Individual provider · Type 1 NPI

Connor James O'Brien, MD

Hospitalist Physician · Orange, CA

NPI number 1457055964 Active

Practice location

101 The City Dr S Ste 400
Orange, CA 92868-3201

Call (714) 456-5691 Map

Mailing address

104 Preserve
Irvine, CA 92618-4804

Other practice locations

  • 400 N Mcdowell Blvd, Petaluma, CA 94954-2339 · (707) 303-1709

Specialties and licenses

TaxonomyCodeLicense
Hospitalist Physician Primary 208M00000XA198979 (CA)

Hospitalist Physician: Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

226 other providers at this address

Other hospitalist physician providers in Orange

See all in Orange →

About NPI 1457055964

Connor James O'Brien, MD's National Provider Identifier is 1457055964, issued on Mar 28, 2023. The primary taxonomy on file is Hospitalist Physician (208M00000X), and the practice location is in Orange, CA. The record was last updated on Sep 9, 2026.