First of all, I will give you the percentage of disability required to get this Disability Certificate. As per the PWD, Act, 1995, the following are the percentages for various liabilities to be classified as a disabled person.
Mentally handicapped - 35% minimum
Orthopedically - 40% minimum
Deaf & Dumb - 90 DB & 100 DB minimim
Blindness - 90% or above
If your disability is quantified as mentioned above, you will be eligible for getting a disability certificate.
You have to apply to the Medical boards constituted at a State or district level. The members of the board will be a chief medical officer/ sub-divisional medical officer in the District and another expert in the specified field.
The State government will issue identity cards (IC) to persons with disabilities and the same can be availed for getting any applicable benefits/concessions. This card will have lifelong validity if the age of the person is above 18 at the time of obtaining the IC.
You have to register yourself on https://www.india.gov.in/spotlight/unique-disability-id by clicking on register.
After registration, you can apply for your certificate online by clicking on " "Apply online for Disability Certificate. Reads instructions and fills up online application."
Once you fill the application, the board will refer your application to the concerned authorities. They will study your application and verify the percentage of disability and then recommend. Once they recommend, your IC will be made and sent to you by the board. When you apply for the same you have to upload a colour photo, your residence proof, identity proof, any other reservation is applicable, proof for that and a doctor certificate certifying your percentage disability.