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

Mark Joseph Siegel, MD

Individual provider Dermatology Physician · NPI 1437536463

Mark Joseph Siegel, MD practises Dermatology in Charleston, South Carolina. Graduated from Univ of Central Florida, College of Medicine in 2015, 11 years ago. Practices with University Medical Associates of the Medical University of South Carol, a 1,640-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
11
Trained at
Univ of Central Florida, College of Medicine
Licensed in
SC
In the registry since
2015
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

169 Ashley Ave Rm 202 Main Hospital MUSC333
Charleston, SC 29425
Phone: (843) 792-3876
Fax: (843) 876-1435
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 570 Long Point Rd Ste 200, Mt Pleasant, SC 29464-7940 — (843) 881-0320

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 38050 (SC)

Record details

NPI number1437536463
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 28, 2015
Last updated in NPPESAugust 12, 2025
Certification dateAugust 12, 2025

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolUNIV OF CENTRAL FLORIDA, COLLEGE OF MEDICINE
Graduated 2015 (11 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
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.

Melanoma (skin cancer) excision 102 times · 93rd percentile
Removal of skin lesions 641 times · 89th percentile
Skin biopsy 232 times · 87th percentile
Removal or shaving of skin growth 49 times · 79th 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.

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 patients297
Services billed 1,962 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.

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.

Consulting Fee $40,461 11 payments
Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $29,254 8 payments
Travel and Lodging $12,229 30 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $5,415 112 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