NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1427427335 PA
Verify on CMS → Madeleine Grumbles, PA
Medical Physician Assistant in Greenville, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,694 in Medical 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
85
Medicare Part D claims · 46 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$198.04
10 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Madeleine Grumbles, PA filed 85 Medicare Part D claims in 2024 as a Medical Physician Assistant in Greenville, South Carolina, prescribing 62% generic.
- 85
- Part D claims, 2024
- 62%
- generic prescribing
- $198.04
- industry payments (Sunshine Act)
- ≥0th
- 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 Madeleine Grumbles, PA
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 1427427335), first enumerated 09/21/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 85 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
$198.04 in reported industry payments (10 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.
Compare Grumbles with other Medical Physician Assistant providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in South Carolina
- Rana Abedini, PA-C Greenville, SC
- Omotola Adebayo, NP Seneca, SC
- Amy Alexander, PA-C Columbia, SC
- Dyllan Alfaro Myrtle Beach, SC
- Diana Alford, P.A. Summerville, SC
- Eugene Ancrum, PA North Charleston, SC
Other specialties in Greenville: Behavior Technician (495) · Certified Registered Nurse Anesthetist (465) · Family Nurse Practitioner (453) · Physical Therapist (413)
CMS NPPES provider registry desk
NPI 1427427335 · Medical Physician Assistant
NPI-10 · ENUM-MID · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1427427335
- ENUM-MID 2015
- TAX-MID 41K Medical Physician
- RX-TRACE 85
- BOOK-LIGHT 521 in South Carolina
- PHOTO-ENUM Brittany Kershaw, PA-C · 2015
Madeleine Grumbles, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
85 ≥ 0th percentile 0% 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 Madeleine Grumbles, PA?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
85 93% vs specialty avg
Specialty distribution in South Carolina
How Medical Physician Assistant compares to other specialties among South Carolina 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 Medical 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 | 1427427335 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 09/21/2015 |
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 Madeleine Grumbles, PA. Source: openpaymentsdata.cms.gov.
Total received
$198
Largest payer
ABBVIE 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
Madeleine Grumbles, PA - brand share 38.0%
Medical Physician Assistant average
38% brand-name claims vs 62% generic, on 85 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.
85
Total Claims
$30K
Total Drug Cost
46
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 106.033
- Total Day Supply
- 2,311
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $27K
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 67.4 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How Madeleine Grumbles, PA fits within the Medical Physician Assistant landscape nationally.
40,694
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,139
Avg Claims per Provider
Madeleine Grumbles, PA's 85 claims are below the specialty average of 1,139.
Nationwide Medical Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Grumbles, both outside South Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical Physician Assistant Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Grumbles.
One of 521 Medical Physician Assistant providers enrolled in South Carolina, 11 are shown on this page.
Katherine Anderson
PA
Greenville, SC
John Ashton
PA-C
Irmo, SC
Jami Auslander
PA-C
Charleston, SC
Caroline Bailey
PA
Charleston, SC
Maureen Bailey-Nutting
PA
Greenville, SC
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Madeleine Grumbles, PA's specialty? ▼
Madeleine Grumbles, PA specializes in Medical Physician Assistant and practices in Greenville, South Carolina. Credentials: PA.
How much does Madeleine Grumbles, PA prescribe under Medicare Part D? ▼
In 2024, Madeleine Grumbles, PA wrote 85 Medicare Part D claims totaling $30K in drug costs for 46 beneficiaries.
Where is Madeleine Grumbles, PA located? ▼
Madeleine Grumbles, PA is located at 890 W FARIS RD STE 100, Greenville, SC, 29605. Phone: (864) 455-2888.
What is Madeleine Grumbles, PA's NPI number? ▼
Madeleine Grumbles, PA's National Provider Identifier (NPI) is 1427427335, issued on 09/21/2015.
Does Madeleine Grumbles, PA prescribe more brand-name or generic drugs? ▼
Madeleine Grumbles, PA's prescribing is 38% brand-name and 62% generic drugs by claim count, with $27K in brand drug costs.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,694 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,139 Medicare Part D claims per year.
What drugs does Madeleine Grumbles, PA prescribe most often? ▼
Based on 2024 Medicare Part D data, Madeleine Grumbles, PA's most frequently prescribed drugs include Sod Sulf-Potass Sulf-Mag Sulf. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Madeleine Grumbles, PA accept Medicare? ▼
Madeleine Grumbles, PA appears in CMS Medicare data with 85 Part D claims and 46 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Madeleine Grumbles, PA's credentials? ▼
Madeleine Grumbles, PA's NPI is 1427427335 with credentials PA. 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.