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Dr. Sidney R Block, MD

Where I Provide Care

Primary Office
116 Northport AVE STE 220
Belfast, ME  04915
Phone: 207-505-4015
Fax: 207-338-8368
Map & Directions
Office Hours
Monday: Closed
Tuesday - Thursday: 8am - 4pm
Friday: 8am to noon
Waldo County General Hospital - Belfast
Dr. Sidney R Block, MD

Sidney R Block, MD

Internal Medicine | Rheumatology
I graduated from Johns Hopkins School of Medicine in 1967 and completed medical training in New York City and San Francisco. I served as a Major in the United States Air Force before coming to Maine in 1975. I am a Fellow of the American College of Physicians and Master of the American College of Rheumatology. I joined Waldo County General Hospital in 2014 and have lived in the Belfast area since 1995 with my wife, Martha. I enjoy welcoming those who have come to my office initially as patients, but now as friends as well.
Language(s) Spoken

Education & Credentials

Education & Credentials

Board Certification

  • Internal Medicine, 1971
  • Rheumatology, 1974


  • Hospital for Special Surgery, Rheumatology, 1975


  • San Francisco General Hospital and Medical Center, Internal Medicine, 1970
  • Veterans Affairs Medical Center, Internal Medicine, 1971


  • Cornell University Medical College, Internal Medicine, 1969

Medical School

  • Johns Hopkins University School of Medicine, 1967
Hospital Affiliation
  • MaineHealth Accountable Care Organization since 2014
  • Waldo County General Hospital since 1992