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Dr. William S. Arnold, MD

Cardiology (Cardiovascular Disease Physician)

At a glance

In the NPI registry since
2005

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Cardiovascular Disease Physician primary
    GA license 020400

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Cardiology per capita by county →

Medicare patients and services

Most frequent Medicare services, 2023
ServiceTimesPatients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only1,8511,341
Established patient office or other outpatient visit, 30-39 minutes550403
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report485444
Insertion of needle into vein for collection of blood sample7974
Blood test, clotting time5426
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician2424
New patient office or other outpatient visit, 45-59 minutes1717
New patient office or other outpatient visit, 30-44 minutes1111

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Cardiology clinicians in Atlanta

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 9, 2010), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1295734820. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.