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. Daniel O'Brien:
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The overall average patient rating of Dr. Daniel O'Brien is Excellent.
Education & Awards
Dr. O'Brien graduated from University of Illinois at Chicago.
Dr. O'Brien has 4 hospital affiliations:
- Methodist Medical Center Of Illinois
- Mason District Hospital
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- Additional Information
- Dr. Daniel Eric O'Brien MD is a male Internist, has 5 years of experience and practices in Internal Medicine.
- Where does Dr. Daniel E. O'Brien practice?
- Dr. Daniel O'Brien has 3 office locations.
Dr. Daniel O'Brien practices Internal Medicine near Peoria, IL.
Additional practice locations include: Metamora, IL.
See Peoria Internists.