Cheyyar Health Unit District in Tiruvannamalai is comprise of 8 Blocks namely 1.West Arani, 2.Arani, 3.Peranamallur, 4.Vembakkam, 5.Cheyyar, 6.Anakkavur, 7.Vandavasi,8.Thellar. The population is 9,25,146 and has 426 Village Panchayats,3 Town Panchayats,3 Municipalities. It has 41 Primary Health Centres among which 8 are Block Primary Health Centres and 6 are Upgraded 30 Bedded Primary Health Centres. There are 8 Operation Theatres and all are in functioning status.In total there are 157 Health Sub Centres comes under Primary Health Centres in Cheyyar Health Unit District. Most of the people are middle and low economic status and labours.
The following services are provided in Primary Health Centres and Health Sub Centres : Ante Natal Care,Intra Natal Care,Post Natal Care Services.Family Planing Services,Immunisation,Maternal Care,Disease Surveillance, Control of Outbreak, Health Education, etc.,Most of the national programmes like Pulse Polio Immunisation,DEC MDA,NRHM Activities,IDSP,etc.,also provided to Public.