32 years of experience
Accepting new patients
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).

Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. William Kellner is Excellent. Dr. Kellner has been reviewed by 8 patients who have provided 2 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 4.7
Courteous Staff 4.5
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. William Kellner, MD is board certified in Pediatrics.

Education & Awards

Dr. Kellner graduated from University of Wisconsin at Madison. He has 2 awards.

Compassionate Doctor Recognition (2014)
On-Time Doctor Award (2014)


Dr. Kellner has 2 hospital affiliations:

  • Bellin Hospital 
  • St Vincent Hospital 

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Additional Information
Dr. William Joseph Kellner MD is a male Pediatrician, has 32 years of experience and practices in Pediatrics.
Where does Dr. William J. Kellner practice?
Dr. William Kellner has 6 office locations.
Dr. William Kellner practices Pediatrics near De Pere, WI.
Additional practice locations include: Green Bay, WI.
See De Pere Pediatricians.