Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark J. Eisen, M.D.

Q: What type of organization is Mark J. Eisen, M.D.?

Mark J. Eisen, M.D. is registered in NPPES as a Family Medicine Physician (its primary provider taxonomy).

Family Medicine Physician in Chapel Hill, NC · enumerated 2006 · authorized official Marcus Gillikin, Consultant.

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

National Provider Identifier

1255447967

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Registry record

Entity type Organization (Type 2)

Legal business name Mark J. Eisen, M.D.

Practice address 900 Martin Luther King Jr Blvd, Sutie A, Chapel Hill, NC, 27514

Phone (919) 967-3452

Fax (919) 932-5200

Enumeration date Aug 23, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25580 (NC) Primary

Authorized official

Name Marcus Gillikin

Title Consultant

Phone (252) 353-7162

Other identifiers

Identifier	Type	State	Issuer
8930263	Medicaid	NC	-

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

What type of organization is Mark J. Eisen, M.D.?

Mark J. Eisen, M.D. is registered in NPPES as a Family Medicine Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Kathy L Davies, DDS, Ms, PA Periodontics · Chapel Hill, NC NPI 1417163221 Dale Schusterman Dc Pllc Clinic/Center · Chapel Hill, NC NPI 1821280728

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.