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
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.”

Collab Fertility
Jassmin Woodard-Levi
New Patient Coordinator & Medical Assistant

"Every patient has a unique story; I’m here to listen and understand yours. I’ll take the time to get to know you, tailor our services to meet your needs and provide you with the highest standard of care."

Collab Fertility
Janessa Balandra
Medical Assistant

"The team at Collab is incredibly skilled, and we work so seamlessly together—it's like being part of a big, supportive family. I treat every patient with the same care and respect I would offer a family member."

Collab Fertility
Christy Kok
Lab Assistant

"It’s incredibly meaningful to use my education and skills to help people build their families. The lab team approaches every task with care and precision, and we’re deeply invested in achieving the best possible outcomes for our patients."

Collab Fertility
Elaine Pettler
Clinical Nurse Coordinator

"I find great fulfillment in my role of helping people navigate and overcome fertility struggles. I’m here to offer personalized emotional support and guidance throughout every step of your journey."

Collab Fertility
Jade Aganus
Practice Coordinator

"I love helping patients achieve their dream of growing their families. I am so proud to be part of a team that delivers exceptional patient care."

Collab Fertility
Anna Hirsh
Patient Service Representative

"I love being part of a warm, dedicated team that treats every patient like family and works tirelessly to provide the highest level of care and service."

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