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Internist, Critical Care Specialist, Pulmonologist (lungs)
27 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 (4)

The overall average patient rating of Dr. William Decker is Excellent. Dr. Decker has been reviewed by 19 patients who have provided 4 comments. The rating is 5 out of 5 stars.

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

Specialties & Research

  • He has special expertise in 1 area:
  • Asthma

Education & Awards

Dr. Decker graduated from Des Moines University. He has 4 awards.

Patients' Choice 5th Anniversary Award (2012 - 2013)
Patients' Choice Award (2008 - 2014)
Compassionate Doctor Recognition (2010 - 2014)
On-Time Doctor Award (2014)


Dr. Decker has 10 hospital affiliations:

  • Metropolitan Hospital 
  • Toledo Hospital 

> > > > Dr. William Decker, DO

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Additional Information
Dr. William Clark Decker DO is a male Internist, has 27 years of experience and practices in Internal Medicine, Critical Care Medicine, and Pulmonary Disease.
Where does Dr. William C. Decker practice?
Dr. William Decker has 2 office locations.
Dr. William Decker practices Internal Medicine, Critical Care Medicine, and Pulmonary Disease near Adrian, MI.
Additional practice locations include: Toledo, OH.
See Adrian Internists, Adrian Critical Care Practitioners, and Adrian Pulmonologists.