His qualifications are irrelevant if he's deliberately putting out misleading information in pursuit of a political goal.

Also, a medical license doesn't qualify a person as an epidemiologist or any other such expert, especially given that his license is in opthalmology.

Let's also not forget that he created a bogus certification board, started by family members, to certify his ability to practice. He's not currently certified to practice medicine by any legitimate medical organization.