Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark T Pollock, M.D.

Sleep Medicine (Internal Medicine) Physician in Decatur, GA · enumerated 2005.

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

National Provider Identifier

1659372415

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Registry record

Entity type Individual (Type 1)

Name Mark T Pollock

Credential M.D.

Sex Male

Practice address 2665 N Decatur Rd Ste 440, Decatur, GA, 30033

Phone (404) 501-7533

Fax (404) 501-7652

Enumeration date Aug 2, 2005

Last updated in NPPES Oct 26, 2024

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 032275 (GA) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 032275 (GA) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 32275 (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
00420175E	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1659372415 active?

Yes, as of the latest NPPES snapshot, NPI 1659372415 is active (record last updated 2024-10-26).

How do I verify Mark Pollock's NPI record?

Cross-check NPI 1659372415 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Avery Nathanson Sleep Medicine (Internal Medicine) Physician · Decatur, GA NPI 1679574198

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-26.