Shannon Davis-McGivern, CPC, CPB, CMRS

Billing Manager, Brain and Spine Center

Shannon has more than eight years of hands-on experience in a variety of health care settings including primary care and specialty practices. She enjoys the full range of the billing and coding industry. She holds three certifications, Certified Professional Coder (CPC), Certified Professional Biller (CPB), through the American Academy of Professional Coders (AAPC) and the Certified Medical Reimbursement Specialist (CMRS) certification through the American Medical Billing Association. Outside her primary employment responsibilities, Shannon enjoys movies with her husband. Shannon has two children, daughter Krystal, 22, son Matt, 19 and a tabby cat, Sable. You can reach her via phone at (480) 917-3706 or via email at

Lisa Aguero

Office Manager

Lisa has worked in the healthcare field for 16 years. Her background includes working in the imaging department for a large Radiologist practice for 14 years as an assistant to all Radiologists in the practice. She then took courses to obtain knowledge in billing /coding and administrative medical assistant fields. She joined our practice October 2015. She enjoys spending time with her children and husband on the weekends.

Lupita Mejia

Front Office Manager

Lupita has worked in the healthcare field for 11years including various roles including, front desk, referral, authorizations, and office management. Her background includes working at Canyon Pediatrics/Family Physician, Gilbert Primary Care. She enjoys spending time with her son and husband in her free time.