MARISSA ANNE MAYOR MD
NPI 1669738597
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Charleston, SC
About Marissa Anne Mayor Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA ANNE MAYOR MD (NPI 1669738597) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Charleston, South Carolina, licensed in South Carolina (MMD.94651) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Musc Medical Center, and is a graduate of Boston University School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marissa Anne Mayor Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Marissa Mayor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Charleston, SC 29425
- Reassigned Medicare billing, South Carolina enrollment
- 2,594 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Musc Medical Center
Acute Care Hospitals · Charleston, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29425 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHARLESTON, SC 29425
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Marissa Mayor's NPI number?
The NPI number for Marissa Mayor is 1669738597. It was assigned to this individual provider in the NPPES registry on April 4, 2012.
Where is Marissa Mayor located?
Marissa Mayor practices at 30 Courtenay Drive Msc 613, Charleston, SC 29425. The listed phone number is (843) 792-1414.
What is Marissa Mayor's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Marissa Mayor enrolled in Medicare?
Yes. Marissa Mayor is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Marissa Mayor's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Mayor reassigns Medicare benefits to University Medical Associates Of The Medical University Of South Carol (Charleston, SC). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marissa Mayor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marissa Mayor accept?
Health plans from BlueCross BlueShield of South Carolina and First Choice Next list Marissa Mayor as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Marissa Mayor affiliated with any hospitals?
According to CMS data, Marissa Mayor is affiliated with Musc Medical Center.
When was this NPI record last updated?
The NPPES record for Marissa Mayor was last updated on September 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Marissa Anne Mayor, MD · NPI 1669738597
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in Charleston, South Carolina. Individual provider, active in the CMS NPPES registry since April 4, 2012.
## Identity
- **NPI:** 1669738597 (Entity type: Individual)
- **Enumerated:** April 4, 2012
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** MMD.94651 (South Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 30 COURTENAY DRIVE MSC 613, Charleston, SC 29425-3821
- **Phone:** (843) 792-1414
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Medical Associates Of The Medical University Of South Carol (NPI 1013934629, Charleston, SC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** September 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1669738597) · Data from the CMS NPPES public registry.