NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Sam Mark, D.P.M.

Podiatrist in Alexandria, VA · enumerated 2017 · practices at Loudoun Medical Group, PC.

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

National Provider Identifier

1770014193

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Sam Mark
Credential D.P.M.
Sex Male
Practice address Alexandria, VA, 22304
Phone (703) 578-4161
Enumeration date Mar 27, 2017
Last updated in NPPES Oct 2, 2023

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

Taxonomy & licenses

213E00000X Podiatrist Podiatric Medicine & Surgery Service Providers · License 0103301337 (VA) Primary
DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier Type State Issuer
30015750040001 Medicaid VA -
1770014193 Medicaid VA -

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 → Validate an NPI →

Frequently asked questions

Is NPI 1770014193 active?
Yes, as of the latest NPPES snapshot, NPI 1770014193 is active (record last updated 2023-10-02).
How do I verify Sam Mark's NPI record?
Cross-check NPI 1770014193 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-02.