My doctor says the same. That is what the CDC recommends because 97%+ of people are immune for life after 2 vaccinations and titers can have false negatives and are costly. Obviously you can still choose to check. We had to check our titers for a work related event but our insurance would not cover the cost and the lab billed us an inflated fee, which was covered by work since it was their requirement. We are immune and so is everyone else (except one person) I know IRL who checked.
I checked because I'm pregnant and wanted peace of mind. Turns out, I'm not immune. That PA says that the blood test was wrong. Not sure if I believe him