NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark Neurology,LLC

Neurology Physician in Millsboro, DE · enumerated 2008 · authorized official Michael Mark, Owner.

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

National Provider Identifier

1114192077

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mark Neurology,LLC
Practice address 28467 Dupont Blvd, Suite 3a, Millsboro, DE, 19966
Phone (302) 933-0111
Fax (302) 933-0990
Enumeration date Apr 22, 2008
Last updated in NPPES Apr 9, 2013

Taxonomy & classification

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License C10003541 (DE) Primary

Authorized official

Name Michael Mark
Title Owner
Phone (302) 933-0111

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-04-09. Verify at npiregistry.cms.hhs.gov.
Where is Mark Neurology,LLC located?
The practice location on file with NPPES is in Millsboro, DE.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-09.