Meet our Care Team!

Dale Yoo
MD, FACC, FHRS

Managing Partner and President, Board Certified Cardiologist and Electrophysiologist

Dr. Yoo started Heart Rhythm Specialists in 2019 in order to integrate state of the art science and technologies with the personalized approach to clinical medicine. With his extensive background in engineering and research he has been able to create a new kind of practice to cater to the specific needs of the human condition. He enjoys playing golf and tennis as well as traveling the world teaching and sharing knowledge.

Amanda de Avillez
MSN, APRN, AGACNP-BC

Acute Care Nurse Practitioner
Hospital Lead

“BIO COMING SOON”
 
 

C. Diane Martinez
MSN, APRN, FNP-BC

Family Nurse Practitioner

Diane earned her Master’s Degree from the University of Texas at Arlington. She has more than 13 years of experience in acute and critical care. She has practiced as a Nurse Practitioner for over 5 years. When she’s not caring for patients, Diane enjoys dancing, swimming, hiking with her family, and is an avid reader. 

Ashley Worthington

Medical Assistant

“BIO COMING SOON”

April Sawyer

Public Relations/Marketing

April joined the Heart Rhythm Specialist team to help the clinic strategically manage their brand by crafting compelling advertisement materials, effectively managing communications, and channeling a positive influence with a proactive outreach.
She has over 20 years of experience in customer relations, including medical management, retail management, and managing her own photography business for the past 12 years. April is a creative professional who enjoys every opportunity to interact with people.
She has been married to her husband for 24 years and has a wonderful daughter.  In her free time, she enjoys spending time with her family, pets, painting and exploring new artistic hobbies.