Thank you for visiting Peak Performance Chiropractic. We are located in Issaquah, WA and would enjoy the opportunity to meet with you to discuss your health needs. At Peak Performance Chiropractic, our purpose is to adjust, educate, and empower individuals toward optimal wellness through chiropractic. Dr. Alastair Harper - Chiropractor 1315 NW Mall Street, Suite 2 Issaquah, WA 98027 Phone: 425.391.8113 Fax: 425.391.8104 View map and directions Office Hours Monday-Friday 9 AM-6 PM Please call 425.391.8113 for an appointment.