Dr. Gary Hatlen, a 1989 Palmer Graduate, is a top rated 5 Star Chiropractor in Phoenix, Arizona. Dr. Hatlen is a Certified Chiropractic Neurologist, Certified Postural Neurologist and National Academy of Sports Medicine-Corrective Exercise Specialist. The patients he has the most success with have headaches, migraines, TMJ, neck pain, low back pain, disc bulging or herniation, sciatica, shoulder pain, knee pain etc.