NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1558079384 CRNP
Verify on CMS → Walter Fasenmyer, CRNP
Adult Health Nurse Practitioner in Seneca, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 29,811 in Adult Health 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
769
Medicare Part D claims · 186 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$297.13
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Walter Fasenmyer, CRNP filed 769 Medicare Part D claims in 2024 as an Adult Health Nurse Practitioner in Seneca, Pennsylvania, prescribing 91% generic.
- 769
- Part D claims, 2024
- 91%
- generic prescribing
- $297.13
- industry payments (Sunshine Act)
- ≥70th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Walter Fasenmyer, CRNP
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1558079384), first enumerated 11/10/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 769 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$297.13 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Pennsylvania statewide board action statistics are published annually — these figures describe aggregate state activity, not Walter Fasenmyer, CRNP's individual license status. Verify directly with the state medical board.
Source: PA-BOM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1558079384 · Adult Health Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1558079384
- ENUM-RECENT 2022
- TAX-MID 30K Adult Health
- RX-LIGHT 769
- BOOK-LIGHT 1,335 in Pennsylvania
- PHOTO-ENUM Renee Davis · 2022
Walter Fasenmyer, CRNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
769 ≥ 70th percentile 70% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Walter Fasenmyer, CRNP?
Quality data not reportedPrimary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
769 40% vs specialty avg
Specialty distribution in Pennsylvania
How Adult Health Nurse Practitioner compares to other specialties among Pennsylvania 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 Adult Health 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).
Practice Address
Provider Details
| NPI | 1558079384 |
|---|---|
| Specialty | Adult Health Nurse Practitioner |
| Credentials | CRNP |
| Gender | Male |
| NPI Issued | 11/10/2022 |
Hospital and facility affiliations
Facilities where Walter Fasenmyer, CRNP 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.
Hematology Oncology Association
Seneca, PA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Walter Fasenmyer, CRNP. Source: openpaymentsdata.cms.gov.
Total received
$297
Largest payer
Janssen Biotech, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Walter Fasenmyer, CRNP. To verify Walter Fasenmyer, CRNP's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Walter Fasenmyer, CRNP - brand share 9.0%
Adult Health Nurse Practitioner average
9% brand-name claims vs 91% generic, on 769 2024 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 2024.
769
Total Claims
$66K
Total Drug Cost
186
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 930.833
- Total Day Supply
- 23,502
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $42K
- Generic Drug Cost
- $24K
- Opioid Claims
- 226 (29.4% rate)
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 2.64
- Gender Split
- 49% female / 51% male
- Age Distribution
- <65: 25, 65-74: 108, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Walter Fasenmyer, CRNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
129 claims
- Potassium Chloride
Potassium Chloride
57 claims
- Eliquis 47
Eliquis
47 claims
- Morphine Sulfate Er 32
Morphine Sulfate Er
32 claims
- Anastrozole 29
Anastrozole
29 claims
- Hydrocodone-Acetam… 27
Hydrocodone-Acetaminophen
27 claims
- Ondansetron Hcl 23
Ondansetron Hcl
23 claims
- Acyclovir 22
Acyclovir
22 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 129 |
| Potassium Chloride | 57 |
| Eliquis Apixaban | 47 |
| Morphine Sulfate Er Morphine Sulfate | 32 |
| Anastrozole | 29 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 27 |
| Ondansetron Hcl | 23 |
| Acyclovir | 22 |
| Omeprazole | 21 |
| Prednisone | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Health Nurse Practitioner Overview
How Walter Fasenmyer, CRNP fits within the Adult Health Nurse Practitioner landscape nationally.
29,811
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,291
Avg Claims per Provider
Walter Fasenmyer, CRNP's 769 claims are below the specialty average of 1,291.
Nationwide Adult Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Fasenmyer, both outside Pennsylvania so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adult Health Nurse Practitioner Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Fasenmyer.
One of 1,335 Adult Health Nurse Practitioner providers enrolled in Pennsylvania, 5 are shown here.
Sakinah Abdulkhabir
CRNP
Philadelphia, PA
Debra Abraham
ANP-BC
Havertown, PA
Elizabeth Abraham
Lansdale, PA
Frances Abraham
Pittsburgh, PA
Chinyere Achi
CRNP
Philadelphia, PA
Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Walter Fasenmyer, CRNP's specialty? ▼
Walter Fasenmyer, CRNP specializes in Adult Health Nurse Practitioner and practices in Seneca, Pennsylvania. Credentials: CRNP.
How much does Walter Fasenmyer, CRNP prescribe under Medicare Part D? ▼
In 2024, Walter Fasenmyer, CRNP wrote 769 Medicare Part D claims totaling $66K in drug costs for 186 beneficiaries.
Where is Walter Fasenmyer, CRNP located? ▼
Walter Fasenmyer, CRNP is located at 100 FAIRFIELD DR, Seneca, PA, 16346. Phone: (814) 676-7900.
What is Walter Fasenmyer, CRNP's NPI number? ▼
Walter Fasenmyer, CRNP's National Provider Identifier (NPI) is 1558079384, issued on 11/10/2022.
Does Walter Fasenmyer, CRNP prescribe more brand-name or generic drugs? ▼
Walter Fasenmyer, CRNP's prescribing is 9% brand-name and 91% generic drugs by claim count, with $42K in brand drug costs.
Does Walter Fasenmyer, CRNP prescribe opioids? ▼
Yes, Walter Fasenmyer, CRNP had 226 opioid claims in 2024 with an opioid prescribing rate of 29.4%.
How many Adult Health Nurse Practitioner providers are there in the US? ▼
There are 29,811 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,291 Medicare Part D claims per year.
What drugs does Walter Fasenmyer, CRNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Walter Fasenmyer, CRNP's most frequently prescribed drugs include Oxycodone Hcl, Potassium Chloride, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Walter Fasenmyer, CRNP accept Medicare? ▼
Walter Fasenmyer, CRNP appears in CMS Medicare data with 769 Part D claims and 186 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Walter Fasenmyer, CRNP's credentials? ▼
Walter Fasenmyer, CRNP's NPI is 1558079384 with credentials CRNP. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.