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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 Wittman:

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Specialties & Research

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

Education & Awards

Dr. Wittman graduated from University of Minnesota, Twin Cities, Minneapolis.


Dr. Wittman has 15 hospital affiliations:

  • Bellin Hospital 
  • St. Mary's Hospital Medical Center-Green Bay 

> > > > Dr. William Wittman, MD

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Additional Information
Dr. William James Wittman MD is a male Internist, has 32 years of experience and practices in Internal Medicine.
Where does Dr. William J. Wittman practice?
Dr. William Wittman has 1 office location.
Dr. William Wittman practices Internal Medicine near Oconto Falls, WI.
See Oconto Falls Internists.