Welcome to our new site! Hiriskob.com is now UltrasoundOB.com

Your journey, our expertise

Maternal fetal medicine
at its finest

Meeting the needs of pregnant women, both high and low risk, in the Los Angeles area.

Dr. Roy Mansano Maternal Fetal Medicine Prenatal specialist Ultrasound OB
Pregnant woman with fetal monitoring OB Ultrasound image for high risk pregnancy and fetal monitoring

Offering total prenatal care for over 20 years

Our dedicated team of practitioners specializes in ultrasound, genetic testing, and preconception counseling. With cutting-edge tech and a compassionate team, we provide comprehensive services for expectant parents, ensuring optimal health outcomes for mother and baby through advanced imaging and personalized care at our two convenient locations in Tarzana and Thousand Oaks.

Convenient Scheduling

Experienced Specialists

Patient First

Featured Services

Personalized care from preconception to birth

We provide individuals and couples with tailored guidance and cutting-edge technologies to optimize their health, monitor fetal development closely, and make informed decisions for a healthy pregnancy journey.

Pregnancy test and Obstetric OB Ultrasound for fetal monitoring and prenatal care

Preconception Counseling

Our preconception counseling offers vital guidance for individuals and couples, optimizing health for pregnancy preparation.

An OB fetal monitoring image for high risk pregnancy and fetal complications

Advanced Prenatal Diagnosis and Fetal Care

We employ cutting-edge technologies to monitor fetal development closely, ensuring the best possible outcomes for both mother and baby.

Pregnant family who need genetic counseling for prenatal care
Genetic Screening

We empower expectant parents with the knowledge to make informed decisions throughout their pregnancy journey.

Obstetric OB Ultrasound imaging of pregnancy with fetal monitoring to assist in prenatal care
Trimester Anatomical Surveys

As experts in our field, we provide 1st, 2nd, and 3rd-trimester ultrasounds to assess fetal growth and detect any abnormalities.

Trusted by the best in Southern California Fetal Medicine
Our Medical Services

We're committed to providing state of the art care

Preconception counseling

Preconception counseling optimizes partner health pre-pregnancy for best outcomes. It addresses medical history, lifestyle, genetics, nutrition, and environmental factors, enhancing fertility, reducing complications, and promoting family well-being.

Advanced prenatal diagnosis and fetal care

Adv. prenatal dx & fetal care use tech & interventions for early fetus issue detection. Includes imaging, genetic tests, & may involve amniocentesis, CVS, ultrasound, or in utero treatments to optimize baby & mother outcomes, supporting families.

Genetic Screening

Pregnancy genetic screening offers personalized counseling & early detection for expectant parents, assessing fetus risks due to factors like age or family history.

First, second, and third trimester anatomical survey

1st, 2nd, & 3rd-trimester ultrasounds assess fetal growth & detect abnormalities at 12-14, 18-22, & 28-32 weeks, focusing on anatomy, chromosomal risks, and organ development. Essential for fetal health monitoring and guiding parent counseling.

Discover the impact of our care

Hear what our patients have to say about their pregnancy journey with us.

"This review is long overdue but I am so thankful to Dr. Mansano and Dr. Schmuel for providing me with such great care during my stressful and difficult pregnancy. Although the office was far from my home, it was worth the drive twice a week. Dr. Mansano was so detailed and went over the ultrasounds himself to make sure my babies were healthy. He was honest, respectful, and straightforward at every appointment and took appropriate measures when needed- I can confidently say he saved my daughters' life. I highly recommend them for high risk pregnancies."

Arsine-Amy A.

Patient, Tarzana

"I am extremely happy with the exceptional care I received from Dr. Mansano at this office. As a fellow physician, I had my fair share of anxiety during my high-risk pregnancy, but Dr. Mansano exceeded my expectations in every way. His impressive knowledge, commitment to staying current, and meticulous attention to detail instilled a deep sense of trust and comfort. I highly recommend Dr. Mansano to anyone seeking superior care for their high-risk pregnancy. His expertise, professionalism, and dedication to patient care make him an outstanding physician, and I feel privileged to have had him as my physician. I will always be grateful for his exceptional care, which ensured the safe arrival of my little one."

Leili P.

Patient, Thousand Oaks

"Dr. Esther Schmuel is absolutely amazing. Very knowledgeable, patient and caring. Being pregnant and going in for routine ultrasounds can be extremely nerve wracking, having a doctor you trust and feel comfortable with is so important."

Shira K.

Patient, Tarzana

"Amazing experience at this practice with both doctors. Yes, sometimes they ran a bit late, but they always called me prior to my appointment to let me know they were running late and to come in later. This is extra effort they didn't need to do which was greatly appreciated! In addition, I never felt rushed, and they answered all of my questions thoroughly. I would recommend this practice and both doctors to anyone."

Kate T.

Patient, Tarzana

"This review is for Dr. Roy Mansano. When I was pregnant with my son last year I was a high risk pregnancy and had a few small complications and Dr Mansano and this office took amazing care of me. Nobody wants the feeling of being high risk and constantly being anxious but this office gave me a lot of ease and was constantly checking on myself and the baby. I was able get extra ultrasounds for reassurance and was getting constant growth scans as well. Thank you for everything and guiding me with delivering a healthy baby boy!"

Larissa M.

Patient, Tarzana

"This is the place to be at if you want to feel like home. Great doctor makes you feel the way everyone should. Highly recommended"

Adir S.

Patient, Tarzana

"Dr. Mansano is fantastic! I am pregnant with my first child (over the age of 35) and from the very first appointment, he has been very kind, patient and has had a great bedside manner. I always appreciate his thorough explanation of everything happening at the different stages of my pregnancy. The entire staff is friendly and seems genuinely happy. I would highly recommend Dr. Mansano for your high-risk pregnancy - especially if it is your first. My husband and I both enjoy every meeting with him!"

Jackie Z.

Patient, Tarzana

Meet our prenatal specialists

Our team of prenatal specialists brings a wealth of expertise and compassion to every patient interaction, ensuring personalized care tailored to your unique needs. With years of experience and dedication to excellence, they are committed to guiding you through every stage of your pregnancy journey with confidence and support.

Dr. Roy Mansano Maternal Fetal Medicine Prenatal specialist
Roy Mansano, M.D.

Dr. Mansano is a board-certified Obstetrician/Gynecologist and Maternal-Fetal Medicine Perinatologist with extensive training and experience. He is renowned for his groundbreaking research in Maternal Fetal Medicine, notably receiving prestigious awards for his work on the uterine environment's impact on offspring health. With expertise in fetal monitoring, prenatal ultrasound, and optimizing maternal health, Dr. Mansano's dedication to research and clinical practice ensures the best possible outcomes for both mother and baby.

Dr. Esther Schmuel Maternal Fetal Medicine Prenatal specialist
Esther Schmuel , M.D.

Dr. Esther Schmuel is a highly regarded board-certified Obstetrician/Gynecologist and Maternal-Fetal Medicine specialist, recognized for her expertise in fetal programming and maternal nutrition. With a distinguished academic background and extensive research experience, including work on the impact of maternal diet on offspring health, she brings a wealth of knowledge to her practice, ensuring comprehensive care for expectant mothers and their babies.

Make your appointment

We offer expert medical services at our two locations in the San Fernando Valley of Los Angeles

Give us a call at 818-345-2455 to make an appointment or you can request an appointment by clicking the button below.

Thousand Oaks Office:
555 Marin street Suite # 250
Thousand Oaks,CA-91360

Tarzana Office:
18399 Ventura Blvd. #249
Tarzana, CA  91356

Have any questions?

Please see our FAQ to address any questions you may have.