ▼
Kari Mongeon Wahlen, AGCNS-BC is located at 1025 MARSH ST, Mankato, MN, 56001. Phone: (507) 625-4031.
What is Kari Mongeon Wahlen, AGCNS-BC's NPI number? ▼
Kari Mongeon Wahlen, AGCNS-BC's National Provider Identifier (NPI) is 1457819591, issued on 03/07/2019.
Does Kari Mongeon Wahlen, AGCNS-BC prescribe more brand-name or generic drugs? ▼
Kari Mongeon Wahlen, AGCNS-BC's prescribing is 3% brand-name and 97% generic drugs by claim count, with $53K in brand drug costs.
How many Clinical Nurse Specialist providers are there in the US? ▼
There are 1,715 Clinical Nurse Specialist providers across 49 states in the US. The average Clinical Nurse Specialist provider writes 953 Medicare Part D claims per year.
What drugs does Kari Mongeon Wahlen, AGCNS-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Kari Mongeon Wahlen, AGCNS-BC's most frequently prescribed drugs include Carbidopa-Levodopa, Donepezil Hcl, Carbidopa-Levodopa Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kari Mongeon Wahlen, AGCNS-BC accept Medicare? ▼
Kari Mongeon Wahlen, AGCNS-BC appears in CMS Medicare data with 1,890 Part D claims and 305 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kari Mongeon Wahlen, AGCNS-BC's credentials? ▼
Kari Mongeon Wahlen, AGCNS-BC's NPI is 1457819591 with credentials AGCNS-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.