MARK LOUIS WESS M.D.
NPI 1861440042
Internal Medicine in Greenville, SC
About Mark Louis Wess M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK LOUIS WESS M.D. (NPI 1861440042) is an individual internal medicine provider in Greenville, South Carolina, licensed in South Carolina (35155) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Prisma Health Baptist Easley Hospital, and is a graduate of University Of Cincinnati College Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark Louis Wess M.d. 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Prisma Health Baptist Easley Hospital
Acute Care Hospitals · Easley, SCSt Francis-Downtown
Acute Care Hospitals · Greenville, SCPrisma Health Greenville Memorial Hospital
Acute Care Hospitals · Greenville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29611 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mark Wess's NPI number?
The NPI number for Mark Wess is 1861440042. It was assigned to this individual provider in the NPPES registry on May 4, 2006.
Where is Mark Wess located?
Mark Wess practices at 3516 Highway 153, Greenville, SC 29611. The listed phone number is (864) 729-6626.
What is Mark Wess's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Wess enrolled in Medicare?
Yes. Mark Wess 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.
What insurance does Mark Wess accept?
Health plans from AvMed list Mark Wess 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 Mark Wess affiliated with any hospitals?
According to CMS data, Mark Wess is affiliated with Prisma Health Baptist Easley Hospital, St Francis-Downtown and Prisma Health Greenville Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Mark Wess was last updated on March 25, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
