Dr. Fangyin Meng, MD, Ph.D, United States
     
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Reproductive Medicine
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Doctor Introduction

Fangyin Meng, MD, Ph.D, United States


Fangyin Meng, MD, PhD, is a skilled reproductive endocrinology and infertility specialist with her own private practice in Irvine, California.

 

Dr. Meng received her MD and PhD degree as an honored student from Peking University Medical School in Beijing, China, the best medical school in China. She got her PhD degree in genetics, specifically on human embryo genetics. She completed her OB/GYN residency training at Peking University First Hospital and the Albert-Einstein College of Medicine affiliated Bronx-Lebanon Hospital Center. She received the best resident award and surgical skill award when she graduated from the residency program. After her residency training, Dr. Meng completed her reproductive endocrinology and infertility fellowship training at Albert-Einstein College of Medicine.

 

Dr. Meng has broad interests in human reproductive medicine, which includes human embryo genetics, endometrial receptivity, and cryobiology. Dr. Meng started preimplantation genetic testing, egg cryopreservation, and endometrial receptivity window research in early 2000. She has authored and submitted dozens of abstracts while presenting her data at international and national meetings.

 

As a genetic expert, Dr. Meng has a passion for human genetic and epigenetic diseases, such as polycystic ovarian syndrome. Dr. Meng understands every disease has two different aspects: a genetic predisposition and environmental factors. Therefore, Dr. Meng promotes patient-centered treatment, considering all aspects of her patients, including physical, psychological, lifestyle, cultural, and emotional factors when developing effective treatment plans.

 

Recurrent implantation failure is another field Dr. Meng focuses on. She has multiple publications on endometrial receptivity research—another side of the implantation story besides good quality embryos. Through comprehensive evaluation of genetics, hormonal, immunological, and uterine factors, Dr. Meng has helped several difficult recurrent implantation failure patients succeed.

 

Dr. Meng firmly believes that your success is her success. She understands that every patient and couple are different, so she’s committed to listening to your story, so she can understand your story and help you succeed.

 

As a mom, she knows infertility impacts every aspect of your life, and she truly cares about your success and happiness!


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Location and Hours
113 Waterworks Way STE 110, Irvine, CA 92618
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  • Monday

    07: 30 - 16: 30

  • Tuesday

    07: 30 - 16: 30

  • Wednesday

    07: 30 - 16: 30

  • Thursday

    07: 30 - 16: 30

  • Friday

    07: 30 - 16: 30

  • Saturday

    07: 30 - 12: 00

  • Sunday

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    Featured Reviews
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    Aug 10, 2024
    Dr. Meng leads an excellent team of compassionate experts who helped us find hope and achieve a successful pregnancy! Before finding Dr. Meng and her team, we endured IVF treatment at two different clinics. Those experiences included four failed attempts and a heartbreaking miscarriage at seven weeks. By the time we found Dr. Meng, we were emotionally and financially exhausted and felt time slipping away, especially with my wife's 42nd birthday approaching. We were first drawn to Dr. Meng by the excellent reviews we found online. After our initial consultation, it was clear that the reviews were accurate. Dr. Meng's extensive knowledge and years of experience immediately reassured us that we had finally found the right person. Through expertise, attentiveness, and undeniably a little luck, Dr. Meng's careful work ensured successful implantation. Living in San Diego, we faced the challenge of traveling to Irvine for treatment, requiring substantial time and effort. Nevertheless, Dr. Meng's team went out of their way to accommodate our busy schedules and even arranged local blood tests to reduce frequent travel. Insurance issues are never easy, but Dr. Meng's team handled them with impressive diligence. Communication among us, the clinic, and our insurer was seamless, ensuring that we maximized our IVF benefits without added stress. Thanks to the outstanding guidance, patience, and compassion of Dr. Meng, Audrey, Isabella, Abby, and Ginny, we finally achieved our first successful pregnancy. We are overjoyed and eagerly anticipate the next chapter of our journey.
    Jul 5, 2024
    Dr. Meng is the best doctor I have ever met. Thanks to her help, my dream came true!
    Jul 4, 2024
    Dr. Meng is the most compassionate, data-driven, and thorough REI specialist we have met. She is innovative, stays current with the latest research, and most importantly, is dedicated to her patients. The small clinic feels highly personalized, and you never feel like just a number. We are deeply grateful that we found Dr. Meng and her team.
    May 4, 2024
    A very small clinic with only one doctor, two nurses, and one receptionist. It has no laboratory of its own and rents an outside operating room for egg retrievals and embryo transfers. Think carefully before coming. The doctor does not even understand the PGT-M process. She has too little experience and is not sufficiently professional. Do not assume that speaking Chinese makes communication easy; professional expertise matters most!
    May 3, 2024
    Both my friend and I had successful IVF with Dr. Meng's help. I highly recommend her, not only because she is kind. She is young and technically skilled in all aspects of IVF. She never exaggerates the possibilities, but she can provide solutions that help make your dream come true. Even after I graduated from IVF care, she continued answering many questions and giving me advice. Go speak with the doctor! 😊🫵
    Jan 22, 2025
    Dr. Meng and her team are highly professional, kind, and dedicated. From the initial egg retrieval to the final embryo transfer, Dr. Meng consistently provided meticulous care and expertise to achieve the best possible outcome. I was delighted to become pregnant after one transfer. I am very grateful to Dr. Meng and her team for their patient guidance and attentive care throughout the process, which gave me confidence and peace of mind.
    Jan 5, 2025
    Dr. Meng is highly professional and has extensive, cutting-edge knowledge. She is patient and understanding and always answers our questions promptly. Dr. Meng is highly responsible and provides an in-person consultation every time. The day before my egg retrieval, she examined me in both the morning and afternoon to determine the best time for the procedure. The nurses at Dr. Meng's clinic are also very helpful. They always respond promptly to my needs and encourage me during treatment. Thank you to Dr. Meng's clinic for helping our family achieve its dream!~
    Nov 13, 2024
    Dr. Meng is the best! In addition to being highly professional and warm, she has a great sense of humor and is always very confident. The team works efficiently. Lab results are always available the same day and communicated promptly. Audrey is the best person I have ever met at drawing blood. Elizabeth is also very helpful with insurance and payment requests.
    Nov 5, 2024
    Many thanks to Dr. Meng for her help and to the professional team for its service. Dr. Meng is highly skilled and has rigorous requirements for both treatment cycles and gestational carriers. Her responses and explanations are always timely, which eased our concerns about distance and cultural differences. So far, two gestational carriers have helped me through surrogacy. One recently gave birth to a lovely, healthy baby, and the other is due next April. Both became pregnant after their first transfer. I highly recommend Dr. Meng.
    Jun 24, 2025
    A friend introduced me to Dr. Meng. At our first consultation, she patiently and thoroughly explained the entire in vitro fertilization (IVF) process. She was not only professional but also genuinely kind, making me feel completely at ease throughout the process. During anxious and uncertain moments, she always offered emotional support and encouragement, which meant so much to me. From egg retrieval to embryo transfer, the entire treatment went very smoothly thanks to Dr. Meng’s expertise and her team’s careful coordination. Her team was also responsible, patient, and thorough, always answering my questions clearly and promptly. I am sincerely grateful to Dr. Meng and her team and feel very fortunate to have found them.
    Jul 24, 2025
    Excellent.
    Aug 8, 2025
    Dr. Meng and nurse Audrey are wonderful and a great fit for me. I like their personalities, clear communication, relaxed tone, humor, diligence, and, most importantly, excellent clinical skills. Dr. Meng always gives me clear advice and guidance. If you trust her 100%, you will get a positive result. Follow her lead and you will succeed. I value how well we communicate.
    Aug 6, 2025
    Before meeting Dr. Meng, I underwent IVF with another well-known doctor in Irvine. Although I greatly respected their experience, I began to feel that the treatment protocol was not right for me. The medication felt intense and did not seem to be adjusted much in response to my body. I felt physically unwell and hesitant to try again, so I looked for another approach. I spoke with almost every doctor I could see in Irvine, and only Dr. Meng explained the medication issues clearly and scientifically. I still remember her saying, "If you are willing to try another egg retrieval, I promise your body will not feel the way it did last time." That stayed with me. Ultimately, I did not undergo another retrieval because I was still afraid, but I decided to proceed with the two embryos I already had. Although neither was top quality, the transfer succeeded with Dr. Meng's help and support! This was what I had always hoped for. What impressed me most was Dr. Meng's genuine care. She is knowledgeable and highly skilled and also takes time to address questions and concerns other doctors might overlook. She is warm, funny, trustworthy, and truly cares about her patients. Dr. Meng was a blessing during my treatment. I am deeply grateful to have found her!
    Jul 26, 2025
    Dr. Meng is wonderful! She is always on time, performs every ultrasound herself, and carefully answers all my questions without ever making me feel rushed. I felt exceptionally well cared for throughout IVF. The staff are also very friendly and helpful. I am so glad I found her and highly recommend her to anyone undergoing fertility treatment.
    Dec 31, 2025
    Dr. Meng is very patient and highly skilled. Throughout treatment, she demonstrated exceptional professionalism, patience, and attention to detail. From the beginning, we felt we were in very capable hands. Every stage of treatment was handled precisely and confidently. All procedures went smoothly without discomfort. The procedure itself was very successful, with no complications, which reassured us and strengthened our trust in her expertise. The psychological and emotional support we received was just as important as the excellent medical care. We felt understandably nervous and anxious throughout IVF treatment. The doctor remained patient, calm, and reassuring, taking time to explain everything clearly and answer our questions. Whenever we felt stressed or uncertain, she promptly provided the support and guidance we needed.
    Dec 21, 2025
    With Dr. Fangyin Meng's help, I now have three children. My first egg retrieval at another clinic was disappointing. I was referred to Dr. Meng, and she helped me produce eight embryos in a single cycle. I was overjoyed. She is an excellent doctor with a great sense of humor. If you need this type of care, she is a doctor you can trust completely.
    Jan 14, 2026
    I came to this clinic for endometriosis treatment after specifically calling to confirm that they treated the condition, as advertised on their website. Their staff confirmed that they did. Instead, I spent hundreds of dollars on a brief consultation, only to be told afterward that they do not actually treat endometriosis but could freeze my eggs, which was a completely different service I had not requested. During the consultation, they performed an ultrasound and concluded that I did not have endometriosis at all. I was extremely disappointed that this supposed "specialist" said nothing was wrong. I later saw another doctor and learned that I did, in fact, have widespread stage IV endometriosis! If they do not truly specialize in treating endometriosis, they should not list it as a treatment on their website.
    Apr 13, 2026
    The clinic is small, with only one doctor, two nurses, and one receptionist. The receptionist is kind and polite. One nurse cannot draw blood; after several unsuccessful attempts, she blamed the patient for sitting incorrectly. The other nurse is very rude and raises her voice or even shouts if she dislikes what a patient says.
    Jun 24, 2025
    A friend referred me to Dr. Meng. During our first consultation, Dr. Meng patiently and thoroughly explained the entire IVF process. She was not only professional but also sincere and kind, making me feel completely at ease throughout. During anxious and uncertain moments, she always provided emotional support and encouragement, which meant a great deal to me. From egg retrieval to embryo transfer, treatment went very smoothly thanks to Dr. Meng's expertise and her team's careful coordination. Her team was also highly responsible and patient, always answering my questions clearly and promptly. I sincerely thank Dr. Meng and her team and feel very fortunate to have found them.
    Jan 22, 2025
    Dr. Meng and her team are highly professional, very kind, and deeply dedicated. From the initial egg retrieval to the final embryo transfer, Dr. Meng consistently provided meticulous care and expertise to maximize the chance of success. I am delighted that I became pregnant after one transfer. I am very grateful to Dr. Meng and her team for their patient guidance and attentive care throughout the process, which gave me confidence and reassurance.
    Jan 5, 2025
    Dr. Meng is highly professional and has extensive knowledge of the latest advances. She is patient and empathetic and always answers our questions promptly. Dr. Meng is very responsible and conducts every consultation in person. The day before my egg retrieval, she examined me every morning and afternoon to determine the optimal time for the procedure. The nurses at Dr. Meng's clinic are also very helpful. They always responded promptly to my needs and encouraged me during treatment. Thank you to Dr. Meng's clinic for helping our family achieve its dream!~
    Nov 13, 2024
    Dr. Meng is the best! In addition to being highly professional and warm, she is humorous and always very confident. The team works efficiently. Laboratory results are always available the same day and communicated promptly. Audrey is the best person I have ever met at drawing blood. Elizabeth was also very helpful with insurance and payment requests.
    Nov 5, 2024
    I am very grateful for Dr. Meng's help and the service provided by her professional team. Dr. Meng is highly skilled and has rigorous requirements for each cycle and gestational carrier. Her responses and explanations are always prompt, helping ease our concerns about distance and cultural differences. So far, two gestational carriers have helped me. One recently gave birth to a lovely, healthy baby, and the other is due next April. Both became pregnant after the first transfer. I highly recommend Dr. Meng.
    Jul 24, 2025
    Excellent.
    Aug 8, 2025
    Dr. Meng and nurse Audrey are wonderful and a great fit for me. I like their personalities, clear communication, relaxed tone, humor, diligence, and, most importantly, excellent clinical skills. Dr. Meng always gives me clear advice and guidance. If you trust her 100%, you will get a positive result. Follow her lead and you will succeed. I value how well we communicate.
    Aug 6, 2025
    Before meeting Dr. Meng, I underwent IVF with another well-known doctor in Irvine. Although I greatly respected their experience, I began to feel that the treatment protocol was not right for me. The medication felt intense and did not seem to be adjusted much in response to my body. I felt physically unwell and hesitant to try again, so I looked for another approach. I spoke with almost every doctor I could see in Irvine, and only Dr. Meng explained the medication issues clearly and scientifically. I still remember her saying, "If you are willing to try another egg retrieval, I promise your body will not feel the way it did last time." That stayed with me. Ultimately, I did not undergo another retrieval because I was still afraid, but I decided to proceed with the two embryos I already had. Although neither was top quality, the transfer succeeded with Dr. Meng's help and support! This was what I had always hoped for. What impressed me most was Dr. Meng's genuine care. She is knowledgeable and highly skilled and also takes time to address questions and concerns other doctors might overlook. She is warm, funny, trustworthy, and truly cares about her patients. Dr. Meng was a blessing during my treatment. I am deeply grateful to have found her!
    Jul 26, 2025
    Dr. Meng is wonderful! She is always on time, performs every ultrasound herself, and carefully answers all my questions without ever making me feel rushed. I felt exceptionally well cared for throughout IVF. The staff are also very friendly and helpful. I am so glad I found her and highly recommend her to anyone undergoing fertility treatment.
    Dec 31, 2025
    Dr. Meng is highly skilled and very patient. Throughout treatment, she showed exceptional professionalism, patience, and meticulous care. From the beginning, we felt we were in very capable hands. Every treatment step was handled precisely and confidently. All procedures went smoothly and caused no discomfort. The surgery was successful and free of complications, which reassured us and strengthened our trust in her expertise. Beyond the excellent medical care, the psychological and emotional support was equally important. We were understandably anxious throughout IVF treatment. The doctor remained patient, calm, and reassuring, took time to explain everything clearly, and answered our questions. Whenever we felt stressed or uncertain, she provided the support and guidance we needed.
    Dec 21, 2025
    With Dr. Meng Fangyin's help, I now have three children. My first egg retrieval at another clinic was disappointing. After a recommendation, I found Dr. Meng, who helped me produce eight embryos in a single cycle. I was overjoyed. She is both highly skilled and humorous. If you need fertility care, she is a doctor you can fully trust.
    Jan 14, 2026
    I came to this clinic for endometriosis treatment after calling specifically to confirm that they treated the condition as advertised on their website. Their staff confirmed that they did. I then spent hundreds of dollars on a brief consultation, only to be told afterward that they did not actually treat endometriosis but could freeze my eggs, which was an entirely different service I had not requested. During the consultation, they performed an ultrasound and concluded that I did not have endometriosis at all. I was extremely disappointed that this supposed "expert" said nothing was wrong. I later saw another doctor and learned that I did in fact have widespread stage IV endometriosis! If they do not genuinely have expertise in treating endometriosis, I do not think they should list it as a treatment on their website.
    Apr 13, 2026
    The clinic is small, with one doctor, two nurses, and one receptionist. The receptionist is kind and polite. One nurse does not know how to draw blood. After several unsuccessful attempts, she blamed the patient and said the patient was sitting incorrectly. The other nurse is very rude and raises her voice or even shouts if she does not like what a patient says.
    Apr 26, 2026
    Apr 13, 2026
    Small clinic with one doctor, 2 nurses, and one front desk staff member. The woman at the front desk was kind and respectful. One nurse did not know how to draw blood and tried several times without success, then blamed the patient's sitting position. The other nurse was simply rude and would raise her voice and yell if she did not like what the patient said.
    Jul 31, 2025
    At thirty-seven, I began a long and uncertain IVF journey. I went to leading fertility centers in the Bay Area, San Diego, and Los Angeles, undergoing multiple cycles, countless injections, and repeated failed embryo transfers filled with hope and heartbreak. Eventually, I stopped believing I could become a mother. Then I entered Dr. Meng's office in Irvine. A friend had called her a "100% goddess," and I understood why. Dr. Meng brought more than knowledge: she had strategy, intuition, and rare grace under pressure. My ovarian reserve was low, but she was undaunted. She carefully reviewed my AMH, AFC, E2, and FSH and designed a dual-stimulation protocol with blastocyst culture and PGT-A. She did not offer false hope, but calm, focus, and steady confidence. That alone restored my belief in motherhood. She listened wholeheartedly. When I arrived with anxious questions and online "tips," she answered with science and kindness, cutting through the noise. One evening during ovarian stimulation, a nurse came to my home to administer hCG and leuprolide. She did not have to, but she came and was so thoughtful that I felt valued, not simply processed. During this cycle, we had to transfer embryos from a facility that closed without warning. Dr. Meng's team handled everything perfectly, carefully checking every provider and securing every link in the chain. As a family using a surrogate, we transferred the embryo to our beloved surrogate. Dr. Meng treated her with the same respect and care she gave us. We were not statistics; under her care, we were cherished like roses. The transfer was precisely coordinated. From hormones to follow-up care, every detail was rigorous, efficient, and humane. Appointments ran on time. Responses were prompt. There was no emotional turbulence, only calm, steady trust. Late in the pregnancy, during the holidays, we received a vague and frightening report. Dr. Meng responded immediately. She reviewed the data line by line, called us, and gently said, "You can breathe now." That was not medicine; it was protection. Dr. Meng has now built a talented team of women. They are strong, perceptive, and kind. Together, they are extraordinary. We now have two lovely children. They are the light at the end of a very long road. Just the other day, my older son asked, "Mom, can we have another one?" "Maybe," I said. He shouted, "Yay! A new puppy!" I laughed until I cried. This is family. This is love. And I will cherish this memory forever.
    Aug 27, 2020
    Dr. Meng is the best healthcare professional I have worked with! She goes above and beyond to communicate with patients. I cannot imagine going through such a stressful treatment process with another doctor!
    Aug 28, 2020
    Dr. Meng is the best 👍 and very friendly. During seven years of marriage, we tried unsuccessfully to have a baby. A year ago, we saw Dr. Meng's lecture and contacted her. We asked many questions, and she patiently answered each one, giving us an accurate understanding of IVF and genetic testing. Because of the pandemic, we decided to use the break to prepare for transfer. Dr. Meng recommended preconception preparation, sent a diet and exercise plan tailored to me, and asked me to lose 20 pounds before scheduling another visit. Yesterday I tested positive for pregnancy 🤰 It is a miracle! I succeeded simply by losing weight.
    Oct 20, 2022
    Dr. Meng is professional, efficient, and caring. Her team is also friendly and professional. The nurses are very attentive, and the front desk is easy to communicate with. With the help of Dr. Meng and her team, we will soon welcome a new family member. I hope more people receive Dr. Meng's help and make their dreams come true!
    Mar 3, 2024
    Dr. Meng is a highly intelligent doctor with very accurate diagnoses. She is also very kind and compassionate.
    May 4, 2024
    A very small clinic with only one doctor, two nurses, and one receptionist. It has no blastocyst culture laboratory, and outside operating rooms must be rented for egg retrievals and transfers. Think carefully before coming. The doctor does not even understand the PGTM process and lacks experience and professionalism. It was renamed from California dream fertility center to fangyin meng MD! Reviews can be manipulated! Think twice before coming!

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