Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Gourdin McMaster Jr., MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1124345574

Dr. William Gourdin McMaster Jr., MD practises Thoracic Surgery in Columbia, South Carolina. Graduated from Medical University of South Carolina College of Medicine in 2010, 16 years ago. Practices with Prisma Health Medical Group-Midlands, a 1,018-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in South Carolina and Tennessee.

Years since qualifying
16
Trained at
Medical University of South Carolina College of Medicine
Licensed in
SC, TN
In the registry since
2010
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8 Richland Medical Park Dr Ste 400
Columbia, SC 29203-8004
Phone: (803) 795-0871
Fax: (803) 765-9214
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3601 The Vanderbilt Clinic, Nashville, TN 37232-4701 — (615) 322-3000

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 89449 (SC)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 50674 (TN)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (TN)

Record details

NPI number1124345574
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 26, 2010
Last updated in NPPESApril 13, 2023
Certification dateApril 13, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyTHORACIC SURGERY
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Prisma Health Medical Group-Midlands — 1018 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Coronary artery bypass graft (CABG) 29 times · 82nd percentile
Pacemaker insertion or repair 1–10 times
Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients64
Services billed 266 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,139 54 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Prisma Health Baptist Hospital · Columbia, SC
  • Prisma Health Baptist Parkridge Hospital · Columbia, SC
  • Prisma Health Richland Hospital Hospital · Columbia, SC

Colleagues at Prisma Health Medical Group-Midlands

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1018 clinicians in the practice; 12 are shown here.

Other providers in Columbia