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. Alan Barker:
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Specialties & Research
Dr. Alan Barker, MD is board certified in Internal Medicine and Pulmonary Disease.
- He has special expertise in 6 areas:
- Chronic Obstructive Pulmonary Disease (COPD)
- Critical Care
- Lung Cancer
- Obstructive Lung Diseases
- alpha 1-Antitrypsin Deficiency
Education & Awards
Dr. Barker graduated from University of Missouri at Columbia.
Dr. Barker has 3 hospital affiliations:
- Albany General Hospital
- Oregon Health Science University
- OHSU Hospital