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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. John Frownfelter:

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Specialties & Research

Dr. John Frownfelter, MD is board certified in Internal Medicine.

Education & Awards

Dr. Frownfelter graduated from Wayne State University, Detroit.


Dr. Frownfelter has 4 hospital affiliations:

  • Henry Ford Macomb Hospitals 
  • Providence Hospital and Medical Center 

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Additional Information
Dr. John Glen Frownfelter MD is a male Internist, has 19 years of experience and practices in Internal Medicine.
Where does Dr. John G. Frownfelter practice?
Dr. John Frownfelter has 5 office locations.
Dr. John Frownfelter practices Internal Medicine near Southfield, MI.
Additional practice locations include: Pontiac, MI and Clinton Township, MI.
See Southfield Internists.