NPI registry status
Active
2026 NPPES data Interventional Cardiology Physician NPI 1356307318 M.D.
Verify on CMS → William Ellison, M.D.
Interventional Cardiology Physician in Charleston, 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 3,400 in Interventional Cardiology Physician, 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
186
Medicare Part D claims · 85 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$142.68
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Ellison, M.D. filed 186 Medicare Part D claims in 2023 as a Interventional Cardiology Physician in Charleston, South Carolina, prescribing 75% generic.
- 186
- Part D claims, 2023
- 75%
- generic prescribing
- $142.68
- industry payments (Sunshine Act)
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.
William Ellison, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
186 35th percentile higher than 35% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
William Ellison, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about William Ellison, M.D.?
Quality data not reportedPrimary specialty
Interventional Cardiology Physician
Medicare Part D claims
186 94% vs specialty avg
Specialty distribution in South Carolina
How Interventional Cardiology Physician 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 Interventional Cardiology Physician. 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).
William Ellison, M.D. appears in the CMS NPPES registry as an Interventional Cardiology Physician provider holding M.D. credentials at 1033 SAINT ANDREWS BLVD, Charleston, SC, 29407, with a listed phone of (843) 723-6111. NPI 1356307318 was issued on 04/26/2006.
Medicare Part D records for calendar year 2023 show 186 prescription claims written by this provider, covering 85 Medicare beneficiaries and totaling roughly $54K in drug spend, split 25% brand-name and 75% generic by claim count.
Interventional Cardiology Physician is a narrow specialty nationwide, with 3,400 enrolled providers across 53 states and an average of 2,984 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1356307318 |
|---|---|
| Specialty | Interventional Cardiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/26/2006 |
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 William Ellison, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$143
Largest payer
ABIOMED
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
William Ellison, M.D. - brand share 25.0%
Interventional Cardiology Physician average
25% brand-name claims vs 75% generic, on 186 2023 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 2023.
186
Total Claims
$54K
Total Drug Cost
85
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 461
- Total Day Supply
- 13,805
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $50K
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 78.7 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 35% female / 65% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Ellison, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
23 claims
- Atorvastatin Calcium
Atorvastatin Calcium
18 claims
- Metoprolol Succinate
Metoprolol Succinate
17 claims
- Xarelto
Xarelto
15 claims
- Furosemide
Furosemide
12 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 23 |
| Atorvastatin Calcium | 18 |
| Metoprolol Succinate | 17 |
| Xarelto Rivaroxaban | 15 |
| Furosemide | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Interventional Cardiology Physician in SC →
All providers in South Carolina →
Compare specialties →
Interventional Cardiology Physician Overview
How William Ellison, M.D. fits within the Interventional Cardiology Physician landscape nationally.
3,400
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider
William Ellison, M.D.'s 186 claims are below the specialty average of 2,984.
Nearby Interventional Cardiology Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Ellison.
Dr. Summer Aldrugh
M.D.
Columbia, SC
Faisal Alkhatib Tamimi
Columbia, SC
Dr. Nicholas Amoroso
M.D.
Pawleys Island, SC
Dr. Kazim Aykent
MD
Florence, SC
Dr. Gerald Bauknight
MD
Columbia, SC
Compare Interventional Cardiology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Interventional Cardiology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is William Ellison, M.D.'s specialty? ▼
William Ellison, M.D. specializes in Interventional Cardiology Physician and practices in Charleston, South Carolina. Credentials: M.D..
How much does William Ellison, M.D. prescribe under Medicare Part D? ▼
In 2023, William Ellison, M.D. wrote 186 Medicare Part D claims totaling $54K in drug costs for 85 beneficiaries.
Where is William Ellison, M.D. located? ▼
William Ellison, M.D. is located at 1033 SAINT ANDREWS BLVD, Charleston, SC, 29407. Phone: (843) 723-6111.
What is William Ellison, M.D.'s NPI number? ▼
William Ellison, M.D.'s National Provider Identifier (NPI) is 1356307318, issued on 04/26/2006.
Does William Ellison, M.D. prescribe more brand-name or generic drugs? ▼
William Ellison, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $50K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US? ▼
There are 3,400 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does William Ellison, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, William Ellison, M.D.'s most frequently prescribed drugs include Eliquis, Atorvastatin Calcium, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Ellison, M.D. accept Medicare? ▼
William Ellison, M.D. appears in CMS Medicare data with 186 Part D claims and 85 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Ellison, M.D.'s credentials? ▼
William Ellison, M.D.'s NPI is 1356307318 with credentials M.D.. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.