Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sebastian Salvatore Demarco, M.D.

MOHS-Micrographic Surgery Physician in Alexandria, VA · enumerated 2015 · practices at Advanced Dermatology of Virginia Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1063807980

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Registry record

Entity type Individual (Type 1)

Name Sebastian Salvatore Demarco

Credential M.D.

Sex Male

Practice address 4660 Kenmore Ave Ste 1100, Alexandria, VA, 22304

Phone (703) 370-0073

Enumeration date Mar 30, 2015

Last updated in NPPES Mar 27, 2026

Taxonomy & licenses

207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License D0098057 (MD) Primary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License D0098057 (MD) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 289340 (NY) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is Sebastian Demarco?

Sebastian Demarco is registered in NPPES with the primary taxonomy of MOHS-Micrographic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-27.