Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark D Clark, FNP

Acute Care Nurse Practitioner in Gainesville, GA · enumerated 2005.

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

National Provider Identifier

1285631887

Verified

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Registry record

Entity type Individual (Type 1)

Name Mark D Clark

Credential FNP

Sex Male

Practice address 102 Barrett St, Gainesville, GA, 30501

Phone (770) 540-4274

Enumeration date Jun 29, 2005

Last updated in NPPES Feb 5, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN128712 (GA) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN128712 (GA) Secondary

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN128712 (GA) Secondary

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN128712 (GA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
1738523	Other	GA	WELLCARE
06423272	Other	GA	AMERIGROUP
615230572C	Medicaid	GA	-
615230572E	Medicaid	GA	-
615230572F	Medicaid	GA	-
615230572D	Medicaid	GA	-

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Clark?

Mark Clark is registered in NPPES with the primary taxonomy of Acute Care Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-05.