Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Vincent Alexander, M.D.

Otolaryngology Physician in Washington, DC · enumerated 2006.

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

National Provider Identifier

1386733970

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Vincent Alexander

Credential M.D.

Sex Male

Practice address Veterans Affairs Medical Ctr Wash Dc Surgery Dept, 50 Irving Street N.W., Washington, DC, 20422

Phone (202) 745-8295

Fax (202) 745-8293

Enumeration date Oct 12, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License MD8523 (DC) Primary

207YX0007X Plastic Surgery within the Head & Neck (Otolaryngology) Physician Allopathic & Osteopathic Physicians · License MD8523 (DC) 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

How do I verify Mark Alexander's NPI record?

Cross-check NPI 1386733970 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1386733970 active?

Yes, as of the latest NPPES snapshot, NPI 1386733970 is active (record last updated 2025-09-11).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.