Was a patient of Dr. Yen, I say was because he moved locations to North Las Vegas at Stewart Chiropractic. He is an excellent Dr. very gentle on your back and does certain techniques that really ease and release tense muscles on your back instantly. If you live in the North Las Vegas area I suggest you go visit him, you will not regret! He's off of Camino Al Norte and Ann Rd. GOOOO!!!!