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Addiction Medicine Specialist, Psychiatrist, Adolescent Specialist
33 years of experience
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 Sullivan:

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  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 Sullivan is Excellent. Dr. Sullivan has been reviewed by 3 patients who have provided 0 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

  • 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
  • Neurology
  • Schizophrenia
  • Sleep Disorders

Education & Awards

Dr. Sullivan graduated from University of Massachusetts, Worcester.


Dr. Sullivan has 4 hospital affiliations:

  • Maine Medical Center 
  • Mercy Hospital 

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Additional Information
Dr. William M Sullivan MD is a male Psychiatrist, has 33 years of experience and practices in Psychiatry, Addiction Medicine, and Addiction Psychiatry.
Where does Dr. William M. Sullivan practice?
Dr. William Sullivan has 4 office locations.
Dr. William Sullivan practices Psychiatry, Addiction Medicine, and Addiction Psychiatry near South Portland, ME.
Additional practice locations include: Portland, ME.
See South Portland Psychiatrists and South Portland Addiction Specialists.