Our Latest News We are excited to announce our newest physician, Dr. Andy Zhu who specializes in orthopaedic surgery with an emphasis on hand, wrist and elbow surgery!

Thanks for printing!  Don't forget to come back to Pinnacle Orthopaedics for fresh articles!

John Day, M.D.


General Orthopaedics

Sports Medicine

Total Joint Replacement

Image for John Day, M.D.

John Day, M.D. has been providing orthopaedic care to patients of Pinnacle Orthopaedics since 1994. His primary practice is in Marietta, Georgia. He sees patients in the Marietta, East Cobb, and Woodstock locations. 

Dr. Day is a Board Certified Orthopaedic Surgeon. His specialties include joint replacement surgery, arthroscopic surgery, general orthopaedics, sports medicine, and fracture care. 

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 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
  • Marietta Surgery Center 

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