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

William Reece McWilliams, MD

Individual provider Internal Medicine Physician · NPI 1346535127

William Reece McWilliams, MD is a Hospitalist in Columbia, South Carolina. Graduated from University of South Carolina School of Medicine in 2011, 15 years ago. Practices with Prisma Health Medical Group-Midlands, a 1,018-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
15
Trained at
University of South Carolina School of Medicine
Licensed in
SC
In the registry since
2011
Specialties on file
2
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

14 Richland Medical Park Dr Ste 320
Columbia, SC 29203-6877
Phone: (803) 434-6771
Fax: (803) 434-3955
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 33545 (SC)
Internal Medicine Physician Taxonomy 207R00000X · Licence LL33545 (SC)

Record details

NPI number1346535127
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 9, 2011
Last updated in NPPESFebruary 18, 2026
Certification dateFebruary 18, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolUNIVERSITY OF SOUTH CAROLINA SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Prisma Health Medical Group-Midlands — 1018 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients421
Services billed 876 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Prisma Health Hospice Midlands Hospice · Columbia, SC · listed as Prisma Health-Midlands
  • Prisma Health Baptist Hospital · Columbia, SC
  • Prisma Health Baptist Parkridge Hospital · Columbia, SC
  • Prisma Health Richland Hospital Hospital · Columbia, SC
  • Amedisys Home Health Of Lexington Home health agency · Lexington, SC
  • Prisma Health Homecare Home health agency · 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