Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John H Ahn, DO

Gastroenterology Physician in Safety Harbor, FL · enumerated 2006.

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

National Provider Identifier

1598790701

Verified

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Registry record

Entity type Individual (Type 1)

Name John H Ahn

Credential DO

Sex Male

Practice address 1840 Mease Drive, Suite 305, Safety Harbor, FL, 34695

Phone (727) 796-4166

Fax (727) 669-5849

Enumeration date Jul 12, 2006

Last updated in NPPES May 12, 2021

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License OS7005 (FL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
281931	Other	-	AVMED
5676415	Other	-	AETNA
57158	Other	-	BCBS
1136014	Other	-	FIRST HEALTH
4775800	Other	-	CIGNA
300384100	Medicaid	FL	-

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 John Ahn?

John Ahn is registered in NPPES with the primary taxonomy of Gastroenterology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-12.