Dr. Krummerman and Nan are amazing. I had spinal fusion in 2009 at C5 and C6. A month ago, I started having pain down my left arm and severe weakness. I recognized the pain so I immediately called the office, of course it was a Saturday, so I talked to an associate of Dr. Krumerman's and he suggested I go to Dallas to the ER. I did and followed up with Dr Krummerman and it's now been 6 weeks and he got me through without surgery. Dr Krummerman and Nan are so caring and compassionate I trust them with my life. Amazing, amazing people. The entire staff is excellent.