Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John E Carroll Jr., MD

Endocrinology, Diabetes & Metabolism Physician in Wausau, WI · enumerated 2006.

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

National Provider Identifier

1114935400

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Registry record

Entity type Individual (Type 1)

Name John E Carroll Jr.

Credential MD

Sex Male

Practice address 2720 Plaza Dr, Suite 1400, Wausau, WI, 54401

Phone (715) 847-2004

Enumeration date Aug 3, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 19661 (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
30260800	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

How do I verify John Carroll's NPI record?

Cross-check NPI 1114935400 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1114935400 active?

Yes, as of the latest NPPES snapshot, NPI 1114935400 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.