A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. William O'Riordan:
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Specialties & Research
Dr. William O'Riordan, MD is board certified in Emergency Medicine.
Education & Awards
Dr. O'Riordan graduated from University of Kansas , Kansas City.
Dr. O'Riordan has 6 hospital affiliations:
- Sharp Memorial Hospital
- Sharp Mary Birch Hospital for Women
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- Additional Information
- Dr. William Dabney O'Riordan MD is a male Emergency Medicine Specialist, has 46 years of experience and practices in Emergency Medicine.
- Where does Dr. William D. O'Riordan practice?
- Dr. William O'Riordan has 1 office location.
Dr. William O'Riordan practices Emergency Medicine near National City, CA.
See National City Emergency Physicians.