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Mark A. Porter, M.D.

Neurology Physician in Rock Hill, SC · enumerated 2005.

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

National Provider Identifier

1346232634

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Registry record

Entity type Individual (Type 1)
Name Mark A. Porter
Credential M.D.
Sex Male
Practice address 200 S Herlong Ave, Suite H, Rock Hill, SC, 29732
Phone (803) 366-6135
Fax (803) 366-3439
Enumeration date Aug 22, 2005
Last updated in NPPES Oct 30, 2007

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 22500 (SC) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
PA8722 Medicaid SC -
7902900 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.

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Frequently asked questions

How do I verify Mark Porter's NPI record?
Cross-check NPI 1346232634 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1346232634 active?
Yes, as of the latest NPPES snapshot, NPI 1346232634 is active (record last updated 2007-10-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-30.