Meet the team at our Bay Area IVF & egg freezing clinic

We believe that everyone has a right to evidence-based fertility care. Our dedicated team is here to guide and support you in making the most informed decisions for your family building journey, while prioritizing your physical and emotional well-being. We welcome and celebrate all kinds of family structures.

Walnut Creek & Bay Area IVF & Egg Freezing Clinic
Fertility & Reproductive Services In Walnut Creek & Bay Area

Expert fertility & reproductive services

Our leadership team includes top Bay Area fertility experts including Dr. Thalia Segal, Founder, Xinli Yang, Lab Director, Rhodel Simbulan, Lab Supervisor, and Anna Lopez, Perioperative Nurse Manager. With decades of combined expertise, we’ve seen a wide range of patient journeys and understand the unique experiences that each case may bring.

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

Collab Fertility
Thalia R. Segal, MD
Founder and Medical Director

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

Collab Fertility
Xinli Yang, PhD, HCLD
Lab Director

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

Collab Fertility
Rhodel Simbulan, MS
Lab SUPErVISOR

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

Collab Fertility
Anna Lopez, RN CN III
Perioperative Nurse Manager

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

Collab Fertility
Mary Breen Bennett
Finance & HR Manager

"I am dedicated to providing clear, compassionate support, helping patients navigate the complexities of fertility treatment costs so they can focus on their journey to parenthood."

Collab Fertility
Emma Fancey
Lab Assistant/Lab Tech

"I really love being part of a team that puts patient care first and uses cutting-edge lab techniques. It's amazing to apply my scientific skills to help families grow—it's such an inspiring part of my job."

Collab Fertility
Edith Benavides
Clinical Nurse Coordinator

“It is an honor to play a role in your fertility journey and rewarding to help you grow your family. I will take the time to get to know you, help you understand the process, and hold your hand every step of the way.”

Hear from the Collab community

I can’t say enough good things about my experience at Collab. Dr. Segal and the whole team are incredible! From our first meeting I really felt that Dr. Segal listened to my concerns and goals and took the time to get to know me as a person and a patient. Everyone on the team is so kind and compassionate. The level of communication is excellent and far exceeds what I’ve experienced at other fertility clinics in the past. The facility is beautiful and comfortable which is a really nice bonus too!

CASEY S.

My husband and I are absolutely blown away by Collab Fertility and Dr. Segal! From our first meeting, I was immediately struck by her compassion, clear expertise, kindness, and exceptional communication. Having been through the difficult process of IVF for over a year and using two other clinics, I speak from experience that there is NO ONE better than Dr. Segal and her clinic. We hope that through our own experience, others can benefit in their fertility journey like we finally now are.

LISSA AND JUSTIN

Oh my what a team! Thalia Segal is such an amazing, compassionate and caring Doctor. You won’t feel like a number you will feel like a person and heard. You will have customized care and not have to repeat testing already completed by other Doctors. Nurses front desk and lab staff were all friendly and welcoming!

KELLY LEHL