Dr. Timothy Oneill is a cardiologist specializing in the diagnosis, treatment & management of heart conditions in patients near Los Alamitos, CA.
We invite you to write a review about your experience with Dr. Oneill.
3771 Katella Avenue, Suite 300, Los Alamitos, CA 90720-3115
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NOTE: Please contact the doctor’s office to confirm your coverage before making an appointment.
Please Note: The information displayed below is sourced from the 2014 Medicare Physician and Other Supplier National Provider Identifier (NPI) Aggregate Report. It's important to remember that the statistics below are not inclusive of all patients treated by Dr. Oneill, but only those who participate in Medicare.