Meet our care team

We are committed to fostering a safe and supportive environment with transparency, collaboration, and streamlined communication.

Collab Fertility leadership team, located in Walnut Creek
Thalia R. Segal, MD
Founder and Medical Director

“The most important thing I can do as a fertility doctor is listen to my patients.”

Xinli Yang, PhD, HCLD
Lab Director

“Our lab is equally as important as your clinician. You will be in good hands with us.”

Rhodel Simbulan, MS
Lab SUPErVISOR

“Everything we do is based on scientific truth, ensuring positive fertility outcomes under our care.”

Anna Lopez, RN CN III
Perioperative Nurse Manager

“I believe every patient should have access to the best standard of fertility care.”