Doctor on call

Our new project - mobile app which connects patients with doctors. Upon registration, users will be able to call the doctors, see their geolocation and approximate time of arrival. After the visit users may evaluate the doctor and that evaluation will contribute to the doctor's overall rating.
For doctors there is another app which runs on Android tablets. It has simple and clear design. Doctors can manage their schedules, see the details of the call and use navigation to find the patient's house.
More info https://goo.gl/2qatKR
Full case study: http://handh.ru/projects/17/?lang=en