| S.No. | DISTRICT | HUD | Block | RD Block | PHC | TYPE |
| 1 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Keezhaiyur | Addl. PHC |
| 2 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Akkur | Upgraded Block PHC |
| 3 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Melaperumpallam | Addl. PHC |
| 4 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Sankaranpandal | Addl. PHC |
| 5 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Sembanarkoil | Addl. PHC |
| 6 | Nagapattinam | Nagapattinam | Akkur | Sembanarkoil | Thirukadaiyur | Addl. PHC |
| 7 | Nagapattinam | Nagapattinam | Kali | Mayiladuthurai | Elanthope | Addl. PHC |
| 8 | Nagapattinam | Nagapattinam | Kali | Mayiladuthurai | Kali | Block Main PHC |
| 9 | Nagapattinam | Nagapattinam | Kali | Mayiladuthurai | Manalmedu | Upgraded PHC |
| 10 | Nagapattinam | Nagapattinam | Kali | Mayiladuthurai | Murugamangalam | Addl. PHC |
| 11 | Nagapattinam | Nagapattinam | Kali | Mayiladuthurai | Villiyanallur | Addl. PHC |
| 12 | Nagapattinam | Nagapattinam | Kariapattinam | Vedaranyam | Ayakaranpulam | Addl. PHC |
| 13 | Nagapattinam | Nagapattinam | Kariapattinam | Vedaranyam | Kariapattinam | Upgraded Block PHC |
| 14 | Nagapattinam | Nagapattinam | Kariapattinam | Vedaranyam | Kodikarai | Addl. PHC |
| 15 | Nagapattinam | Nagapattinam | Kariapattinam | Vedaranyam | Thethakkudi | Addl. PHC |
| 16 | Nagapattinam | Nagapattinam | Kariapattinam | Vedaranyam | Vaimedu | Addl. PHC |
| 17 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Kiliyanur | Addl. PHC |
| 18 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Komal | Addl. PHC |
| 19 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Konerirajapuram | Upgraded Block PHC |
| 20 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Manganallur | Addl. PHC |
| 21 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Mekkirimangalam | Addl. PHC |
| 22 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Nakkampadi | Addl. PHC |
| 23 | Nagapattinam | Nagapattinam | Konerirajapuram | Kuttalam | Theralandur | Addl. PHC |
| 24 | Nagapattinam | Nagapattinam | Mayiladuthurai | Mayiladuthurai Mpty | Mayiladuthurai | Urban PHC |
| 25 | Nagapattinam | Nagapattinam | Nagapattinam | Nagapattinam Mpty | Nagore | Urban PHC |
| 26 | Nagapattinam | Nagapattinam | Nagapattinam | Nagapattinam Mpty | Marunthukothalam | Urban PHC |
| 27 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Edamanal | Addl. PHC |
| 28 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Kollidam | Addl. PHC |
| 29 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Kunnam | Addl. PHC |
| 30 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Mathiravelur | Addl. PHC |
| 31 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Nallur | Upgraded Block PHC |
| 32 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Pudupattinam | Addl. PHC |
| 33 | Nagapattinam | Nagapattinam | Nallur | Kollidam | Thirumullaivasal | Addl. PHC |
| 34 | Nagapattinam | Nagapattinam | Sirkali.. | Sirkali Mpty | Sirkazhi | Urban PHC |
| 35 | Nagapattinam | Nagapattinam | Thalaignayiru | Thalaignayiru | Naluvedapathy | Addl. PHC |
| 36 | Nagapattinam | Nagapattinam | Thalaignayiru | Thalaignayiru | Neermulai | Addl. PHC |
| 37 | Nagapattinam | Nagapattinam | Thalaignayiru | Thalaignayiru | Thalaignayiru | Upgraded Block PHC |
| 38 | Nagapattinam | Nagapattinam | Thevur | Kilvelur | Thevur | Upgraded Block PHC |
| 39 | Nagapattinam | Nagapattinam | Thevur | Kilvelur | Valivalam | Addl. PHC |
| 40 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Enankudi | Addl. PHC |
| 41 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Ganapathipuram | Addl. PHC |
| 42 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Thirukannapuram | Addl. PHC |
| 43 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Thirumarugal | Upgraded Block PHC |
| 44 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Thirupayathankudi | Addl. PHC |
| 45 | Nagapattinam | Nagapattinam | Thirumarugal | Thirumarugal | Thittacheri | Addl. PHC |
| 46 | Nagapattinam | Nagapattinam | Thirupoondi | Keelaiyur | Palakurichi | Addl. PHC |
| 47 | Nagapattinam | Nagapattinam | Thirupoondi | Keelaiyur | Prathabaramapuram 93 | Addl. PHC |
| 48 | Nagapattinam | Nagapattinam | Thirupoondi | Keelaiyur | Thirupoondi | Upgraded Block PHC |
| 49 | Nagapattinam | Nagapattinam | Thirupoondi | Keelaiyur | Velankanni | Upgraded PHC |
| 50 | Nagapattinam | Nagapattinam | Thirupoondi | Keelaiyur | Vilunthamavadi | Addl. PHC |
| 51 | Nagapattinam | Nagapattinam | Thiruvengadu | Sirkazhi | Kathiruppu | Addl. PHC |
| 52 | Nagapattinam | Nagapattinam | Thiruvengadu | Sirkazhi | Poompukar | Addl. PHC |
| 53 | Nagapattinam | Nagapattinam | Thiruvengadu | Sirkazhi | Thiruvengadu | Upgraded Block PHC |
| 54 | Nagapattinam | Nagapattinam | Thiruvengadu | Sirkazhi | Valluvakudi | Addl. PHC |
| 55 | Nagapattinam | Nagapattinam | Vadugacheri | Nagapattinam | Themangalam | Addl. PHC |
| 56 | Nagapattinam | Nagapattinam | Vadugacheri | Nagapattinam | Vadavur | Addl. PHC |
| 57 | Nagapattinam | Nagapattinam | Vadugacheri | Nagapattinam | Vadugacheri | Upgraded Block PHC |
| 58 | Nagapattinam | Nagapattinam | Vedaranyam .. | Vedaranyam Mpty | Vedaranyam | Urban PHC |