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

Individual provider Surgery Physician · NPI 1982998100

Mark Leslie Witkowski, DO practises General Surgery in Murrells Inlet, South Carolina. Graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2011, 15 years ago. Practices with Georgetown Physician Associates, LLC, a 223-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
15
Trained at
Kansas City University of Med & Biosciences, College of Osteo Med
Licensed in
IA
In the registry since
2011
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4040 Highway 17 Ste 202
Murrells Inlet, SC 29576-5098
Phone: (843) 652-8390
Fax: (843) 652-8391
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 1014 Huger Dr, Georgetown, SC 29440-3322 — (843) 520-8780
  • 606 Black River Rd Ste 301, Georgetown, SC 29440-3304 — (843) 652-8390
  • 4040 Highway 17 Unit 104, Murrells Inlet, SC 29576-5098 — (843) 652-8390
  • 2200 Crow Ln Ste 303b, Myrtle Beach, SC 29577-1663 — (843) 520-8780

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence R9182 (IA)

Record details

NPI number1982998100
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 6, 2011
Last updated in NPPESDecember 3, 2025
Certification dateDecember 3, 2025

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolKANSAS CITY UNIVERSITY OF MED & BIOSCIENCES, COLLEGE OF OSTEO MED
Graduated 2011 (15 years in practice)
Group practice Georgetown Physician Associates, Llc — 223 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Hernia repair (minimally invasive) 42 times · 98th percentile
Colonoscopy 31 times · 54th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 19 times · 50th percentile
Hernia repair - groin (open) 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 patients400
Services billed 957 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $61 2 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.

Colleagues at Georgetown Physician Associates, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 223 clinicians in the practice; 12 are shown here.

Other providers in Murrells Inlet