Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Padraig G Oneill, MD

Clinical Cardiac Electrophysiology Physician in Sacramento, CA · enumerated 2006.

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

National Provider Identifier

1629140702

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Registry record

Entity type Individual (Type 1)

Name Padraig G Oneill

Credential MD

Sex Male

Practice address 3941 J Street, Suite 260, Sacramento, CA, 95819

Phone (916) 736-2323

Fax (916) 736-0620

Enumeration date Nov 14, 2006

Last updated in NPPES May 21, 2014

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License A47764 (CA) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License A47764 (CA) Secondary

207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License A47764 (CA) Secondary

207RC0001X Clinical Cardiac Electrophysiology Physician Allopathic & Osteopathic Physicians · License A47764 (CA) 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
ZZZ47673Z	Other	CA	BLUE SHIELD
060035090	Other	CA	RAILROAD MEDICARE
GR0068232	Medicaid	CA	-
GR006823B	Medicaid	CA	-
GR0068231	Medicaid	CA	-
ZZZ47675Z	Other	CA	BLUE SHIELD
ZZZ62306Z	Other	CA	BLUE SHIELD
ZZZ47676Z	Other	CA	BLUE SHIELD
00A477640	Medicaid	CA	-
GR0068230	Medicaid	CA	-
GR0068233	Medicaid	CA	-
GR0068235	Medicaid	CA	-

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

What is the NPI number for Padraig Oneill?

The National Provider Identifier (NPI) for Padraig Oneill is 1629140702, a Type 1 (individual) record in the CMS NPPES registry.

Where does Padraig Oneill practice?

The practice location on file with NPPES is in Sacramento, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-21.