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John Day, M.D.


General Orthopaedics

Sports Medicine

Total Joint Replacement

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John Day, M.D. is a board certified orthopaedic surgeon. His specialties include joint replacement surgery, arthroscopic surgery, general orthopaedics, sports medicine, and fracture care. He treats patients in the Marietta and East Cobb locations.

Dr. Day received his Doctor of Medicine Degree from Wayne State University in Detroit, Michigan. He completed his General Surgery Internship and Orthopaedic Surgery Residency from Detroit Medical Center in Detroit, Michigan.

Dr. Day is currently serving as Pinnacle's president of the practice. He is very active in his community and serves as team physician to several local high schools and sporting events. He has also written many publications and conducted presentations around the country.

Dr. Day and his wife live in Marietta with their two children. Dr. Day is active in the Boy Scouts and in his free time enjoys sports of all kinds and spending time with his family.

Hospital Affiliations

  • WellStar Kennestone Hospital
  • Northside Hospital-Cherokee
  • Pinnacle Surgery Center Woodstock

Education & Training

Undergraduate Education
Emory University
Atlanta, Georgia
Bachelor of Science in Chemistry and Biology

Medical School
Doctor of Medicine
Wayne State University School of Medicine
Detroit, Michigan

Postgraduate Training 
General Surgery Internship
Detroit Medical Center
Detroit, Michigan

Orthopaedic Surgery Residency
Detroit Medical Center
Detroit, Michigan

American Board of Orthopaedic Surgery

Professional Organizations

American Academy of Orthopaedic Surgeons

Cobb Medical Society

Georgia Orthopaedic Society