NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1013472059 MSN, APRN
Verify on CMS → Katherine Stemen, MSN, APRN
Primary Care Nurse Practitioner in Powell, Ohio.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,179 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
2K
Medicare Part D claims · 231 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
88%
generic claims · 11% 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
Katherine Stemen, MSN, APRN filed 1,594 Medicare Part D claims in 2023 as a Primary Care Nurse Practitioner in Powell, Ohio, prescribing 88% generic.
- 2K
- 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.
Katherine Stemen, MSN, APRN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,594 Top 19% higher than 81% 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 Katherine Stemen, MSN, APRN?
Quality data not reportedPrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
1,594 17% vs specialty avg
Specialty distribution in Ohio
How Primary Care Nurse Practitioner compares to other specialties among Ohio 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 Primary Care 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).
Katherine Stemen, MSN, APRN appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding MSN, APRN credentials at 4141 N HAMPTON DR STE 200, Powell, OH, 43065, with a listed phone of (614) 764-0200. NPI 1013472059 was issued on 02/04/2019.
Medicare Part D records for calendar year 2023 show 1,594 prescription claims written by this provider, covering 231 Medicare beneficiaries and totaling roughly $101K in drug spend, split 11% brand-name and 88% generic by claim count.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,179 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
Provider Details
| NPI | 1013472059 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Credentials | MSN, APRN |
| Gender | Female |
| NPI Issued | 02/04/2019 |
Hospital and facility affiliations
Facilities where Katherine Stemen, MSN, APRN 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.
Ohiohealth Corporation
Powell, OH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Ohio OMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~48K Ohio medical licensees in 2023 - they are NOT specific to Katherine Stemen, MSN, APRN. To verify Katherine Stemen, MSN, APRN's current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases
OMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Katherine Stemen, MSN, APRN - brand share 11.0%
Primary Care Nurse Practitioner average
11% brand-name claims vs 88% generic, on 1,594 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.
1,594
Total Claims
$101K
Total Drug Cost
231
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,730
- Total Day Supply
- 106,061
- Brand vs Generic
- 11% brand / 88% generic
- Brand Drug Cost
- $80K
- Generic Drug Cost
- $20K
- Antibiotic Claims
- 93
Patient Demographics
- Average Patient Age
- 74.3 years
- Avg HCC Risk Score
- 1.01
- Gender Split
- 60% female / 40% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Katherine Stemen, MSN, APRN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
119 claims
- Lisinopril
Lisinopril
70 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
69 claims
- Losartan Potassium
Losartan Potassium
66 claims
- Amlodipine Besylate
Amlodipine Besylate
65 claims
- Levothyroxine Sodium
Levothyroxine Sodium
62 claims
- Hydrochlorothiazide
Hydrochlorothiazide
58 claims
- Omeprazole 47
Omeprazole
47 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 119 |
| Lisinopril | 70 |
| Rosuvastatin Calcium | 69 |
| Losartan Potassium | 66 |
| Amlodipine Besylate | 65 |
| Levothyroxine Sodium | 62 |
| Hydrochlorothiazide | 58 |
| Omeprazole | 47 |
| Pantoprazole Sodium | 39 |
| Metoprolol Succinate | 37 |
* 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 Katherine Stemen, MSN, APRN fits within the Primary Care Nurse Practitioner landscape nationally.
10,179
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Katherine Stemen, MSN, APRN's 1,594 claims are above the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in Ohio
Other clinicians with the same primary specialty enrolled in Ohio, drawn from the same CMS NPPES roster as Stemen.
Dr. Nargis Abdelmessih
APRN/CNP
Richmond Hts, OH
Dr. Synthia Abekah
MSN, APRN, FNP-C
Dublin, OH
Margaret Achampong
Cincinnati, OH
Dr. Taiwo Adebayo
N.P
Peebles, OH
Qadra Aden
Newark, OH
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 Ohio 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.
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Frequently Asked Questions
What is Katherine Stemen, MSN, APRN's specialty? ▼
Katherine Stemen, MSN, APRN specializes in Primary Care Nurse Practitioner and practices in Powell, Ohio. Credentials: MSN, APRN.
How much does Katherine Stemen, MSN, APRN prescribe under Medicare Part D? ▼
In 2023, Katherine Stemen, MSN, APRN wrote 1,594 Medicare Part D claims totaling $101K in drug costs for 231 beneficiaries.
Where is Katherine Stemen, MSN, APRN located? ▼
Katherine Stemen, MSN, APRN is located at 4141 N HAMPTON DR STE 200, Powell, OH, 43065. Phone: (614) 764-0200.
What is Katherine Stemen, MSN, APRN's NPI number? ▼
Katherine Stemen, MSN, APRN's National Provider Identifier (NPI) is 1013472059, issued on 02/04/2019.
Does Katherine Stemen, MSN, APRN prescribe more brand-name or generic drugs? ▼
Katherine Stemen, MSN, APRN's prescribing is 11% brand-name and 88% generic drugs by claim count, with $80K in brand drug costs.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,179 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 Katherine Stemen, MSN, APRN prescribe most often? ▼
Based on 2023 Medicare Part D data, Katherine Stemen, MSN, APRN's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Stemen, MSN, APRN accept Medicare? ▼
Katherine Stemen, MSN, APRN appears in CMS Medicare data with 1,594 Part D claims and 231 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Stemen, MSN, APRN's credentials? ▼
Katherine Stemen, MSN, APRN's NPI is 1013472059 with credentials MSN, APRN. 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.