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. David Irwin:
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- Currently 2.5 of 4 stars
The overall average patient rating of Dr. David Irwin is Good.
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Education & Awards
Dr. Irwin graduated from Western University of Health Sciences, Pomona.
Dr. Irwin has 2 hospital affiliations:
- UPMC Horizon
- Hamot Medical Center