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

Mark A Stellingworth, MD

Individual provider Advanced Heart Failure and Transplant Cardiology Physician · NPI 1003000936

Mark A Stellingworth, MD is registered under Cardiovascular Disease (Cardiology) in Hartsville, South Carolina. Graduated from Louisiana State University School of Medicine in New Orleans in 2000, 26 years ago. Practices with Hartsville Medical Group LLC, a 68-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Louisiana and South Carolina.

Years since qualifying
26
Trained at
Louisiana State University School of Medicine in New Orleans
Licensed in
LA, SC
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

701 Medical Park Dr Ste 301
Hartsville, SC 29550-4779
Phone: (843) 383-5978
Fax: (843) 383-5977
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8 Richland Medical Park Dr, Columbia, SC 29203-8005 — (803) 434-3800

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 36377 (SC)
Advanced Heart Failure and Transplant Cardiology Physician Taxonomy 207RA0001X · Licence 36377 (SC)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 024969 (LA)

Record details

NPI number1003000936
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 4, 2007
Last updated in NPPESJune 13, 2022
Certification dateJune 13, 2022

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolLOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated 2000 (26 years in practice)
Group practice Hartsville Medical Group Llc — 68 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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.

Pacemaker insertion or repair 1–10 times

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.

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 patients853
Services billed 2,920 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Hartsville Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 68 clinicians in the practice; 12 are shown here.