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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).

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Specialties & Research

Dr. Richard Mattison, MD is board certified in Psychiatry.

  • He has special expertise in 12 areas:
  • Anxiety Disorders
  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Bipolar Disorder / Manic Depressive Disorder
  • Child Behavior Disorders
  • Depression
  • Depressive Disorder
  • Insomnia
  • Learning Disorders
  • Mental Disorders
  • Schizophrenia
  • Sleep Disorders
  • Speech Disorders

Education & Awards

Dr. Mattison graduated from Cornell University, New York. He has 3 awards.

One of America's Leading Experts on:
Child Behavior Disorders
Mental Disorders
Speech Disorders


Dr. Mattison has 4 hospital affiliations:

  • Stony Brook University Hospital 
  • Milton S. Hershey Medical Center 

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Additional Information
Dr. Richard Edward Mattison MD is a male Psychiatrist, has 40 years of experience and practices in Psychiatry.
Where does Dr. Richard E. Mattison practice?
Dr. Richard Mattison has 3 office locations.
Dr. Richard Mattison practices Psychiatry near Stony Brook, NY.
Additional practice locations include: Harrisburg, PA and Hershey, PA.
See Stony Brook Psychiatrists.