Our Mission

    Empowering women, men, and couples everywhere to understand their fertility in order to have a child when and how it is wanted.


    Opionato believes that the approach to fertility should be proactive and personalized. We address the information gap between birth control and fertility clinics by providing unbiased expert fertility assessment and advice. We believe it is a basic human right to have access to top experts and their advice tailored to you no matter where you live in the world.

  • Opionato's Team

    Founder & CEO

    Maja Zecevic, PhD, MPH

    Maja created Opionato with herself in mind: that someone she wished she had during her own pursuit of motherhood.

    Maja thought she had it all: grew up in three different continents, pursued a career in cancer research, and worked with leading cancer institutions.

    When she met her Mr. Right, she started pursuing her dream of becoming a mother. But becoming pregnant turned out not to be easy. And trying to obtain the right advice at the right time from the right experts turned out to be time consuming, confusing, fragmented, and very stressful. Maja at that point realized what she wished she had: ongoing and anytime access to personalized and trusted advice that is proactive and actionable.

    Maja worked for more than a decade as a cancer scientist. She obtained her PhD degree in molecular cancer biology from the University of Virginia and her Masters in Public Health from Johns Hopkins University in the field of Cancer Prevention. She then was a Cancer Prevention Fellow at the National Cancer Institute in Washington, DC and at MD Anderson Cancer Center in Houston, TX.

    Maja subsequently moved to New York City to become the sole North American Editor for eight years for one of the world's most prestigious evidence-based medical journals-The Lancet. She then moved to San Francisco where she became a health advisor to leading Silicon Valley based academic institutions, philanthropic organizations, and private health entities.

    Maja currently serves as a reviewer for the prestigious peer-reviewed journal Fertility & Sterility published by The American Society of Reproductive Medicine.

    Maja truly believes that informed and empowered decision making maximizes the chance of a successful pregnancy when and how is desired.

    Read Maja's Fertility Journey

    Chief Health Officer

    Theresa Pittman, NP, MSN

    Theresa has been a fertility nurse practitioner for over thirty years. She has provided state of the art diagnosis, treatment, advice, and support in the field of reproductive medicine, gynecology, and obstetrics.

    Theresa has played a leading role in development of curriculum, standards, and protocols for fertility nurses. She has also been an author of a variety of peer-review articles and has served as creator, publisher and Editor-in-Chief of Reproductive Review journal that published review articles for nurses interested in the field of reproductive endocrinology. Theresa has frequently served as a lecturer at Stanford University, Palo Alto Medical Foundation, and as a speaker at the annual conferences of the American Society of Reproductive Medicine.

    Theresa is thrilled to use her multi-decade and multi-disciplinary fertility expertise in providing fertility guidance to anyone based anywhere.

    Read Why Theresa Joined Opionato

    Lead Designer

    Sony Atmadjaja

    Sony is a digital designer & art director with a deep love of the outdoors. She has been creating & designing interactive experiences for brands for 10+ years.

    Prior to Opionato, she spent 4 years designing, building and leading design at Postmates, and on-demand delivery platform based in San Francisco. Prior to that, she was a consultant at Pivotal Labs. Sony's design expertise include: iOS & Android Design, UI/UX, Product, Visual, Marketing, Branding & Logo, Marketing Strategy, and Social Engagement

    Alongside design, she likes to spend time taking photos, rock climbing, traveling, and hosting exceptional dinner parties.






  • One Mission. Two Generations

    “I was looking for a way to use my decades of experience to reach more people, in different locations and at various points in their fertility experience.”

    - Theresa

    "It is about time fertility moves from repair and reactive to proactive and preventive."

    - Maja

  • Advisors


    Oriane Chausiaux, PhD

    Although Oriane was told that she would not be able to conceive naturally, she managed to conceive naturally and become a mom to two young girls. She believes strongly in the value of offering unbiased, evidence-based advice to individuals and couples as early as possible.

    Oriane has 15 years of experience in the fertility space. She obtained her PhD degree from the University of Cambridge in England where she studied the molecular mechanisms involved in male infertility. Subsequently, Oriane founded the first digital health company in the fertility field: DuoFertility in 2007.

    Oriane is passionate to use her personal and professional experience in having anyone based anywhere be able to obtain the right expert fertility advice when desired and wished from the privacy of their homes.


    David Bill

    David is a Silicon Valley based serial entrepreneur with more than 25 years of technology leadership experience across a diverse range of startups and technology companies. Some of the companies he has been involved with include Spinner.com ($320M million AOL acquisition), ExactTarget (IPO, $2.5B Salesforce acquisition), and most recently Virta Health ($37M raised, reversing diabetes).

    David enjoys machine learning, scaling, and being part of socially impactful endeavors. He believes fertility outcome can be improved with the help from technology aiding the right fertility information to be received by who ever is seeking it no matter where they are based.

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