Hello Lucky,

In order to get a  PWD certificate you have to approach the district government hospital and asked for 

your disability related surgeon,like if person is blind then he  need a eye surgeon.

Surgeon will examined your disability and you will get a disability certificate or PWD certficate.

For more information and  about Standard required by doctor you can visit the official site of 

Department of empowerment of person with disabilities,below is the link for the same-

http://disabilityaffairs.gov.in/content/page/guidelines.php

Note-copy and paste the link in a new tab to open it

Thank you.