NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1093705865 ARNP, CFNP
Verify on CMS → Amy Walchenbach, ARNP, CFNP
Family Nurse Practitioner in Oak Harbor, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 216,959 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
4K
Medicare Part D claims · 322 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Amy Walchenbach, ARNP, CFNP filed 4,194 Medicare Part D claims in 2024 as a Family Nurse Practitioner in Oak Harbor, Washington, prescribing 90% generic.
- 4K
- Part D claims, 2024
- 90%
- generic prescribing
- ≥92nd
- 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 Amy Walchenbach, ARNP, CFNP
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 1093705865), first enumerated 10/24/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,194 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
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Amy Walchenbach, ARNP, CFNP's individual license status. Verify directly with the state medical board.
Source: WMC 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 1093705865 · Family Nurse Practitioner
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1093705865
- ENUM-LEGACY 2005
- TAX-MEGA 217K Family Nurse
- RX-MID 4,194
- BOOK-LIGHT 3,181 in Washington
- PHOTO-ENUM Karla Morrow · 2005
Amy Walchenbach, ARNP, CFNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,194 ≥ 92nd percentile 92% 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 Amy Walchenbach, ARNP, CFNP?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
4,194 222% vs specialty avg
Specialty distribution in Washington
How Family Nurse Practitioner compares to other specialties among Washington 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).
Practice Address
Provider Details
| NPI | 1093705865 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | ARNP, CFNP |
| Gender | Female |
| NPI Issued | 10/24/2005 |
Hospital and facility affiliations
Facilities where Amy Walchenbach, ARNP, CFNP 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.
Whidbey Island Public Hospital District
Oak Harbor, WA
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 - Washington WMC 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 ~34K Washington medical licensees in 2023 - they are NOT specific to Amy Walchenbach, ARNP, CFNP. To verify Amy Walchenbach, ARNP, CFNP's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases
WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Amy Walchenbach, ARNP, CFNP - brand share 9.0%
Family Nurse Practitioner average
9% brand-name claims vs 90% generic, on 4,194 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.
4,194
Total Claims
$245K
Total Drug Cost
322
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,395.067
- Total Day Supply
- 306,950
- Brand vs Generic
- 9% brand / 90% generic
- Brand Drug Cost
- $175K
- Generic Drug Cost
- $68K
- Opioid Claims
- 14 (0.3% rate)
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 0.94
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 43, 65-74: 148, 75-84: 107, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Amy Walchenbach, ARNP, CFNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
245 claims
- Lisinopril
Lisinopril
234 claims
- Losartan Potassium
Losartan Potassium
220 claims
- Amlodipine Besylate
Amlodipine Besylate
202 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
183 claims
- Levothyroxine Sodium
Levothyroxine Sodium
150 claims
- Omeprazole
Omeprazole
115 claims
- Gabapentin
Gabapentin
114 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 245 |
| Lisinopril | 234 |
| Losartan Potassium | 220 |
| Amlodipine Besylate | 202 |
| Rosuvastatin Calcium | 183 |
| Levothyroxine Sodium | 150 |
| Omeprazole | 115 |
| Gabapentin | 114 |
| Metformin Hcl | 107 |
| Metoprolol Succinate | 106 |
* 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 Amy Walchenbach, ARNP, CFNP fits within the Family Nurse Practitioner landscape nationally.
216,959
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,302
Avg Claims per Provider
Amy Walchenbach, ARNP, CFNP's 4,194 claims are above the specialty average of 1,302.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Walchenbach, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Walchenbach.
One of 3,181 Family Nurse Practitioner providers enrolled in Washington, 5 are shown here.
Erin Aas
ARNP
Oak Harbor, WA
Amma Ababio
Sunnyside, WA
Kimberly Abbey
NP
Bellevue, WA
Mary Abbott
ARNP, FNP-C
Tacoma, WA
Nurto Abdulla
Seattle, WA
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Amy Walchenbach, ARNP, CFNP's specialty? ▼
Amy Walchenbach, ARNP, CFNP specializes in Family Nurse Practitioner and practices in Oak Harbor, Washington. Credentials: ARNP, CFNP.
How much does Amy Walchenbach, ARNP, CFNP prescribe under Medicare Part D? ▼
In 2024, Amy Walchenbach, ARNP, CFNP wrote 4,194 Medicare Part D claims totaling $245K in drug costs for 322 beneficiaries.
Where is Amy Walchenbach, ARNP, CFNP located? ▼
Amy Walchenbach, ARNP, CFNP is located at 275 SE CABOT DR STE B101, Oak Harbor, WA, 98277. Phone: (360) 675-6648.
What is Amy Walchenbach, ARNP, CFNP's NPI number? ▼
Amy Walchenbach, ARNP, CFNP's National Provider Identifier (NPI) is 1093705865, issued on 10/24/2005.
Does Amy Walchenbach, ARNP, CFNP prescribe more brand-name or generic drugs? ▼
Amy Walchenbach, ARNP, CFNP's prescribing is 9% brand-name and 90% generic drugs by claim count, with $175K in brand drug costs.
Does Amy Walchenbach, ARNP, CFNP prescribe opioids? ▼
Yes, Amy Walchenbach, ARNP, CFNP had 14 opioid claims in 2024 with an opioid prescribing rate of 0.3%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 216,959 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,302 Medicare Part D claims per year.
What drugs does Amy Walchenbach, ARNP, CFNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Amy Walchenbach, ARNP, CFNP's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amy Walchenbach, ARNP, CFNP accept Medicare? ▼
Amy Walchenbach, ARNP, CFNP appears in CMS Medicare data with 4,194 Part D claims and 322 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amy Walchenbach, ARNP, CFNP's credentials? ▼
Amy Walchenbach, ARNP, CFNP's NPI is 1093705865 with credentials ARNP, CFNP. 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.