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Michael S Oholleran

Surgery Physician in Redwood City, CA · enumerated 2006.

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

National Provider Identifier

1003916321

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Registry record

Entity type Individual (Type 1)
Name Michael S Oholleran
Sex Male
Practice address 290 Redwood Shores Pkwy, Redwood City, CA, 94065
Phone (650) 853-2135
Enumeration date Sep 25, 2006
Last updated in NPPES Mar 22, 2016

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G394880 (CA) Primary

Other identifiers

Identifier Type State Issuer
00G394880 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 Michael Oholleran practice?
The practice location on file with NPPES is in Redwood City, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Oholleran?
The National Provider Identifier (NPI) for Michael Oholleran is 1003916321, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-22.