Dr. Lauren Sundheimer, United States
     
5.0
Consultations 54
Reproductive Medicine
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Doctor Introduction

Dr. Lauren Sundheimer, United States


Lauren W. Sundheimer, MD, MS, FACOG, is double board-certified in obstetrics and gynecology and reproductive endocrinology and infertility. She is passionate about applying science to help patients achieve their family-building goals. An Orange County native, Dr. Sundheimer developed a strong interest in women's health while attending the UC Irvine School of Medicine. She completed her obstetrics and gynecology residency at UCLA Medical Center and her reproductive endocrinology and infertility fellowship at UCLA. She holds bachelor's degrees in biochemistry and political science from UC San Diego, where she also completed a competitive combined bachelor's and master's program in biology. Dr. Sundheimer has conducted extensive reproductive health research throughout her medical career, while her primary focus remains providing excellent clinical care.

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Location and Hours
4321 Birch St, Newport Beach, CA 92660, United States
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  • Monday

    07: 00 - 15: 30

  • Tuesday

    07: 00 - 15: 30

  • Wednesday

    07: 00 - 15: 30

  • Thursday

    07: 00 - 15: 30

  • Friday

    07: 00 - 15: 30

  • Saturday

    Closed

  • Sunday

    Closed

    • Closed Now
    Affiliated Clinics
    Kindbody - Newport Beach, United States
         
    • Reproductive Medicine
    Hours: 07: 00 - 15: 30
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    5.0

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    Featured Reviews
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    Mar 22, 2025
    Kind body mixes, professional care with personal well-being. They take the time to explain everything and treat each patient with kindness and care
    Mar 22, 2025
    Very welcoming and KIND staff
    Feb 28, 2025
    Honestly, if my employer had not provided coverage through Kindbody, I would never have walked into this clinic. I am so grateful to everyone at KB Newport Beach for helping my husband and me achieve our dream of becoming parents. We are now twenty weeks along and cannot wait to meet our daughter! Dr. Sundheimer and her team are amazing, compassionate, and caring people. They are with you at every step, and the staff are always there when you need them. We had to undergo several embryo transfers before succeeding, but I am glad we persisted because Dr. S listens to your concerns and provides the best treatment. I highly recommend them if you are growing your family!
    Feb 28, 2025
    I highly recommend this team. Dr. Sundheimer and her team have been extremely knowledgeable, helpful, and communicative from day one. For the first time in our fertility journey, I felt that my care team was as invested in the process as I was. I only wish I had found them a year ago!
    Feb 27, 2025
    I highly recommend this clinic. Every staff member is truly invested in your care. Dr. Sundheimer, Natalie, Katie, and everyone at the clinic are wonderful. I froze embryos here, and they talked me through the entire process, communicated clearly during the injections, and put us at ease during the retrieval. I am very grateful for their care and would certainly recommend them to anyone.
    Apr 20, 2025
    Their communication with patients in San Diego is very poor. They are not trustworthy. It is frustrating to see that others receive such good communication.
    Mar 27, 2025
    Although my husband and I have experienced many ups and downs on our fertility journey, Kindbody has been by far the best support system and the best at identifying the underlying cause needed to begin a healthy pregnancy. I cannot wait to continue this journey with Kindbody Newport Beach ❤️
    May 7, 2025
    Everything was personalized to my experience. All the staff were warm and pleasant!
    Apr 28, 2025
    Thank you to Dr. Sondheimer and her team for making our miracle happen. After years of infertility, their care, ongoing support, and follow-up on every one of our millions of questions were encouraging. Special recognition to Kiana! She was a ray of sunshine during this frightening journey. She was always cheerful and encouraging, explained everything to me, and was the best throughout the process. Baby is due in October 2025!
    Apr 22, 2025
    I found Kindbody through my employer's insurance. They were very helpful and attentive in providing information about our family-building options.
    Jul 17, 2025
    Jul 16, 2025
    My experience freezing my eggs at this clinic was extremely frustrating. From the beginning, the doctor appeared only for the initial consultation. After that, I never saw or heard from the doctor again. Whenever I had a question or concern, I was passed to a different nurse who seemed unfamiliar with my case and where I was in the process. I was repeatedly told, ‘We will ask the doctor and get back to you,’ but over two months I never received any follow-up. Communication was chaotic and completely disorganized. This clinic performs egg retrievals only two days each month. It was obvious that they squeeze everyone into this short window to maximize profit, regardless of whether a patient’s body is ready. That is not patient care; it is exploitation. What happened during my retrieval was even more unacceptable. From 24 follicles, they froze only 4 eggs. Every specialist I consulted afterward said this clearly reflected a clinic error. Whether it was poor timing, a flawed protocol, or simple negligence, the result was devastating. Worse still, they scheduled a post-retrieval phone consultation one week later, but the doctor never appeared. The explanations I received were inconsistent, vague, and frankly made no sense. For many people, this is a major life decision, yet the clinic handled my case carelessly, hastily, and as though profit came first. We spent nearly $20,000 on a poorly managed process with no accountability. I initially chose this clinic because of its positive reviews, but now I question whether they are genuine because my experience was a disaster. Think carefully before choosing this clinic. If you want thoughtful, personalized, accountable care, this clinic is not for you. The doctor disappears after the first visit, leaving you confused and unsupported and, in my case, heartbroken.
    Jul 1, 2025
    Dr. Sundheimer, Natalie, and their team are amazing! They are kind, responsive, and extremely efficient. My husband and I are now expecting! Whenever we had questions, the clinical team was happy to answer them all and put us at ease. They were patient and thorough, making us feel fully supported. The pharmacy they use was also very friendly, with fast and convenient medication delivery. I am so glad we chose Dr. Sundheimer and the Newport team!
    Jun 26, 2025
    I love the Kindbody team and Dr. S. They were wonderful throughout the process, and I highly recommend them!
    Jul 19, 2025
    Extremely disappointing experience! My experience with Dr. Lauren and her team was profoundly frustrating and physically and emotionally exhausting. The warning signs were clear from the beginning, and I regret not heeding them. The initial consultation lasted less than 15 minutes, and Dr. Lauren focused almost entirely on selling me an egg-freezing package. Instead of taking time to evaluate my situation, she promoted their “multi-cycle” plan. I should have left, but I did not, and unfortunately I fell into their trap. During the actual procedure, only 50% of my eggs were retrieved. During a 15-minute follow-up call, she returned to sales mode and tried to convince me to undergo another cycle. When I questioned the poor outcome, she said the other eggs were “not mature.” If they were immature, why not give them an opportunity to mature in vitro, as some qualified clinics do? Worse, nearly 60% of the retrieved eggs were lost, leaving me with only 3 frozen eggs from 19 follicles. By any standard, this outcome is completely unacceptable. A competent embryology team would handle every egg carefully, try to rescue immature eggs when possible, and work to support the patient. That clearly did not happen in my case. Even worse, their financial team contacted me again after the cycle ended and tried to sell me another round of treatment. This was upsetting and felt entirely transactional, as though I were merely a source of revenue rather than a patient undergoing an emotional and medical journey. Dr. Lauren's clinic schedules everything around its calendar, not yours. They perform procedures only two days each month, so your cycle must be adjusted to their limited availability. In my case, I was forced to have the procedure the next day solely to fit their schedule rather than my biological response or ideal timing. Reproductive medicine should not work this way. Frankly, I do not understand how this clinic wins awards!
    Aug 21, 2025
    I am writing this review on behalf of my wife. My wife chose this center for egg freezing because of her employer's benefits program. From the beginning, it was clear to us that this was not the right place for such a delicate and critical procedure. This center prioritizes profit over patient care. These were the problems we faced: 1. Very little physician involvement—Dr. Lauren met with us only twice, for about 15 minutes each time. The first meeting was at the start of the freezing process, when she was supposed to create a protocol based on my wife's history of migraines and medication use. After that, she was largely unavailable. Even the nurses could not clearly answer key questions, such as whether certain medications should be continued. The second brief meeting occurred after the freezing process, when she did not meaningfully explain why the egg freezing rate was far below normal or why the outcome was so poor. 2. Inadequate monitoring—Egg freezing requires careful monitoring, usually every one to two days. During the cycle arranged by this center, my spouse had only three examinations in ten days, but we were charged the full amount. 3. Premature procedure—The retrieval proceeded even though the doctor knew not all the eggs were mature. This caused many eggs to be wasted. Why? Because the center values money over results. The proper approach would have been to wait for the eggs to mature before scheduling retrieval. However, rescheduling would have cost them money, so they proceeded anyway. 4. Financial misconduct—At first, the financial team told us we had to choose between employer benefits and insurance rather than use both. We agreed to use the benefits. However, they appear to have charged both the benefits plan and our insurance company. Because there was no phone number and communication was only through online chat, it took weeks to receive a response. When they finally replied, the answer was essentially, ‘That is how the process works.’ Yet their own website clearly describes the financial coverage as including all tests and procedures. We repeatedly requested an itemized bill but never received one. Recommendation: Stay away from this center. They do not care about patients, only maximizing revenue.
    Aug 19, 2025
    The Kindbody team was very warm and friendly, communicated well, and gave us excellent support throughout the process. The doctors and nurses were professional and willing to answer any questions. Their portal was easy to use and well organized. The one problem I encountered was the billing department. They overcharged or duplicated charges several times. I asked them to review every bill carefully and checked all the contracts myself, which is how I found every error, so I strongly recommend that every patient do the same. Apart from billing, the staff and medical team were wonderful, and overall my experience at Kindbody was excellent.
    Sep 5, 2025
    Working with Dr. Sundheimer and her team was an amazing experience. I felt discouraged after three failed IUIs. They helped me regain confidence and supported me throughout the process. IVF is physically and emotionally exhausting, and Dr. Sundheimer and her team were incredibly supportive at every stage. I will always be grateful for my son. With help from the NB office and San Diego, I achieved a dream I had held since childhood.
    Oct 2, 2025
    Dr. Sundheimer and her team were very kind and informative throughout the egg-freezing process. The clinic keeps you updated through its portal and offers after-hours assistance if needed. Parking is convenient. The entire team is warm, welcoming, and helpful, ensuring you feel at ease.
    Sep 19, 2025
    Nov 22, 2025
    My infertility journey was not easy, but I am deeply grateful to Kindbody for giving my husband and me the chance to become parents. I underwent six egg retrievals and two frozen embryo transfers. When seeking infertility treatment, any clinic or doctor can only offer you a chance. Kindbody gave my husband and me that chance. IVF never comes with a guarantee of success, but Kindbody Newport was a steadfast source of support throughout our journey. From the receptionists, medical assistants Jo and Melissa, ultrasound technician Kiana, nurses Aphril and Katie, and physician assistant Natalie to Dr. Sundheimer, every staff member was warm, thoughtful, and attentive. Whether I received good news, bad news, or was simply there for bloodwork, they consistently showed that they cared. I cannot express how grateful I am. My years-long journey with Kindbody was not easy, but it made me stronger and grateful for every opportunity—the frozen embryos—that allowed my husband and me to become parents.
    Nov 13, 2025
    I am incredibly grateful for Dr. Sundheimer's team at Kindbody. Thanks to them, I now have a healthy, thriving little blueberry. 🩷 They were responsive, knowledgeable, kind, and patient with my countless questions. Special thanks to Natalie and Kiana, whose warmth, patience, and humor made every visit pleasant.
    Dec 4, 2025
    My experience at Kindbody Newport Beach was excellent from start to finish. The clinic was welcoming, organized, and reassuring. The front desk made check-in and scheduling easy, while the medical assistants were consistently kind and attentive. I especially appreciated the ultrasound team’s care, professionalism, and clear explanations. The warm staff and easy digital platform made everything smoother than expected. I recommend Kindbody Newport Beach to anyone on a fertility journey.
    Dec 25, 2025
    My husband and I are deeply grateful to Kindbody, especially Dr. Sundheimer, Dr. Kathiresan, and the wonderful teams at the Santa Monica, San Diego, and Newport Beach clinics. Our first IVF treatment succeeded with the first transfer, and we welcomed our wonderful baby boy. We recently completed a second embryo transfer and are now pregnant again, once more on the first attempt and without complications. The doctors are thorough and caring, and they make sure everything is ready before proceeding to the next step. When we began our IVF journey, the Santa Monica clinic was the closest location, although it was about a three-hour drive. We never regretted the trip because the care was absolutely worth it. This time, the excellent coordination among Kindbody locations made everything much easier—our embryo transfer took place in Santa Monica, while our laboratory testing and ultrasounds were conveniently completed near our home in San Diego. We also want to give special thanks to Julie and Gabby at the San Diego clinic and Natalie and Katie at the Newport Beach clinic. As our fertility journey neared its end, Julie and Gabby surprised us with a thoughtful gift, warm wishes, and a beautiful card filled with kind messages that we will always treasure. The entire team is professional, thoughtful, and responsive. Kindbody truly works miracles, and we highly recommend them to anyone considering IVF. They are amazing!
    Jan 25, 2026
    Mar 5, 2026
    We had a wonderful experience at Kindbody and are so grateful for the care we received. Dr. Sundheimer and the nurses we worked with were incredibly warm and supportive. The clinic itself was always clean, bright, and welcoming, which made every visit a positive experience. We highly recommend this clinic to anyone on their fertility journey.
    Jan 17, 2026
    Everyone was kind, welcoming, and helpful during my egg retrieval. They were knowledgeable and always available to answer my questions. Overall, they made the entire process very smooth.
    Mar 12, 2026
    I would never recommend this clinic or any Kindbody clinic. I had already been told that they operate more like a business center than a proper medical practice. Unfortunately, my insurance works only with Kindbody, so I had no choice. Dr. Sandhimer is kind but seems inexperienced. She follows the textbook rigidly without investigating potential problems, which led to a failed IVF cycle. Even after the failure, she repeated the same protocol without any adjustments. One of the clinic's biggest problems is that egg retrievals are performed only on designated dates. Instead of adapting to your natural cycle, they make your cycle fit their schedule. For example, injections normally begin on day 2 of the menstrual cycle, but here you may have to wait until day 10 solely to match their retrieval dates. By then, your body may be approaching ovulation around day 15, so they increase medication to suppress ovulation. This may negatively affect egg quality. I had two failed IVF cycles at this clinic. I later became pregnant with another doctor who prescribed completely different medication doses. Based on my experience, I would not recommend this clinic to anyone. Patients feel more like numbers in a system than individuals receiving personalized care. The only positive is that the clinic staff and ultrasound technologists are friendly and helpful. That is the sole reason I gave one star; otherwise, I would have given zero.
    Jun 14, 2026
    Kindbody的团队非常出色。诊所的组织架构严谨专业。整个过程中，我都感到自己受到了尊重、倾听和关怀。我非常庆幸自己选择了这家机构来陪伴我走过这段重要的旅程。
    Jun 12, 2026
    尊敬的Kindbody管理层：我们于2026年6月9日收到Kindbody的电子邮件，通知我们将把所有冷冻样本从加利福尼亚州运往马萨诸塞州。当天，我拨打了通知中提供的电话号码进行跟进，被告知运输最早将于下周开始。你们可能只给了我们几天时间寻找替代实验室来接收所有样本，否则所有样本都将被运送到全国各地。你们的员工表示他们对此流程一无所知，也无法提供任何额外信息或书面保证，例如样本是否会在Kindbody实验室保存，直到我找到本地的替代实验室，或者任何关于可能转移的具体时间表。这种情况令人无法接受，也令人非常不安。请立即安排贵公司的法律顾问或一位了解情况的员工与我联系，以便我们能够进行有效的沟通并获得书面保证，否则我们将被迫采取更积极的措施来保护我们的样本。贵公司如此对待患者，尤其是在如此重要和敏感​​的样本面临风险的情况下，实在令人难以置信。 编辑：针对Kindbody的回复，您再次未能保证我们提出的将样本转移到我们选择的实验室的请求能够/将会得到满足，反而继续向我们推荐一家位于美国另一端的实验室。我希望您能私下联系我进一步讨论，因为我已经多次联系您，但得到的回复却寥寥无几。我已经拨打了您提供的总机号码。看来您的所有员工都非常困惑，而且几乎没有得到任何指导。再次重申，请您的法律顾问或一位了解情况的员工立即与我联系，以便我们能够进行一次有效的对话并获得书面保证，否则我们将被迫采取更进一步的措施来保护我们的样本。
    Jun 27, 2026
    我们无比感激桑德海默医生和纽波特海滩诊所的全体医护人员，是他们帮助我们实现了为人父母的梦想。 我们全程都信任她的指导，正是因为她的专业和支持，我们才得以拥有了可爱的女儿。 在整个试管婴儿治疗过程中，她总是让我感到安心和放松。她的每一次解释都亲切、详尽、令人放心，在每一次治疗过程中，我都感受到了她无微不至的关怀。 我还要感谢诊所的所有工作人员。每次我去诊所，每个人都热情友好地接待我。他们的同情和鼓励对我意义非凡，帮助我克服了试管婴儿治疗过程中身心上的种种挑战。 选择纽波特海滩诊所是我们做过的最正确的决定之一。我们衷心感谢每一位参与我们这段旅程的人。我们期待着再次见到你们，期待着我们准备好迎接第二个宝宝的到来！ 由衷地感谢你们！
    May 12, 2026
    We had a very special experience with Dr. Sondheimer and the entire Kindbody team. IVF is an emotional roller coaster, but at Kindbody I always felt fully supported and treated with great respect, kindness, and understanding. The staff promptly answered every question or concern, and everyone welcomed me with a smile at each appointment. I am thrilled to share that my husband and I are expecting our first baby, thanks to the guidance of Dr. Sondheimer and everyone at Kindbody!
    Mar 6, 2026
    We encountered many hurdles during our IVF journey but Dr. Sundheimer and her staff always remained encouraging and customized my protocol to work with my unique situation. We had a great result and felt supported all along the way. The staff in the San Diego office are also rock stars and really care about your experience. Highly recommend this clinic!
    Mar 26, 2026
    Dr. Sundheimer and her team are amazing! IVF is emotional and stressful, but she and the Newport Beach staff made it much easier. Everyone was warm and friendly and gave me genuine support at every step. My protocol was always clearly explained and carefully tailored to my situation, which I believe was key to my positive outcome. I always felt informed, cared for, and confident in the plan. We are deeply grateful for their care and already look forward to returning in the future for our second baby!
    Jul 28, 2025
    My egg-freezing experience with Dr. Lauren and her team was extremely frustrating and disappointing. From the start, the doctor appeared only for the initial consultation. I never saw or heard from her again. Every time I had a question, I was passed to a different nurse, and no one seemed familiar with my case or knew where I was in the process. I was always told, "We will ask the doctor and get back to you," but no one ever followed up. Communication was chaotic, disorganized, and extremely dismissive. If you are looking for supportive, accountable, and professional care, this is absolutely not the place. Once they take your money, the doctor disappears and communication stops completely, leaving you confused and isolated. I was devastated. Think carefully before entrusting such an important life decision to them.
    Nov 22, 2025
    My infertility journey was not easy, but I am deeply grateful to Kindbody for giving my husband and me the chance to become parents. I underwent six egg retrievals and two frozen embryo transfers. When seeking infertility treatment, any clinic or doctor can offer only an opportunity. Kindbody gave my husband and me the opportunity to become parents. IVF can never guarantee success, but Kindbody Newport remained a steady source of support throughout our journey. From the receptionists, medical assistants Jo and Melissa, ultrasound technician Kiana, nurses Aphril and Katie, physician assistant Natalie, and Dr. Sundheimer, every staff member was dedicated, thoughtful, and attentive. Whether I received good news, bad news, or was simply having blood drawn, they consistently showed that they cared. Words cannot express my gratitude. The years I spent with Kindbody were not easy, but they made me stronger and grateful for every opportunity, including our frozen embryos, that allowed my husband and me to become parents.
    Dec 3, 2025
    We are immensely grateful to this exceptional clinic for helping us welcome our sweet baby boy on November 24. After a long and challenging fertility journey, we finally brought home the most precious gift, and it would not have been possible without this outstanding team. Special thanks to Natalie, Kiana, Katie, Aphril, Tabitha, Melissa, and Joanna. Through countless follow-ups, ultrasounds, and blood draws, they showed endless empathy, patience, and care. Their warmth, reassurance, and genuine attention made even the hardest days bearable. And of course, thank you to Dr. Sundheimer, who is truly exceptional. After two egg retrievals and one transfer, she helped us bring this miracle into the world. Her expertise, warmth, and unwavering dedication meant more to us than words can express. This clinic truly felt like home. We visited often during fertility treatment, and the kindness, professionalism, and care of every team member made us feel welcome. They guided us through one of the most emotional periods of our lives and helped us feel hopeful, reassured, and in capable hands. We highly recommend this team. They helped us fulfill our dream of becoming parents, just in time for Thanksgiving, and we will be forever grateful.
    Nov 10, 2025
    Dr. Sondheimer and her team are kind, warm, and encouraging. They communicate well and provide excellent care. I felt my treatment was tailored to me and that my input was fully considered. If I need help becoming pregnant in the future, I would definitely choose Dr. Sondheimer again. I initially went to another fertility clinic but left because I felt they had no specific treatment plan or direction for me and were not well organized. I am very glad I ultimately chose Dr. Sondheimer.
    Aug 15, 2025
    Dr. Sundheimer is amazing! She is extremely knowledgeable, and from the moment we transferred to her care, my husband and I felt informed, comfortable, reassured, and optimistic. We had a wonderful experience at Kindbody NB and highly recommend Dr. Sundheimer and her team!
    Apr 16, 2025
    We are very grateful to Dr. S and the entire Kindbody team. From the beginning of our pregnancy journey, she has been a steady source of support, expertise, and compassion. She is not only a knowledgeable and attentive doctor, but also a true advocate—constantly encouraging us, guiding us clearly through each stage, and helping us feel empowered along the way. Through the ups and downs, Dr. S always ensured that we felt seen, heard, and cared for. Her warmth, patience, and genuine commitment to our journey made all the difference, and we are deeply grateful that she helped us continue moving forward. We feel fortunate to have her by our side. Baby due in fall 2025!
    Jul 6, 2023
    I underwent multiple fertility treatments in Korea, where the clinical environment affected my physical and mental well-being. I even faced complications such as endometrial cancer. When I came to the United States for the final stage of my surrogacy journey, however, I met Dr. Sundheimer at Kindbody. And guess what? At age 42, I finally created two euploid embryos! Dr. Sundheimer was a constant source of courage and provided excellent care and support, especially during the challenging egg retrieval process. I cannot thank you enough, Dr. Sundheimer!

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