For a K-1 medical, the panel physician follows the CDC Technical Instructions. There isn’t a “menu” you can pick from it’s age-based requirements. At 24, they’ll look for things like MMR, varicella, Tdap, influenza (if in season), and possibly hepatitis B. If you don’t have records, the doctor will assume you’re unvaccinated and either test for immunity or administer the shots.
Two practical points:
1. Yes, you can start locally. If you can get MMR, Tdap, varicella, etc. at a government clinic in India, it’s often cheaper than paying U.S. panel physician rates.
2. Don’t stress about completeness. You don’t need to have every series finished before the visa just documented as “started” or immune.
Plenty of applicants show up with no records; it’s common. The key is either bringing proof of doses you do get beforehand or being ready for the panel physician to update everything during the exam.