Dr. O'Brien is on Doximity
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Office
20100 Lake Chabot Rd
Ste 3
Castro Valley, CA 94546Phone+1 510-581-7677Fax+1 510-581-7678
Education & Training
Providence Little Company of Mary Medical Center San PedroResidency, Family Medicine, 1987 - 1989
University of California (Irvine)Internship, Internal Medicine, 1986 - 1987
Boston University School of MedicineClass of 1986
Certifications & Licensure
CA State Medical License 1987 - 2023
TX State Medical License 1969 - 2017
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification Practice Fusion EHR, Practice Fusion, Inc., 2013
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