Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leigh I.G. Iverson, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Oakland, CA · enumerated 2006.

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

National Provider Identifier

1871685867

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Registry record

Entity type Individual (Type 1)

Name Dr. Leigh I.G. Iverson

Credential M.D.

Sex Male

Practice address 3300 Webster St, Suite 500, Oakland, CA, 94609

Phone (510) 465-6600

Fax (510) 839-0806

Enumeration date Sep 28, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License G14929 (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
00G149290	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

Where does Leigh Iverson practice?

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

What is the NPI number for Leigh Iverson?

The National Provider Identifier (NPI) for Leigh Iverson is 1871685867, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.