Dr. Matthew S Siegel, MD

Where I Provide Care

Primary Office

123 Andover RD
Westbrook, ME  04092
phone: 207-761-2200
fax: 207-761-2108
236 Gannett DR
South Portland, ME  04106
phone: 207-661-6725
fax: 207-761-0783
The CADD Clinic is open 8:30am - 5pm on Mon/Wed/Thurs/Friday and 8:30am - 7pm on Tuesday. Our school runs weekdays from 8am  - 2pm.
123 Andover Road
Westbrook, ME  04092
Dr. Matthew S Siegel, MD

Matthew S Siegel, MD

Child & Adolescent Psychiatry, Psychiatry

I am Director of the Developmental Disorders Program of MBH, Associate Professor of Psychiatry and Pediatrics of Tufts University and Faculty Scientist at MMC Research Institute. My educational background includes undergraduate studies at Amherst College followed by Stanford Medical School, and training at Brown University in child psychiatry and pediatrics. I am nationally recognized and have a passion for systems of care and research involving children with autism, intellectual disability and co-occurring emotional and behavioral disorders.
Clinical Interests
Autism Spectrum Disorders, Intellectual Disability, Psychiatric Comorbidity

Education & Credentials

Education & Credentials

Board Certifications
  • Child & Adolescent Psychiatry, 2021
  • Psychiatry, 2010
  • Brown University School of Medicine
Medical Education
  • Stanford University School of Medicine, MD, 2003



  • Maine Behavioral Healthcare since 2008
  • Spring Harbor Hospital since 2008