Meet Our Staff


We are especially interested in making all our patients feel right at home! We put your needs first to achieve efficient and comprehensive treatment. Our staff is skilled, trained and strives to provide energetic and fun-loving service to each patient. Each member of our treatment team is a registered assistant, and our office staff has years of experience treating patients with the highest level of care. We stay abreast of the latest in technological advancements by regularly attending continuing education courses and seminars.


Cynthia Lopez-Zarco, DA

Cynthia has a personality as big and endearing as her smile. She is the first friendly face that you will see when you walk through our door. Cynthia is organized and helps our patients get the schedules that best fits them. Cynthia has worked with Dr. McElroy for over 2 years, but has known him since she was a child. Following in her mother's footsteps, Cynthia has completed the dental program at Carrington College with honors, and continues to pursue her license through continued education.


Jennifer Parker, RDA

​Jennifer began her career in dentistry in 2007 and then became a Registered Dental Assistant and joined Dr. McElroy in 2010. She has experience in general dentistry, but her passion is orthodontics. She loves seeing the transformation our patients go through during their treatment, and the community feel of seeing our patients every month. When she is not in the office, Jennifer enjoys spending time with her family and friends. She and her husband spend most weekends either wakeboarding on the Delta, or dirt biking in the mountains.


Lorena Zarco, RDA

Having been in the dental field for over 20 years, Lorena is the perfect person to help with all aspects of your treatment. After graduating from Brymann College in San Francisco, Lorena's dental career took her all throughout the Bay Area. After working in the general dental field for 3 years, she started assisting in orthodontics, where she met Dr. McElroy almost 20 years ago. She continues to be a huge asset to his team, and enjoys helping her patients through their journeys. Lorena loves to see patient's smiles and confidence change over time, and how happy they are after each treatment.


Stephanie Holton, RDA

Stephanie is a Registered Dental Assistant, and has been with Dr. McElroy's office since 2017. Having worked in the orthodontic field for 14 years, Stephanie is bound to have the answer to any questions about all aspects of the office. As treatment and financial coordinator, she can be of assistance with insurance billing and scheduling appointments. She is a San Leandro native, attended Moreau Catholic High School, and graduated from Western Career College's Dental Program. When she is not helping patients in the office, Stephanie is spending time with her husband and two young children.

Dr. Scott McElroy

  • Dr. Scott McElroy - 2301 Camino Ramon, Suite 288, San Ramon, CA 94583 Phone: (925) 242-0180 Fax: (925) 242-0181

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