MARK JOSEPH SIEGEL M.D.
NPI 1437536463
Dermatology in Charleston, SC

Q: What is Mark Siegel's NPI number?

The NPI number for Mark Siegel is 1437536463. It was assigned to this individual provider in the NPPES registry on April 28, 2015.

Q: What is Mark Siegel's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Siegel was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 28, 2015PECOS EnrolledAccepts Medicare Assignment

169 ASHLEY AVE, ROOM 202 MAIN HOSPITAL MUSC333, CHARLESTON, SC 29425(843) 792-3876(843) 876-1435 Get Directions Write a Review

NPPES record last updated: August 12, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 12, 2025, Aug 17, 2022, Jul 5, 2018 (3 updates tracked since 2018).

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About Mark Joseph Siegel M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK JOSEPH SIEGEL M.D. (NPI 1437536463) is an individual dermatology provider in Charleston, South Carolina, licensed in South Carolina (38050) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Musc Medical Center, and maintains a secondary practice location in Mt Pleasant.

NPPES Registry Identity

NPI1437536463

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameMARK JOSEPH SIEGELCredential: M.D.

Location Address169 ASHLEY AVE, ROOM 202 MAIN HOSPITAL MUSC333Charleston, SC 29425

Mailing Address570 Long Point Rd Ste 200Mt Pleasant, SC 29464-7940 · (843) 881-0320 · Fax (843) 881-5453

Phone(843) 792-3876

Fax(843) 876-1435

Sole ProprietorNo

Medical School CMSUniv Of Central Florida, College Of MedicineGraduated 2015

Enumeration DateApril 28, 2015

Last NPPES UpdateAugust 12, 20253 updates tracked since enumeration

NPPES CertifiedAugust 12, 2025

✔ NPI 1437536463 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in SC · 38050

Definition

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

169 ASHLEY AVE, Charleston, SC 29425

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Secondary Practice Location 1

Location 1570 Long Point Rd Ste 200MT Pleasant, SC 29464-7940 · Phone (843) 881-0320 ext. 230 · Fax (843) 881-5453

Other Identifiers 2

Other38050SC · Medical License

Medicaid380509SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Joseph Siegel 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.

PECOS PAC ID6709196546

PECOS Enrollment IDI20181031003108

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mark Siegel reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Medical Associates

Same address

Pediatric Emergency Medicine

171 ASHLEY AVE
Charleston, SC 29425

Reassigned Medicare billing, South Carolina enrollment
Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
2,594 clinicians in this Medicare group

NPI 1548413453 (843) 792-1414

Mt Pleasant Dermatology

6.1 mi

Dermatology

570 LONG POINT ROAD, SUITE 200
Mt. Pleasant, SC 29464

Reassigned Medicare billing, South Carolina enrollment
8 clinicians in this Medicare group

NPI 1821048828 (843) 881-0320

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

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.

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

796 services118 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

183 services135 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

146 services118 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

128 services92 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

125 services95 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

92 services92 patients

Destruction of skin growth, 1-14 growths 17110

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

68 services59 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

61 services61 patients

Biopsy of related skin growth, each additional growth 11103

A biopsy of related skin growth is a procedure where a small piece of skin growth is removed for testing. If additional growths are identified, they may also be biopsied. This helps in diagnosing skin conditions and planning appropriate treatment.

42 services30 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

24 services22 patients

Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm 11301

This procedure involves the careful removal of a small skin growth on the body, arms, or legs. It's done by shaving off the growth that's 0.6-1.0 cm in size. It's a common, safe method to treat non-cancerous skin growths and improve skin appearance.

20 services17 patients

Destruction of precancer skin growth, 15 or more growths 17004

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

20 services13 patients

Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm 11603

This procedure involves the removal of a cancerous skin growth, between 2.1 and 3.0 cm, from the body, arms, or legs. The area is numbed, then the growth is carefully cut out. The goal is to eliminate all cancer cells while minimizing scarring.

19 services16 patients

Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm 13121

This is a procedure to repair a complex wound on your scalp, arm, or leg that is 2.6-7.5 cm long. It involves cleaning, removing damaged tissue, and stitching the wound to promote healing. It's performed under local or general anesthesia.

15 services15 patients

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm 13132

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size ranges from 2.6-7.5 cm. The process includes cleaning, removing damaged tissue, and stitching the wound for proper healing.

13 services12 patients

Complicated repair of wound of trunk, 2.6-7.5 cm 13101

This service involves the intricate repair of a wound on your body's main structure, between your neck and limbs. The wound measures 2.6-7.5 cm. The procedure includes deep-layer stitching and may involve repairing damaged tissue.

12 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Musc Medical Center

Acute Care Hospitals · Charleston, SC

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number420004

Location169 Ashley AveCharleston, SC 29425 · Charleston County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29425 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$83.18 typical visit price

range $53.57 – $163.84

Typical copayment $20.79 (range $13.39 – $40.96)

Most-billed visit code 99203

Established Patient

$67.12 typical visit price

range $16.96 – $133.52

Typical copayment $16.78 (range $4.24 – $33.38)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. BRUCE ALAN REEVES PT

Physical Therapist (Orthopedic)

169 ASHLEY AVE, ROOM, 3SW WING
CHARLESTON, SC 29425

Charleston County (843) 792-3481

KRISTINA CALAMIA

Health and Wellness Coach

169 ASHLEY AVE
CHARLESTON, SC 29425

Charleston County (843) 792-3881

EMILY MCGILL MD

Anesthesiology

169 ASHLEY AVE
CHARLESTON, SC 29425

Charleston County (843) 792-2185

PAIGE WOODHAM M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

169 ASHLEY AVE, ROOM 202 MAIN HOSPITAL MSC333
CHARLESTON, SC 29425

Charleston County (843) 792-1086

KATIE FLOWER M.D.

Surgery

169 ASHLEY AVE, ROOM 202 MAIN HOSPITAL
CHARLESTON, SC 29425

Charleston County (216) 385-5459

JENNIE HYEJIN KWON MD

Surgery

169 ASHLEY AVE
CHARLESTON, SC 29425

Charleston County (843) 792-3072

DR. BRIAN ELLIS JACOBS MD

Surgery

169 ASHLEY AVE
CHARLESTON, SC 29425

Charleston County (843) 792-1414

HANNAH ELIZABETH PRESSLER

Internal Medicine

169 ASHLEY AVE
CHARLESTON, SC 29425

Charleston County (843) 754-7275

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 Siegel's NPI number?

The NPI number for Mark Siegel is 1437536463. It was assigned to this individual provider in the NPPES registry on April 28, 2015.

Where is Mark Siegel located?

Mark Siegel practices at 169 Ashley Ave Room 202 Main Hospital Musc333, Charleston, SC 29425. The listed phone number is (843) 792-3876.

What is Mark Siegel's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Mark Siegel enrolled in Medicare?

Yes. Mark Siegel 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.

Which organizations bill Medicare for Mark Siegel's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Siegel reassigns Medicare benefits to 2 organizations: University Medical Associates (Charleston, SC) and Mt Pleasant Dermatology (Mt. Pleasant, SC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Siegel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Siegel accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and First Choice Next and 1 other insurer list Mark Siegel 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 Siegel affiliated with any hospitals?

According to CMS data, Mark Siegel is affiliated with Musc Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Siegel was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.