2026 NPPES data Vascular Neurology Physician NPI 1669462446 MD
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WILLIAM CARROLL, MD

Vascular Neurology Physician in COLUMBUS, Ohio. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 249 beneficiaries · Vascular Neurology Physician avg: 378
MIPS score
81.3083/100
▼ 2 pts below national avg 83.1 · [object Object]
Industry payments
$16.72
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: WILLIAM CARROLL, MD is a Vascular Neurology Physician ([object Object]) practicing in COLUMBUS, Ohio with a Medicare Part D prescribing footprint of 2K claims across 249 beneficiaries . Their CMS MIPS Final Score of 81.3083/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $16.72 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

WILLIAM CARROLL, MD reported a CMS MIPS final score of 81.3083/100 — below the 83.1 national average — and filed 1,878 Medicare Part D claims in 2023.

81.3083/100
MIPS score · -2 vs avg
2K
Part D claims, 2023
Likely
board-certified (heuristic)

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 CARROLL, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

81 36th percentile higher than 36% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

WILLIAM CARROLL, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

WILLIAM CARROLL, MD at a glance

Near national average

NPI registry status

Active

Issued 10/24/2005

NPI 1669462446

Primary specialty

Vascular Neurology Physician

Niche

555 US NPIs in this specialty

Medicare Part D claims

1,878 397% vs specialty avg

2023 prescription claims

Specialty avg: 378

MIPS final score

81.3083/100 1.7916999999999916% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Ohio

How Vascular Neurology Physician compares to other specialties among Ohio providers

Ohio providers

Vascular Neurology Physician share within Ohio

1. Vascular Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Vascular Neurology Physician share within Ohio

Medicare quality performance — MIPS

WILLIAM CARROLL, MD's 2023 MIPS final score plotted against the Vascular Neurology Physician national average

Near national average
MIPS Final Score
81.3083/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Vascular Neurology Physician) — 81.3083/100 vs national avg 83.1

0%100%National avg83%81.3%
MIPS final score (Vascular Neurology Physician) — 81.3083/100 vs national avg 83.1

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 CARROLL, MD is a Vascular Neurology Physician provider practicing in COLUMBUS, Ohio, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1669462446. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

WILLIAM CARROLL, MD appears in the CMS NPPES registry as a Vascular Neurology Physician provider holding MD credentials at 285 E STATE ST, COLUMBUS, OH, 43215, with a listed phone of (614) 566-9777. NPI 1669462446 was issued on 10/24/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CARROLL most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,878 prescription claims written by this provider, covering 249 Medicare beneficiaries and totaling roughly $338K in drug spend, with an opioid prescribing rate of 1.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.3083/100 for the 2023 performance year (Quality 73.5834, Cost 65.7777), compared with the national average of 83.1.

Vascular Neurology Physician is a narrow specialty nationwide, with 555 enrolled providers across 47 states and an average of 378 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

285 E STATE ST
COLUMBUS, OH 43215

Provider Details

NPI 1669462446
Specialty Vascular Neurology Physician
Credentials MD
Gender Male
NPI Issued 10/24/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

81.3083
Final Score
Avg: 83.1
73.5834
Quality
65.7777
Cost
98
Promoting Interoperability

Reporting: Group practice

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 CARROLL, MD. Source: openpaymentsdata.cms.gov.

Total received

$17

Largest payer

CATALYST PHARMACEUTICALS, INC.

Most common payment type

Education

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.

License & disciplinary context — Ohio OMB 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 ~48K Ohio medical licensees in 2023 — they are NOT specific to WILLIAM CARROLL, MD. To verify WILLIAM CARROLL, MD's current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases

OMB 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 Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,878
Total Claims
$338K
Total Drug Cost
249
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,959
Total Day Supply
86,994
Generic Drug Cost
$96K
Opioid Claims
31 (1.7% rate)

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
1.50
Gender Split
67% female / 33% male
Age Distribution
<65: 76, 65-74: 107, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Topiramate
194
Levetiracetam
104
Aimovig Autoinjector
Erenumab-Aooe
99
Lacosamide
95
Gabapentin
88
Duloxetine Hcl
80
Primidone
78
Donepezil Hcl
67
Lamotrigine
51
Carbidopa-Levodopa
Carbidopa/Levodopa
46

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Vascular Neurology Physician Overview

How WILLIAM CARROLL, MD fits within the Vascular Neurology Physician landscape nationally.

555
Vascular Neurology Physician Providers in US
47
States with Vascular Neurology Physician
378
Avg Claims per Provider

WILLIAM CARROLL, MD's 1,878 claims are above the specialty average of 378.

Nearby Vascular Neurology Physician Providers in Ohio

Other clinicians with the same primary specialty enrolled in Ohio, drawn from the same CMS NPPES roster as CARROLL.

Compare Vascular Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM CARROLL, MD's specialty?
WILLIAM CARROLL, MD specializes in Vascular Neurology Physician and practices in COLUMBUS, Ohio. Credentials: MD.
How much does WILLIAM CARROLL, MD prescribe under Medicare Part D?
In 2023, WILLIAM CARROLL, MD wrote 1,878 Medicare Part D claims totaling $338K in drug costs for 249 beneficiaries.
What is WILLIAM CARROLL, MD's Medicare quality score?
WILLIAM CARROLL, MD has a CMS MIPS Final Score of 81.3083/100 (Quality: 73.5834, Cost: 65.7777). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM CARROLL, MD located?
WILLIAM CARROLL, MD is located at 285 E STATE ST, COLUMBUS, OH, 43215. Phone: (614) 566-9777.
What is WILLIAM CARROLL, MD's NPI number?
WILLIAM CARROLL, MD's National Provider Identifier (NPI) is 1669462446, issued on 10/24/2005.
Does WILLIAM CARROLL, MD prescribe opioids?
Yes, WILLIAM CARROLL, MD had 31 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
How many Vascular Neurology Physician providers are there in the US?
There are 555 Vascular Neurology Physician providers across 47 states in the US. The average Vascular Neurology Physician provider writes 378 Medicare Part D claims per year.
What drugs does WILLIAM CARROLL, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM CARROLL, MD's most frequently prescribed drugs include Topiramate, Levetiracetam, Aimovig Autoinjector. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM CARROLL, MD accept Medicare?
WILLIAM CARROLL, MD appears in CMS Medicare data with 1,878 Part D claims and 249 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM CARROLL, MD's credentials?
WILLIAM CARROLL, MD's NPI is 1669462446 with credentials MD. 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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