Mark Joseph Siegel, M.D.
Dermatology Physician · Charleston, SC
Mark Joseph Siegel, M.D. is a dermatology physician with a practice address in Charleston, South Carolina, and NPI 1437536463, issued on Apr 28, 2015. Check the license (South Carolina 38050, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Joseph Siegel
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 38050 SC
Self-reported in NPPES; status is on the state search - Practice location
- 169 Ashley Ave, Charleston, SC 29425
- Phone
- (843) 792-3876
- Enumerated
- Apr 28, 2015
- Record last updated
- Aug 12, 2025
- Fax
- (843) 876-1435
- Medicaid ID
- 380509 SC
- Medicare enrollment
- Enrolled (PECOS I20181031003108); accepts Medicare assignment
- Medical or professional school
- Univ Of Central Florida, College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 217 in South Carolina → Look up another NPI →
Also registered at 169 Ashley Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Joseph Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 38050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average dermatology physician in 2024
322 Medicare Part D claims for 138 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Mupirocin39 claims
- Triamcinolone Acetonide39 claims
- Ketoconazole35 claims
- Clobetasol Propionate33 claims
- Doxycycline Hyclate19 claims
- Hydrocortisone19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $25,069.61
119 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Mt Pleasant DermatologyMount Pleasant, SC
- University Medical Associates OF The Medical University OF South CarolCharleston, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Joseph Siegel among 217 dermatology physician records in South Carolina
Mark Joseph Siegel, M.D. is one of 217 dermatology physician records with a practice address in South Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 71% of them.
- NPI issued2015 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2015 · median 2008 among the 153 with a school on file
- Record last updated2025 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in South Carolina
There are 217 dermatology physician records in South Carolina.
All 217 in South Carolina → Every provider in Charleston → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Diana Antonovich, MDCharleston, SC 294251427093657
- Graciela De Jesus, MDCharleston, SC 294251659577518
- Dirk Elston, MDCharleston, SC 294251669449161
- Mackenzie Gwynne, M.D.Charleston, SC 294251780079665
- Benjamin Kuo, M.D.Charleston, SC 294251043419880
- Pearon Lang, MDCharleston, SC 294251104854314
- Anne Leclercq, M.D.Charleston, SC 294251649350976
- Richard Marchell, MDCharleston, SC 294251487682779
Common questions
What is Mark Joseph Siegel, M.D.'s NPI number?
Mark Joseph Siegel, M.D.'s National Provider Identifier (NPI) is 1437536463, issued on Apr 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark Joseph Siegel, M.D. located?
The NPPES record lists a practice address at 169 Ashley Ave, Charleston, SC, 29425. Phone: (843) 792-3876. Providers update this record themselves, so call before visiting.
How can I verify Mark Joseph Siegel, M.D.'s license?
NPPES lists South Carolina license number 38050, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Joseph Siegel, M.D. prescribe under Medicare Part D?
In 2024, Mark Joseph Siegel, M.D. had 322 Medicare Part D claims for 138 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.