Not sure about HMO but sometimes chiropractors are cheaper to pay without insurance involved. Highly recommend Dr. Steve. http://www.elginchiropractor.com/
847.695.0464 Yes they do walk ins. I'm going today at 11:30. He works on a lot of pro sports players. He's very good... Sikorsky Chiropractic & Fitness http://www.elginchiropractor.com/