Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ganna V Oosting, M.D.

Hospitalist Physician in Two Rivers, WI · enumerated 2006 · practices at Aurora Health Care North, Inc..

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

National Provider Identifier

1861500886

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Registry record

Entity type Individual (Type 1)

Name Ganna V Oosting

Credential M.D.

Sex Female

Practice address 5000 Memorial Dr, Two Rivers, WI, 54241

Phone (920) 794-5000

Enumeration date Aug 29, 2006

Last updated in NPPES Mar 27, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 45000 (WI) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 45000 (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
34342900	Medicaid	WI	-
45000	Other	WI	TOUCHPOINT
390806395002	Other	WI	TRICARE
H79622	Other	WI	CIGNA

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 Ganna Oosting's NPI record?

Cross-check NPI 1861500886 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861500886 active?

Yes, as of the latest NPPES snapshot, NPI 1861500886 is active (record last updated 2024-03-27).

Other providers at this practice address

Browse all →

John Hamilton Certified Registered Nurse Anesthetist · Two Rivers, WI NPI 1689675845 Scott Harris Certified Registered Nurse Anesthetist · Two Rivers, WI NPI 1215912209 Nicholas Stephani Diagnostic Radiology Physician · Two Rivers, WI NPI 1114987203 Aurora Health Care North, Inc. General Acute Care Hospital · Two Rivers, WI NPI 1477508687 David Copp Surgery Physician · Two Rivers, WI NPI 1013947225 Emil Pajek Internal Medicine Physician · Two Rivers, WI NPI 1033140462 Mark Oleck Certified Registered Nurse Anesthetist · Two Rivers, WI NPI 1215947536 John Dusenbery Certified Registered Nurse Anesthetist · Two Rivers, WI NPI 1013022284

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-27.