Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jacqueline Jennifer O'Neill, MD

Hospitalist Physician in Orange, CA · enumerated 2018.

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

National Provider Identifier

1588153886

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Jacqueline Jennifer O'Neill

Credential MD

Sex Female

Practice address 101 the City Dr S, Orange, CA, 92868

Phone (714) 456-7890

Enumeration date May 2, 2018

Last updated in NPPES Sep 16, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD2021-0682 (NM) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 61778 (AZ) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD2021-0682 (NM) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A202837 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Jacqueline O'Neill's NPI record?

Cross-check NPI 1588153886 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1588153886 active?

Yes, as of the latest NPPES snapshot, NPI 1588153886 is active (record last updated 2025-09-16).

Other providers at this practice address

Browse all →

Amir Seifi Medical Physician Assistant · Orange, CA NPI 1548263015 Melvin Seard Urology Physician · Orange, CA NPI 1538163126 Charles Rosen Orthopaedic Surgery of the Spine Physician · Orange, CA NPI 1548264013 Joseph Ruggio Cardiovascular Disease Physician · Orange, CA NPI 1124023163 Kurt Richards Surgical Physician Assistant · Orange, CA NPI 1598760092 Akash Joshi Body Imaging Physician · Orange, CA NPI 1013913490 Arti Gupta Body Imaging Physician · Orange, CA NPI 1770589152 Lucia Webster Certified Registered Nurse Anesthetist · Orange, CA NPI 1073510590

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-16.