My gynae is/was Dr Denas Chandra, he has a clinic at Aljunied. Not sure of open on Sun but I know he's open at night (I usually go to his clinic at Parkway East). He delivers at PEH only but I think if you compare the price, it's only a very small diff b/w PEH and Kandang Kerbau Hospital.
Anyway, he's a really nice guy and his nurses are also very sweet and chatty.
The Women's Specialist
Blk 113 Aljunied Ave 2 Tel: 67457668/64407186