
Dr. Feyrer-MelkM.D.
Anne-Marie Feyrer-Melk, M.D., has been in practice since 1997. She received her medical degree from the University of Wisconsin Medical School, and her internship, residency, and fellowship training at Banner Samaritan Medical Center in Phoenix, focusing on cardiovascular diseases. She was recently honored as a 2022 Outstanding Woman in Business by the Phoenix Business Journal.

Dr. Steve Feyrer-MelkPh.D., M.Ed.
Dr. Steve received his Ph.D. from Arizona State University in Exercise Science and Wellness, and his master’s degree from Bowling Green State University in Human Performance. He currently serves as the Chief Science Officer for a med tech company, has a history of applying his craft in both health and athletic-performance settings, and is a highly sought-after consultant and speaker.

Dr. Donna DemarcoC.H.N., Ph.D.
Dr. Donna Demarco holds a doctorate in Holistic Nutrition and has been a part of the Optimal Heart Center & Body Lab since 2011. Besides working with patients, she is a Health Educator for various companies and conducts Biometric Health Screenings in the Phoenix area.
Synthia Duncan Office Manager
Synthia has over 15 years of customer service and management experience. She has a passion for helping people feel their best.

Alex HolginMedical Technician
Alex is a native of Arizona with over 15 years of experience working in the medical field. As a 10-year veteran of our OHC staff, Alex is the medical technician and helps to oversee the member-patient flow through the front office. Alex is also a full-time baseball mom and loves traveling.

Gabby Holgin Receptionist/Medical Assistant
Gabby is an Arizona native medical assistant with over 9 years of experience in both front-office and back-office. She is passionate about providing excellent service and helping create positive experiences for patients and healthcare teams. Outside of work Gabby enjoys spending quality time with her 2-yr old son and making lasting memories with him.
