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

Marissa Anne Mayor, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1669738597

Marissa Anne Mayor, MD practises Thoracic Surgery in Charleston, South Carolina. Graduated from Boston University School of Medicine in 2012, 14 years ago. Practices with University Medical Associates of the Medical University of South Carol, a 1,640-clinician group, accepts Medicare assignment and offers telehealth. Licensed in South Carolina.

Years since qualifying
14
Trained at
Boston University School of Medicine
Licensed in
SC
In the registry since
2012
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

30 Courtenay Drive Msc 613
Charleston, SC 29425-3821
Phone: (843) 792-1414
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence MMD.94651 (SC)
Surgery Physician Taxonomy 208600000X · Licence MMD.94651 (SC)

Record details

NPI number1669738597
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2012
Last updated in NPPESSeptember 19, 2025
Certification dateSeptember 19, 2025

Medicare enrollment

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

Medicare specialtyTHORACIC SURGERY
Also practisesGENERAL SURGERY
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice University Medical Associates Of The Medical University Of South Carol — 1640 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Upper gastrointestinal (GI) endoscopy for acid reflux 12 times · 44th percentile

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.

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 $1,078 13 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.

  • Musc Medical Center Hospital · Charleston, SC

Colleagues at University Medical Associates of the Medical University of South Carol

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1640 clinicians in the practice; 12 are shown here.

Other providers in Charleston