About Raj Devarajan, MD

Dr. Raj Devarajan has more than 30 years of medical training and experience. He is board certified in Gastroenterology, Internal Medicine, Psychiatry and Child Psychiatry. He earned his medical degree from Madras Medical College in Chennai, India, and completed his residency and gastroenterology fellowship training at the Yale, Harvard University and Tufts University medical centers. Dr. Devarajan has been recognized as a “Top Doctor” by Boston Magazine.

Dr. Devarajan is currently the president of the Massachusetts Gastroenterology Association.  He has served as chief of Gastroenterology at Nashoba Valley Medical Center and Emerson hospital, where he also served as president of medical staff. He has introduced advanced therapeutic procedures at both hospitals.  He also served as president of the American Association of Gastroenterology of Indian Origin. He was former chair of Emerson Hospital’s bylaw committee, a member of Independence Physicians Association and chair of the credentials committee.

Born in India, Dr. Devarajan has lived in America since age 9. His father was a physician, and pursuing a career in medicine became Devarajan’s passion from a very early age.  In 1994, he moved to Acton, where he raised his two sons, Karthik and Shiva.  He enjoys world traveling and golf in his personal time.

Conditions & Procedures

  • Abdominal Pain
  • Acid Reflux & GERD
  • Colon Cancer Screening
  • Colon Diseases & Polyps
  • Constipation
  • Crohn’s & Ulcerative Colitis
  • Gastrointestinal Bleeding
  • Hepatitis
  • Indigestion
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Capsule Endoscopy (Pill Cam)
  • Colonoscopy (Screening & Diagnostic)
  • EGD (Upper Endoscopy)

Office Locations

Primary Location

Picture of the Acton Office


45B Discovery Way
Acton, MA 01720

Phone: 978-429-2010
Fax: 978-264-1936

Procedure Locations

Having a procedure? It may not always be in the same location where you consulted with your doctor. Check with your doctor to make sure you’re headed to the right place.



Madras Medical College


Tufts University School of Medicine at Boston


Yale University School of Medicine


Harvard Medical School


Yale University School of Medicine-Surgery GME

Professional Highlights


Board Certified in Gastroenterology

Board Certified in Internal Medicine

Awards & Recognitions

  • Boston Magazine, Top Doctor

Professional Memberships

  • American Association of Gastroenterology of Indian Origin
  • Massachusetts Gastroenterology Association
  • Independence Physicians Association