He will go for any branch, he will change to other branch. 9th house (higher education), 10th house (profession) are indicating Saturn in 10th house and connected to 11th house. Saturn deals with Dental, Bones, Nerves, Joints etc. So I hope he may go for Rheumat0logy, Oncology or Neurology, Radiology.
Mercury dasa Moon bhukti is upto 07-02-2027. Mercury controls CNS,brain and kidneys. Moon has control over mind aspected by Saturn. So there would be dilemma in selection of course at present and there would be shift to another branch unexpectedly. So he may select Nephrology. I hope he may go for Saturn and Venus related fields like Endocrinology. Next bhukti of Mars which starts on 07-02-2027 will give him courage. He will earn fame in his field.
Marriage may take place in between 04-02-2028 to 23-8-2030. There is a chance for more than one marriage or one alliance may miss that came to a stage of fixation. The bride comes from your local area. She may be a doctor also.
This is my opinion. Please invite opinions of other learned astrologers, like Navneet Khanna jee.
Good Luck
JVS Rao (KP system follower)