NPI Portal NPI Lookup & Verification

Dr. Anthony Leary Mark, M.D.

Dr. Anthony Leary Mark is a Surgery Physician provider (Surgery) practicing in Washington, DC, registered in the NPPES registry with NPI 1629128947 since 2007. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1629128947
Entity type Individual (Type 1)
Name Dr. Anthony Leary Mark
Credential M.D.
Sex Male
Practice address Washington, DC, 20703
Phone 2027826542
Enumeration date 2007-01-11
Last updated in NPPES 2024-08-29

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
208600000X Surgery Physician Secondary 390200000X DC
208600000X Surgery Physician Primary 0101244571 VA

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

Copy-ready billing details
Provider: Anthony Mark, M.D.
NPI: 1629128947
Taxonomy: 208600000X (Surgery Physician)
Address: Washington, DC, 20703

Verify this record

Cross-check NPI 1629128947 against the authoritative CMS record: view Dr. Anthony Leary Mark on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

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.
What specialty is Anthony Mark?
Anthony Mark is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-08-29.