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Internist, Sleep Medicine Specialist
31 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).

Learn more about Dr. William Katz:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. William Katz is Average. Dr. Katz has been reviewed by 2 patients who have provided 0 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 4.0
Courteous Staff 4.0
Accurate Diagnosis 4.0
Bedside Manner 4.0
Spends Time with Me 4.0
Follows Up After Visit 3.0

Specialties & Research

Dr. William Katz, MD is board certified in Internal Medicine and Sleep Medicine.

  • He has special expertise in 3 areas:
  • Asthma
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Insomnia

Education & Awards

Dr. Katz graduated from Michigan State University , East Lansing.


Dr. Katz has 14 hospital affiliations:

  • St Mary's Mercy Medical Center 
  • Metropolitan Hospital 

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Additional Information
Dr. William Marc Katz MD is a male Internist, has 31 years of experience and practices in Internal Medicine and Sleep Medicine.
Where does Dr. William M. Katz practice?
Dr. William Katz has 1 office location.
Dr. William Katz practices Internal Medicine and Sleep Medicine near Kalamazoo, MI.
See Kalamazoo Internists and Kalamazoo Sleep Medicine Doctors.