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License & Identifications

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. William Bierer:

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Specialties & Research

Dr. William Bierer, MD is board certified in Internal Medicine.


Education & Awards

Dr. Bierer graduated from New York Medical College, Valhalla.


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Additional Information
Dr. William Fred Bierer MD is a male Internist, has 49 years of experience and practices in Internal Medicine.
Where does Dr. William F. Bierer practice?
Dr. William Bierer has 1 office location.
Dr. William Bierer practices Internal Medicine near Los Angeles, CA.
See Los Angeles Internists.