Patient Portal ; Contact . Locations ... 7450 W 135th Street Overland Park, KS 66223. Main: 913-888-4567. Fax: 913-888-1277. Billing: 913-825-0923 ... CHADD ADHD Toolkit; Pediatric Partners Pinterest; Finding More Help; eNewsletters; Reviews. Staff was helpful and caring. Talked primarily to my teenage son, but looked to me for confirmation. ....