Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Russell Ling, M.D., PH.D.

Procedural Dermatology Physician in Newnan, GA · enumerated 2005.

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

National Provider Identifier

1639153638

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Registry record

Entity type Individual (Type 1)

Name Mark Russell Ling

Credential M.D., PH.D.

Sex Male

Practice address 710 Newnan Crossing Bypass, Suite A, Newnan, GA, 30263

Phone (770) 251-5111

Fax (770) 254-8680

Enumeration date Dec 2, 2005

Last updated in NPPES Mar 31, 2023

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 034647 (GA) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License 034647 (GA) 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
4279563008	Other	GA	CIGNA HMO
0390142	Other	GA	UHC
070012632	Other	GA	RAIL ROAD MEDICARE
2117569	Other	GA	AETNA HMO
00469246C	Medicaid	GA	-
4318069	Other	GA	AETNA NON-HMO

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

What specialty is Mark Ling?

Mark Ling is registered in NPPES with the primary taxonomy of Procedural Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Sandra Morris Physician Assistant · Newnan, GA NPI 1225012602 Elizabeth Baker-Ahlstrom Physician Assistant · Newnan, GA NPI 1114901519 Elise Davies Physician Assistant · Newnan, GA NPI 1548244544 Mark Holzberg Procedural Dermatology Physician · Newnan, GA NPI 1669456661 Steven Marcet MOHS-Micrographic Surgery Physician · Newnan, GA NPI 1255300976

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-31.