2026 NPPES data Clinical Cardiac Electrophysiology Physician NPI 1144338161 MD
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WILLIAM SMITH, MD

Clinical Cardiac Electrophysiology Physician in WILMINGTON, North Carolina. 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
3K
Medicare Part D claims · 630 beneficiaries · Clinical Cardiac Electrophysiology Physician avg: 2K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$4.5K
95 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

WILLIAM SMITH, MD filed 3,187 Medicare Part D claims in 2023 as a Clinical Cardiac Electrophysiology Physician in WILMINGTON, North Carolina, prescribing 81% generic.

3K
Part D claims, 2023
81%
generic prescribing
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 SMITH, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

3,187 Top 11% higher than 89% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic — not verified)

WILLIAM SMITH, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about WILLIAM SMITH, MD?

Quality data not reported

NPI registry status

Active

Issued 08/29/2006

NPI 1144338161

Primary specialty

Clinical Cardiac Electrophysiology Physician

Niche

1,570 US NPIs in this specialty

Medicare Part D claims

3,187 100% vs specialty avg

2023 prescription claims

Specialty avg: 1,596

Specialty distribution in North Carolina

How Clinical Cardiac Electrophysiology Physician compares to other specialties among North Carolina providers

North Carolina providers

Clinical Cardiac Electrophysiology Physician share within North Carolina

1. Clinical Cardiac Electrophysiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Cardiac Electrophysiology Physician share within North Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Cardiac Electrophysiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Cardiac Electrophysiology Physician ABMS/AOA estimate

Est. board-certified rate (Clinical Cardiac Electrophysiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Cardiac Electrophysiology Physician) — ABMS / AOA estimate

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 SMITH, MD appears in the CMS NPPES registry as a Clinical Cardiac Electrophysiology Physician provider holding MD credentials at 1500 PHYSICIANS DR, WILMINGTON, NC, 28401, with a listed phone of (910) 662-9500. NPI 1144338161 was issued on 08/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SMITH 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 3,187 prescription claims written by this provider, covering 630 Medicare beneficiaries and totaling roughly $740K in drug spend, split 19% brand-name and 81% generic by claim count. 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.

Clinical Cardiac Electrophysiology Physician is a narrow specialty nationwide, with 1,570 enrolled providers across 52 states and an average of 1,596 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

1500 PHYSICIANS DR
WILMINGTON, NC 28401

Provider Details

NPI 1144338161
Specialty Clinical Cardiac Electrophysiology Physician
Credentials MD
Gender Male
NPI Issued 08/29/2006

Hospital and facility affiliations

Facilities where WILLIAM SMITH, MD 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.

NOVANT HEALTH MEDICAL GROUP COASTAL REGION LLC
WILMINGTON, NC
NOVANT HEALTH NEW HANOVER REGIONAL MEDICAL CENTER LLC
WILMINGTON, NC
PENDER MEMORIAL HOSPITAL INCORPORATED
BURGAW, NC

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 WILLIAM SMITH, MD. Source: openpaymentsdata.cms.gov.

Total received

$4.5K

Largest payer

Boston Scientific Corporation

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

WILLIAM SMITH, MD — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 3,187 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.

3,187
Total Claims
$740K
Total Drug Cost
630
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,954
Total Day Supply
236,412
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$653K
Generic Drug Cost
$87K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.49
Gender Split
44% female / 56% male
Age Distribution
<65: 24, 65-74: 237, 75-84: 285, 85+: 84

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM SMITH, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Metoprolol Succinate
482
Eliquis
Apixaban
411
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
198
Metoprolol Tartrate
182
Sotalol
Sotalol Hcl
151
Amiodarone Hcl
135
Carvedilol
127
Flecainide Acetate
126
Furosemide
119
Amlodipine Besylate
114

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

Clinical Cardiac Electrophysiology Physician Overview

How WILLIAM SMITH, MD fits within the Clinical Cardiac Electrophysiology Physician landscape nationally.

1,570
Clinical Cardiac Electrophysiology Physician Providers in US
52
States with Clinical Cardiac Electrophysiology Physician
1,596
Avg Claims per Provider

WILLIAM SMITH, MD's 3,187 claims are above the specialty average of 1,596.

Nearby Clinical Cardiac Electrophysiology Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as SMITH.

Compare Clinical Cardiac Electrophysiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM SMITH, MD's specialty?
WILLIAM SMITH, MD specializes in Clinical Cardiac Electrophysiology Physician and practices in WILMINGTON, North Carolina. Credentials: MD.
How much does WILLIAM SMITH, MD prescribe under Medicare Part D?
In 2023, WILLIAM SMITH, MD wrote 3,187 Medicare Part D claims totaling $740K in drug costs for 630 beneficiaries.
Where is WILLIAM SMITH, MD located?
WILLIAM SMITH, MD is located at 1500 PHYSICIANS DR, WILMINGTON, NC, 28401. Phone: (910) 662-9500.
What is WILLIAM SMITH, MD's NPI number?
WILLIAM SMITH, MD's National Provider Identifier (NPI) is 1144338161, issued on 08/29/2006.
Does WILLIAM SMITH, MD prescribe more brand-name or generic drugs?
WILLIAM SMITH, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $653K in brand drug costs.
How many Clinical Cardiac Electrophysiology Physician providers are there in the US?
There are 1,570 Clinical Cardiac Electrophysiology Physician providers across 52 states in the US. The average Clinical Cardiac Electrophysiology Physician provider writes 1,596 Medicare Part D claims per year.
What drugs does WILLIAM SMITH, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM SMITH, MD's most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Diltiazem 24hr Er (Cd). This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM SMITH, MD accept Medicare?
WILLIAM SMITH, MD appears in CMS Medicare data with 3,187 Part D claims and 630 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM SMITH, MD's credentials?
WILLIAM SMITH, MD's NPI is 1144338161 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.
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