NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1558966614 MSPAS
Verify on CMS → Clare Holmes, MSPAS
Physician Assistant 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 156,084 in Physician Assistant, 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
778
Medicare Part D claims · 213 beneficiaries · Physician Assistant avg: 832
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$554.52
16 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Clare Holmes, MSPAS filed 778 Medicare Part D claims in 2024 as a Physician Assistant in Lewes, Delaware, prescribing 62% generic.
- 778
- Part D claims, 2024
- 62%
- generic prescribing
- $554.52
- 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 Clare Holmes, MSPAS
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 1558966614), first enumerated 12/04/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 778 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$554.52 in reported industry payments (16 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 1558966614 · Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1558966614
- ENUM-RECENT 2020
- TAX-MEGA 156K Physician Assistant
- RX-LIGHT 778
- BOOK-LIGHT 664 in Delaware
- PHOTO-ENUM Tracy Vo · 2020
Clare Holmes, MSPAS's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
778 ≥ 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 Clare Holmes, MSPAS?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
778 6% vs specialty avg
Specialty distribution in Delaware
How Physician Assistant 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 Physician Assistant. 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 | 1558966614 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | MSPAS |
| Gender | Female |
| NPI Issued | 12/04/2020 |
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 Clare Holmes, MSPAS. Source: openpaymentsdata.cms.gov.
Total received
$555
Largest payer
Gilead Sciences, 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 · Above average
Clare Holmes, MSPAS - brand share 38.0%
Physician Assistant average
38% brand-name claims vs 62% generic, on 778 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.
778
Total Claims
$1.1M
Total Drug Cost
213
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 976.8
- Total Day Supply
- 22,954
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $1.1M
- Generic Drug Cost
- $29K
- Antibiotic Claims
- 396
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 16, 65-74: 128, 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 Clare Holmes, MSPAS prescribes most
Top Medicare Part D drugs by claim count, 2024
- Azithromycin
Azithromycin
99 claims
- Biktarvy
Biktarvy
84 claims
- Atovaquone-Proguan…
Atovaquone-Proguanil Hcl
62 claims
- Amoxicillin
Amoxicillin
52 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
46 claims
- Odefsey 34
Odefsey
34 claims
- Genvoya 28
Genvoya
28 claims
- Juluca 26
Juluca
26 claims
| Drug | Claims |
|---|---|
| Azithromycin | 99 |
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 84 |
| Atovaquone-Proguanil Hcl Atovaquone/Proguanil Hcl | 62 |
| Amoxicillin | 52 |
| Doxycycline Monohydrate | 46 |
| Odefsey Emtricitab/Rilpiviri/Tenof Ala | 34 |
| Genvoya Elviteg/Cob/Emtri/Tenof Alafen | 28 |
| Juluca Dolutegravir/Rilpivirine | 26 |
| Descovy Emtricitabine/Tenofov Alafenam | 20 |
| Meropenem | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Clare Holmes, MSPAS fits within the Physician Assistant landscape nationally.
156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider
Clare Holmes, MSPAS's 778 claims are below the specialty average of 832.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Holmes, both outside Delaware so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Holmes.
One of 664 Physician Assistant providers enrolled in Delaware, 5 are shown here.
Carol Abboud
P.A.
Newark, DE
Erica Abdallah
PA
Wilmington, DE
Maryam Abdur-Rahman
PA-C
Newark, DE
Eyosias Abiy
Newark, DE
Anastazia Acevedo
PA-C
Dover, DE
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Clare Holmes, MSPAS's specialty? ▼
Clare Holmes, MSPAS specializes in Physician Assistant and practices in Lewes, Delaware. Credentials: MSPAS.
How much does Clare Holmes, MSPAS prescribe under Medicare Part D? ▼
In 2024, Clare Holmes, MSPAS wrote 778 Medicare Part D claims totaling $1.1M in drug costs for 213 beneficiaries.
Where is Clare Holmes, MSPAS located? ▼
Clare Holmes, MSPAS is located at 1535 SAVANNAH RD, Lewes, DE, 19958. Phone: (302) 645-3232.
What is Clare Holmes, MSPAS's NPI number? ▼
Clare Holmes, MSPAS's National Provider Identifier (NPI) is 1558966614, issued on 12/04/2020.
Does Clare Holmes, MSPAS prescribe more brand-name or generic drugs? ▼
Clare Holmes, MSPAS's prescribing is 38% brand-name and 62% generic drugs by claim count, with $1.1M in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
What drugs does Clare Holmes, MSPAS prescribe most often? ▼
Based on 2024 Medicare Part D data, Clare Holmes, MSPAS's most frequently prescribed drugs include Azithromycin, Biktarvy, Atovaquone-Proguanil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Clare Holmes, MSPAS accept Medicare? ▼
Clare Holmes, MSPAS appears in CMS Medicare data with 778 Part D claims and 213 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Clare Holmes, MSPAS's credentials? ▼
Clare Holmes, MSPAS's NPI is 1558966614 with credentials MSPAS. 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.