Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Maribeth Porter Williams, MD

Individual provider Family Medicine Physician · NPI 1487965265

Maribeth Porter Williams, MD is registered under Family Practice in Greer, South Carolina. Graduated from University of Mississippi School of Medicine in 2010, 16 years ago. Practices with Prisma Health University Medical Group, a 2,446-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida and South Carolina.

Years since qualifying
16
Trained at
University of Mississippi School of Medicine
Licensed in
FL, SC
In the registry since
2010
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

109 Physicians Dr Ste A
Greer, SC 29650-2446
Phone: (864) 797-9150
Fax: (864) 797-9155
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1600 Sw Archer Rd, Gainesville, FL 32610-3003 — (352) 273-5159

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 32897 (SC)
Family Medicine Physician Taxonomy 207Q00000X · Licence ME124959 (FL)

Record details

NPI number1487965265
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2010
Last updated in NPPESMay 12, 2025
Certification dateMay 12, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Prisma Health University Medical Group — 2446 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 patients274
Services billed 862 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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 $26 1 payment · 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. Those with a page here are linked.

Colleagues at Prisma Health University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2446 clinicians in the practice; 12 are shown here.

Other providers in Greer