NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1154987279 MSN, APRN, FNP-C
Verify on CMS → Sumer Walker, MSN, APRN, FNP-C
Family Nurse Practitioner in Lewes, Delaware.
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
1K
Medicare Part D claims · 370 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$419.76
13 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Sumer Walker, MSN, APRN, FNP-C filed 1,199 Medicare Part D claims in 2024 as a Family Nurse Practitioner in Lewes, Delaware, prescribing 86% generic.
- 1K
- Part D claims, 2024
- 86%
- generic prescribing
- $419.76
- industry payments (Sunshine Act)
- ≥77th
- 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 Sumer Walker, MSN, APRN, FNP-C
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 1154987279), first enumerated 05/14/2019.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,199 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
$419.76 in reported industry payments (13 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1154987279 · Family Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1154987279
- ENUM-RECENT 2019
- TAX-MEGA 217K Family Nurse
- RX-MID 1,199
- BOOK-LIGHT 607 in Delaware
- PHOTO-ENUM Danielle Groce, FNP · 2019
Sumer Walker, MSN, APRN, FNP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,199 ≥ 77th percentile 77% 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 Sumer Walker, MSN, APRN, FNP-C?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
1,199 8% vs specialty avg
Specialty distribution in Delaware
How Family Nurse Practitioner compares to other specialties among Delaware 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 | 1154987279 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | MSN, APRN, FNP-C |
| Gender | Female |
| NPI Issued | 05/14/2019 |
Hospital and facility affiliations
Facilities where Sumer Walker, MSN, APRN, FNP-C 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.
Nutrihealth LLC
Georgetown, DE
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 Sumer Walker, MSN, APRN, FNP-C. Source: openpaymentsdata.cms.gov.
Total received
$420
Largest payer
Novo Nordisk 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.
Brand vs generic prescribing mix · Typical
Sumer Walker, MSN, APRN, FNP-C - brand share 14.0%
Family Nurse Practitioner average
14% brand-name claims vs 86% generic, on 1,199 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.
1,199
Total Claims
$145K
Total Drug Cost
370
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,284.667
- Total Day Supply
- 36,273
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $119K
- Generic Drug Cost
- $26K
- Opioid Claims
- 703 (58.6% rate)
Patient Demographics
- Average Patient Age
- 66.3 years
- Avg HCC Risk Score
- 1.88
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 135, 65-74: 169, 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 Sumer Walker, MSN, APRN, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
207 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
179 claims
- Gabapentin
Gabapentin
90 claims
- Hydrocodone-Acetam… 77
Hydrocodone-Acetaminophen
77 claims
- Cyclobenzaprine Hcl 58
Cyclobenzaprine Hcl
58 claims
- Morphine Sulfate Er 58
Morphine Sulfate Er
58 claims
- Tizanidine Hcl 46
Tizanidine Hcl
46 claims
- Pregabalin 38
Pregabalin
38 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 207 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 179 |
| Gabapentin | 90 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 77 |
| Cyclobenzaprine Hcl | 58 |
| Morphine Sulfate Er Morphine Sulfate | 58 |
| Tizanidine Hcl | 46 |
| Pregabalin | 38 |
| Tramadol Hcl | 38 |
| Xtampza Er Oxycodone Myristate | 30 |
* 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 Sumer Walker, MSN, APRN, FNP-C 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
Sumer Walker, MSN, APRN, FNP-C's 1,199 claims are below the specialty average of 1,302.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Walker, both outside Delaware so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2019)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Walker.
One of 607 Family Nurse Practitioner providers enrolled in Delaware, 5 are shown here.
Sara Abbo
CRNP
Newark, DE
Jessica Abbott
MSN FNP-BC, NP-C
Milford, DE
Jillian Abbott
FNP-C
Selbyville, DE
Jessica Abernathy-Lenowitz
NP
Selbyville, DE
Katherine Abernethy
NP-C
New Castle, DE
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sumer Walker, MSN, APRN, FNP-C's specialty? ▼
Sumer Walker, MSN, APRN, FNP-C specializes in Family Nurse Practitioner and practices in Lewes, Delaware. Credentials: MSN, APRN, FNP-C.
How much does Sumer Walker, MSN, APRN, FNP-C prescribe under Medicare Part D? ▼
In 2024, Sumer Walker, MSN, APRN, FNP-C wrote 1,199 Medicare Part D claims totaling $145K in drug costs for 370 beneficiaries.
Where is Sumer Walker, MSN, APRN, FNP-C located? ▼
Sumer Walker, MSN, APRN, FNP-C is located at 18335 COASTAL HWY, Lewes, DE, 19958. Phone: (302) 400-9999.
What is Sumer Walker, MSN, APRN, FNP-C's NPI number? ▼
Sumer Walker, MSN, APRN, FNP-C's National Provider Identifier (NPI) is 1154987279, issued on 05/14/2019.
Does Sumer Walker, MSN, APRN, FNP-C prescribe more brand-name or generic drugs? ▼
Sumer Walker, MSN, APRN, FNP-C's prescribing is 14% brand-name and 86% generic drugs by claim count, with $119K in brand drug costs.
Does Sumer Walker, MSN, APRN, FNP-C prescribe opioids? ▼
Yes, Sumer Walker, MSN, APRN, FNP-C had 703 opioid claims in 2024 with an opioid prescribing rate of 58.6%.
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 Sumer Walker, MSN, APRN, FNP-C prescribe most often? ▼
Based on 2024 Medicare Part D data, Sumer Walker, MSN, APRN, FNP-C's most frequently prescribed drugs include Oxycodone Hcl, Oxycodone-Acetaminophen, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sumer Walker, MSN, APRN, FNP-C accept Medicare? ▼
Sumer Walker, MSN, APRN, FNP-C appears in CMS Medicare data with 1,199 Part D claims and 370 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sumer Walker, MSN, APRN, FNP-C's credentials? ▼
Sumer Walker, MSN, APRN, FNP-C's NPI is 1154987279 with credentials MSN, APRN, FNP-C. 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.