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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
Map & Directions
236 Gannett DR
South Portland, ME  04106
Phone: 207-661-6725
Fax: 207-761-0783
Map & Directions
Office Hours
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.
37 Andover Road
Portland, ME  04102
Phone: 207-661-3600
Map & Directions
Maine Medical Center - Portland
Spring Harbor Hospital - Westbrook
Dr. Matthew S Siegel, MD

Matthew S Siegel, MD

Psychiatry | Pediatrics | Child and Adolescent Psychiatry
Matthew Siegel, MD, is Vice President of Medical Affairs for the Developmental Disorders Service Line of Maine Behavioral Healthcare, Associate Professor of Psychiatry and Pediatrics of Tufts University and Faculty Scientist at MaineHealth Institute for Research. His educational background includes undergraduate studies at Amherst College followed by Stanford Medical School, and training at Brown University in child psychiatry and pediatrics. He is passionate about, and nationally-recognized for, his work with systems of care and research involving children with autism, intellectual disability and co-occurring emotional and behavioral disorders.
Clinical Interest
Autism Spectrum Disorders, Intellectual Disability, Psychiatric Comorbidity
Language(s) Spoken

Education & Credentials

Education & Credentials

Board Certification

  • Child and Adolescent Psychiatry, 2021
  • Psychiatry, 2010


  • Warren Alpert Medical School of Brown University, 2008

Medical School

  • Stanford University School of Medicine, 2003
Hospital Affiliation
  • Maine Medical Center since 2008
  • Spring Harbor Hospital since 2008