Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Connor O'Neill, DO

Hospitalist Physician in Milwaukee, WI · enumerated 2023.

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

National Provider Identifier

1952005514

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Connor O'Neill

Credential DO

Sex Male

Practice address 9200 W Wisconsin Ave, Milwaukee, WI, 53226

Phone (414) 955-0350

Fax (414) 955-0094

Enumeration date Mar 28, 2023

Last updated in NPPES Jul 30, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 81889-021 (WI) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 81889-021 (WI) 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
1952005514	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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Connor O'Neill's NPI record?

Cross-check NPI 1952005514 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1952005514 active?

Yes, as of the latest NPPES snapshot, NPI 1952005514 is active (record last updated 2026-07-30).

Other providers at this practice address

Browse all →

Anthony De Franco Cardiovascular Disease Physician · Milwaukee, WI NPI 1215930391 Froedtert Memorial Lutheran Hospital, Inc. General Acute Care Hospital · Milwaukee, WI NPI 1255334173 John Nettrour Orthopaedic Surgery Physician · Milwaukee, WI NPI 1457355810 Melissa Anglin Anesthesiology Physician · Milwaukee, WI NPI 1174522130 Wisconsin Diagnostic Laboratories LLC Clinical Medical Laboratory · Milwaukee, WI NPI 1932109675 Hakki Bolukoglu Cardiovascular Disease Physician · Milwaukee, WI NPI 1356341176 Susan Skaros Medical Physician Assistant · Milwaukee, WI NPI 1699775262 Gary Scherr Anatomic Pathology & Clinical Pathology Physician · Milwaukee, WI NPI 1083614341

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-30.