Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John E. Stone, MD

Gastroenterology Physician in Oak Creek, WI · enumerated 2006.

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

National Provider Identifier

1306813761

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Registry record

Entity type Individual (Type 1)

Name John E. Stone

Credential MD

Sex Male

Practice address 7901 S 6th St, Oak Creek, WI, 53154

Phone (414) 346-8000

Fax (414) 346-8010

Enumeration date Mar 3, 2006

Last updated in NPPES Feb 7, 2019

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 23879 (WI) 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
30599300	Medicaid	WI	-
1306813761	Medicaid	WI	-

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 Stone?

John Stone 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 2019-02-07.