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Dr. David T. Williams, MD

Vascular Surgery (Vascular Surgery Physician)

  • Medicare participating

At a glance

Years since graduation
19
In the NPI registry since
2007
Medicare patients seen, 2024
599

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

  • 2007Medical school: University of Louisville School of Medicine
  • 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

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

  • Vascular Surgery Physician primary
    SC license 37311

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

Map: Vascular Surgery per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
599
Services billed
1,589
Patients’ average age
76
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes355211
Ultrasound of both sides of head and neck blood flow256215
Ultrasound study of arm and leg arteries206170
Ultrasound of leg arteries or artery grafts189160
New patient office or other outpatient visit, 45-59 minutes9898
Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts6858
Ultrasound of abdomen and pelvis artery and vein blood flow5649
Ultrasound study of arm or leg veins with compression and maneuvers2424
Review by radiologist of arm or leg artery image2421
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes2222

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

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Oxycodone-Acetaminophen (oxycodone hcl/acetaminophen)
Other prescribers in Greenville, SC
35

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

Payments from drug and device companies

In 2025, 16 companies reported 46 payments worth $1,526 in total to this clinician.

By company
W. L. Gore & Associates, Inc.$717
Organogenesis Inc.$252
Atricure, Inc.$102
Artivion, Inc.$82.18
Smith+nephew, Inc.$58.67
Cook Medical LLC$52.57
Cordis US Corp.$51.61
Lemaitre Vascular, Inc.$39.49
By type
Food and Beverage$1,526

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in South Carolina →

Other Vascular Surgery clinicians in Greenville

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 17, 2017), 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 1962609347. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.