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Walnut Creek Medical Group

Family Medicine Physician in Walnut Creek, CA · enumerated 2005 · authorized official Maeve O'Regan, Partner.

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

National Provider Identifier

1871582155

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Registry record

Entity type Organization (Type 2)
Legal business name Walnut Creek Medical Group
Practice address 2621 Shadelands Drive, Walnut Creek, CA, 94598
Phone (925) 947-0417
Fax (925) 947-4379
Enumeration date Oct 19, 2005
Last updated in NPPES Dec 30, 2015

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G42383 (CA) Primary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A42969 (CA) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G370050 (CA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A55743 (CA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A50662 (CA) Secondary

Authorized official

Name Maeve O'Regan
Title Partner
Phone (925) 947-0417

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2015-12-30. Verify at npiregistry.cms.hhs.gov.
Where is Walnut Creek Medical Group located?
The practice location on file with NPPES is in Walnut Creek, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-30.