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).
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Specialties & Research
Dr. Charles Callahan, DO is board certified in Pediatrics and Pediatric Pulmonology.
He has special expertise in 3 Areas, including Acid Reflux Disease Gastroesophageal Reflux, Asthma, and Bronchiectasis.
More Specialties & Research
Education & Awards
Dr. Callahan graduated from UMDNJ at Stratford.More Education & Awards