Gary Orris, MD and Sandy Sullivan P.A, are unlike any other team you’ve ever met. They treat patients as the unique individuals they are. They focus your care more on preventing illness, so you won’t have to suffer.


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Gary S. Orris, M.D.

Dr. Orris earned his medical degree from the Medical College of Georgia in Augusta. He completed his post-graduate training in Emergency Medicine at Bowman Gray School of Medicine at Wake Forest University in Winston-Salem, North Carolina.

Dr. Orris is a board certified Emergency Medicine physician. He is a member of the American College of Emergency Physicians; the Georgia College of Emergency Physicians, where he served on the board of directors from 1998-2001; the Medical Association of Georgia; and the South Forsyth County Rotary Club. 

Dr. Orris is honored to serve as the Medical Director for the Forsyth County Fire Department, the Forsyth County 911 Service, and Atlanta Training Center. He is an Assistant Clinical Professor in the Department of Emergency Medicine at the Medical College of Georgia.

As a native of Georgia, Dr. Orris has spent his entire healthcare career caring for patients in the communities of metro Atlanta and eastern Georgia. 

In December 2004, Dr. Orris opened his own private practice, Lanier Family Healthcare, LLC. 

Dr. Orris, his wife Billie, and their two children reside in Cumming, Georgia.


Sandra Sullivan, P.A.

Sandra Sullivan has been a practicing Physician Assistant in the Atlanta Area since 1999. She completed her graduate training at the Emory University Assistant program. Her bachelors degree is in Nutrition Science from Florida State University.

She can examine, diagnose, and treat health problems in children and adults of all ages. She assists Dr. Orris in his practice and often has appointments available for same day sick visits. 

Sandra currently resides in Johns Creek with her family.