Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Davis Mackay, M.D.

Gastroenterology Physician in Vero Beach, FL · enumerated 2006.

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

National Provider Identifier

1346277613

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Registry record

Entity type Individual (Type 1)

Name Gregory Davis Mackay

Credential M.D.

Sex Male

Practice address 3745 11th Cir, Suite 101, Vero Beach, FL, 32960

Phone (772) 299-3211

Fax (772) 299-3517

Enumeration date Jun 26, 2006

Last updated in NPPES Jan 22, 2018

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License ME 60347 (FL) 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
12603	Other	FL	BLUE CROSS
O55359000	Medicaid	FL	-
100015007	Other	FL	RR MEDICARE

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 NPI 1346277613 active?

Yes, as of the latest NPPES snapshot, NPI 1346277613 is active (record last updated 2018-01-22).

How do I verify Gregory Mackay's NPI record?

Cross-check NPI 1346277613 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-22.