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Addiction Medicine Specialist, Adolescent Specialist, Psychiatrist
33 years of experience
Accepting new patients
Video profile
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 Greenberg:

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 Greenberg is Excellent. Dr. Greenberg has been reviewed by 2 patients who have provided 0 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

Dr. William Greenberg, MD is board certified in Psychiatry.

  • He has special expertise in 8 areas:
  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Bipolar Disorder / Manic Depressive Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Obsessive-Compulsive Disorder (OCD)
  • Schizophrenia
  • Sleep Disorders

Education & Awards

Dr. Greenberg graduated from Yeshiva University, Bronx.


Dr. Greenberg has 3 hospital affiliations:

  • Nyack Hospital 
  • Good Samaritan Hospital 
  • Bergen Regional Medical Center 


  • Spanish

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Additional Information
Dr. William Michael Greenberg MD is a male Psychiatrist, has 33 years of experience and practices in Psychiatry, Addiction Psychiatry, and Forensic Psychiatry.
Where does Dr. William M. Greenberg practice?
Dr. William Greenberg has 1 office location.
Dr. William Greenberg practices Psychiatry, Addiction Psychiatry, and Forensic Psychiatry near Ridgewood, NJ.
See Ridgewood Psychiatrists and Ridgewood Addiction Specialists.