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. William Marsh, MD is board certified in Allergy & Immunology and Pediatrics.
Education & Awards
Dr. Marsh graduated from The University of Texas at San Antonio.
Dr. Marsh has 4 hospital affiliations:
- Exempla Inc Saint Joseph Hospital
- Exempla Good Samaritan Medical Center