Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark A Giarrizzi, PAC

Physician Assistant in Rock Hill, SC · enumerated 2006.

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

National Provider Identifier

1376558007

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark A Giarrizzi

Credential PAC

Sex Male

Practice address 760 Addison Ave, Rock Hill, SC, 29730

Phone (803) 329-1930

Fax (803) 328-2549

Enumeration date Jul 30, 2006

Last updated in NPPES Oct 26, 2007

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1098 (SC) Primary

Other identifiers

Identifier	Type	State	Issuer
0433PA	Medicaid	SC	-

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 1376558007 active?

Yes, as of the latest NPPES snapshot, NPI 1376558007 is active (record last updated 2007-10-26).

How do I verify Mark Giarrizzi's NPI record?

Cross-check NPI 1376558007 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-26.