In his practice, he is particularly interested in refractive surgery (vision correction surgery) and cataracts. Dr. Lehmann is an in-network provider for Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO, in addition to other insurance carriers. He attended medical school at Medical College of Wisconsin. His medical residency was performed at a hospital affiliated with Baylor College of Medicine. Dr. Lehmann has received the following distinction: Texas Super Doctors.