Dr. Geemson Oo M.D. PLLC - 3775 Seneca St. West Seneca, NY 14224 Dr. Geemson Oo M.D., PLLC Welcome to Dr. Oo's site Patient Portal Preview and Tutorial Please watch the video of Patient Portal Preview for better understanding of Patient Portal. *Disclaimer: NOT ALL the features will be available for patients at this time..