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Nathaniel DeNicola, MD, MSHP, FACOG, is a board-certified obstetrician and gynecologist who sees patients at Orange County OBGYN in Newport Beach. He grew up in Los Angeles and Orange County, rooting for the Dodgers and Lakers. When traveling, he always makes In-N-Out his first stop when returning to California. He enjoys bodysurfing on the peninsula in Newport Beach and taking his one-year-old daughter, Keaton, to swim class.

Nathaniel has Orange County roots: he attended high school at Santa Margarita and completed medical school at the University of California, Irvine.  

Nathaniel also has professional experience outside California: he completed residency in obstetrics and gynecology at Tulane University and still returns to New Orleans annually to present lectures and enjoy charbroiled oysters.  After residency he earned a Masters of Science in Health Policy Research (MSHP) with the Robert Wood Johnson Clinical Scholars program at the University of Pennsylvania.

Prior to returning to California in 2020, Nathaniel worked on health policy in Washington, DC, where he held a joint appointment with Johns Hopkins Medicine. He is a national leader on emerging telehealth policy and serves as the resident telehealth expert for the American College of Obstetricians and Gynecologists. He also has international leadership in environmental health policy and holds liaison roles with the American Academy of Pediatrics, the International Federation of Gynecology and Obstetrics, and the World Health Organization.

Yonatan Mahller, MD, PhD,  is a board-certified obstetrician and gynecologist who provides expert obstetric and gynecologic care to women of all ages at Orange County OBGYN in Orange County. Patients can access a full range of services at his office in Newport Beach, California, where he offers well-woman care, care for low and high-risk pregnancies, pre-conception and infertility counseling and treatment for menopause. Dr. Mahller combines excellent surgical training with cutting-edge technology, including the MonaLisa Touch® laser that treats vaginal discomfort associated with menopause and urinary incontinence. He is affiliated with Hoag Hospital.

Dr. Mahller is a native of Southern California. While at the University of California at Santa Barbara, he obtained a Bachelor’s degree in physiology and a Master’s degree in molecular biology. He then relocated to the Midwest to attend the University of Cincinnati College of Medicine, where he completed a dual degree program, obtaining his M.D. and a Ph.D. in developmental biology. He then returned to California and completed residency in obstetrics and gynecology at the prestigious Cedars Sinai Medical Center in Los Angeles.

Throughout his medical training, Dr. Mahller has won numerous awards recognizing his caring bedside manner and stellar surgical skills. While in graduate school, he performed significant preclinical research studies utilizing novel anticancer agents and authored numerous publications on topics such as cancer stem cells. He has given multiple presentations at international scientific meetings. During residency, Dr. Mahller created and implemented a course for OB/GYN residents, teaching them the Spanish needed to provide care to Spanish-speaking patients.

Dr. Mahller's patients count on him to devote the time needed to answer their questions, get to the underlying cause of their symptoms and develop an individualized treatment plan.

When he’s not caring for patients, Dr. Mahller likes to develop new technology, travel, cook, and spend time with his family.

Dr. Clark has a passion for healing and for improved patient outcomes. Following fellowship training, Dr. Clark was recruited by Hoag Hospital as the first Medical Director for the Womens Center for Continence. He received his medical degree from the University of Utah School of Medicine and completed his residency in Obstetrics and Gynecology. After completing residency, he further specialized by completing a Fellowship in Female Pelvic Medicine and Reconstructive Surgery ("Urogynecology") at Indiana University/Methodist Hospital in Indianapolis, IN.

Dr. Clark is nationally recognized for his surgical skills and teaches advanced surgical techniques to other physicians throughout the United States. In 2008, he was invited by the Jordanian government to teach advanced gynecology surgery techniques to the Ministry of Health Gynecology Division. Dr. Clark uses a wide range of surgical and laparoscopic techniques and a da Vinci® robot. He participates in the design and development of surgical instruments and uses cutting edge urogynecology surgery techniques, products, and modalities.

Professional Recognition

• Board Certified, OB/GYN
• Board Certified, Female Pelvic Medicine and Reconstructive Surgery
• Member, Phi Beta Kappa
• Fellow, American Association of Gynecologic Laparoscopists
• Invited Guest of Government of Jordan to teach minimally invasive gynecologic surgery

Dr. Clark is an active member of the Orange County community having served as a youth soccer coach for over a decade and as a Scout Master in the Newport Beach Boy Scouts program. He enjoys hiking, camping and ocean sports. You may see him rowing a scull in the Newport Bay in the early morning hours. Dr. Clark is a family man and has been married to his wife for 35 years. Together they have four children. 

Catalin Marinescu, MD, FACOG, specializes in pelvic surgery with an emphasis on minimally invasive procedures at OBGYN CARE in Newport Beach and Irvine, California. He performs gynecologic surgeries, such as hysterectomy and reconstructive procedures for prolapse or other pelvic floor defects, as well as procedures to treat urinary incontinence. Dr. Marinescu has affiliations with Hoag Hospital Newport Beach and Hoag Hospital Irvine.

Dr. Marinescu had an unparalleled 10 years of post-graduate residency training. He did a general surgery program at Carol Davila University of Medicine and Pharmacy in Bucharest, Romania and was trained in obstetrics and gynecology at the prestigious Mount Sinai Hospital Medical Center in Chicago, affiliated with Rush University.

Highly trained in obstetrics and gynecology, including infertility, Dr. Marinescu offers advanced prenatal diagnosis for high-risk pregnancies and follows the safest and most effective guidelines for delivery. His results are outstanding in difficult deliveries and minimally invasive surgeries, with over 200 da VinciⓇ robotic surgeries performed. 

Due to his unique worldly experiences on both sides of the Atlantic, Dr. Marinescu understands the impact of different cultures on each woman’s unique personality. He is attentive to each woman’s concerns and respectful of her time. He exercises great compassion and care with his patients, and works in a collaborative effort with other specialists to determine the best course of action for each patient’s specific journey. 

Women of all ages receive comprehensive and compassionate care by an all-female staff at Women 2 Women Medical Center in Irvine, California. Led by G. Lara Bhatnagar, MD, a board-certified OB/GYN, the warm and welcoming staff greets you with a smile from the moment you call or request an appointment online, and they go out of their way to accommodate your needs. Dr. Bhatnagar cares for each patient from the first visit, throughout their pregnancy, delivery of your baby, and beyond. As an OB/GYN for several decades, Dr. Bhatnagar has delivered over 3,000 babies and completed over 1,000 surgeries successfully, receiving several awards recognizing her care and knowledge, including the Top OB/GYN in Irvine Award and the Orange County Circle of Care Award.

Because of their ability to serve the needs of diverse populations, Women 2 Women Medical Center is one of only 21 practices nationwide to receive a competitive grant from the National Committee for Quality Assurance (NCQA).

Dr. Bhatnagar and her staff specialize in minimally invasive surgeries, including colposcopy, hysterectomy, and hysteroscopy for various gynecological issues. The doctor also provides maternity care, routine annual preventive exams, and care for complex gynecologic issues such as endometriosis, fibroids, or infertility treatment. With an all-female staff, the entire team understands the unique complex challenges women face and work with each patient to navigate the process of diagnosis and treatment. Committed to treating every patient as a whole, the mind and body connection that affects every individual’s wellbeing, Dr. Bhatnagar and her staff make the time to get to know patients as individuals to provide the highest quality care.

To schedule an appointment, call Women 2 Women Medical Center, or use the online booking tool.

Karie McMurray MD, FACOG, is a board-certified OB-GYN helping patients in her office at Conejo Women’s Medical Center, located in Thousand Oaks, California in the Conejo Valley area near Westlake Village. She’s devoted to serving all the health care needs of women in a warm and caring environment, including bioidentical hormone therapy, osteoporosis, polycystic ovarian syndrome, incontinence, birth control, body contouring, and many other gynecologic needs.

Dr. McMurray has been involved in health care for over 25 years. She graduated from USC School of Medicine, received a master’s degree in nursing from UCLA, and a Bachelor of Science in Nursing from the University of Utah. Dr. McMurray is trained in general obstetrics and gynecology, family practice, and certified in da Vinci® minimally invasive robotic surgery. She is certified in MonaLisa Touch and SculpSure laser therapy. For more than 20 years of experience prescribing bio-identical hormones, she is a specialist in the hormonal needs of patients from adolescence through menopause.

She and her husband Dr. Kyle Himsl, live in Westlake Village with their two children. 

Catalin Marinescu, MD, FACOG, specializes in pelvic surgery with an emphasis on minimally invasive procedures at OBGYN CARE in Newport Beach and Irvine, California. He performs gynecologic surgeries, such as hysterectomy and reconstructive procedures for prolapse or other pelvic floor defects, as well as procedures to treat urinary incontinence. Dr. Marinescu has affiliations with Hoag Hospital Newport Beach and Hoag Hospital Irvine.

Dr. Marinescu had an unparalleled 10 years of post-graduate residency training. He did a general surgery program at Carol Davila University of Medicine and Pharmacy in Bucharest, Romania and was trained in obstetrics and gynecology at the prestigious Mount Sinai Hospital Medical Center in Chicago, affiliated with Rush University.

Highly trained in obstetrics and gynecology, including infertility, Dr. Marinescu offers advanced prenatal diagnosis for high-risk pregnancies and follows the safest and most effective guidelines for delivery. His results are outstanding in difficult deliveries and minimally invasive surgeries, with over 200 da VinciⓇ robotic surgeries performed. 

Due to his unique worldly experiences on both sides of the Atlantic, Dr. Marinescu understands the impact of different cultures on each woman’s unique personality. He is attentive to each woman’s concerns and respectful of her time. He exercises great compassion and care with his patients, and works in a collaborative effort with other specialists to determine the best course of action for each patient’s specific journey. 

OB/GYN Dr. Maryam Ardalan of Women Elite Care, Inc. in Valencia, California, chose her life-long career path when she was only thirteen years old. Her passion for helping heal members of her community made her pursue medical training. She attended the West Azerbaijan University of Medical Sciences in Iran. During her medical externship, she began to love the field of Obstetrics and Gynecology. She was fascinated by how educating and treating women would help them live long and healthy lives.

Once she finished her externship, Dr. Ardalan completed four years of residency training as an OB/GYN. She graduated with honors and began working with diagnosing and treating infertile couples. Throughout the years she has participated in multiple research projects involving infertility.

Following completion of residency training in Iran, Dr. Ardalan began work in the rural areas of Northwestern Iran. She later had the opportunity to participate in an OB/GYN clinical rotation in Vienna, Austria for a year.

After finishing her rotation in Austria, she immigrated to the United States with her family. Her love and dedication to Obstetrics and Gynecology gave her the drive to successfully complete the Medical Board examinations and re-enter four years of residency at Harbor-UCLA Medical Center. Upon completion, she started a position at the University of San Francisco as an assistant professor in the department of OB/GYN for two years where she was tasked with instructing medical students and residents. Dr. Ardalan moved to Valencia, California, shortly after and has been working in the area since 2009.

Dr. Ardalan’s mission is to provide quality medical care in a professional, supportive, and loving environment.

She is a member of numerous medical societies including AMA (American Medical Association), ACOG (American Academy of Obstetrics and Gynecology), and AAGL (American Association of Gynecologic Laparoscopists).

Dr. Simmi P. Dhaliwal is a board-certified OB/GYN physician at Femcare Medical Associates in Pomona and Ontario, California. As a Fellow of The American Congress of Obstetricians and Gynecologists, she's committed to ongoing professional education and provides patients with the highest quality health care.

Dr. Dhaliwal completed her undergraduate studies in biomedical sciences at the University of California, Riverside. She attended medical school at the University of California, Los Angeles School of Medicine from 1992-1996, and she completed her residency at Harbor UCLA Medical Center Department of OB/GYN from 1996-2000.

She was Chairman of the OB/GYN department at Pomona Valley Hospital from 2007-2008, 2009-2010, and 2015-2016. Dr. Dhaliwal has been board-certified by the American Board of OB/GYN since 2003.

Dr. Dhaliwal has lived in the area since she was 15-years-old and attended all local schools. In her spare time, she enjoys reading, bike riding at the beach, shuttling her three kids to soccer, and walking her Labrador puppy.

At Valencia Center for Women’s Health, Dr. Navid Navizadeh is a leading provider of women’s health services including obstetrics and gynecology. Patients throughout the Valencia, California area, can receive services such as fetal testing, family planning, minimally invasive procedures, genetic counseling, gynecological cancers screening, laparoscopic surgery, 4D/3D ultrasounds, hysteroscopy, and pelvic reconstruction as well as care for infertility, menopause, urinary incontinence, and osteoporosis.

Dr. Navizadeh is the founder and medical director of Valencia Center for Women’s Health. He received his undergraduate degree in genetics and molecular biology at the University of California. Dr. Navizadeh completed a comprehensive research fellowship in molecular and cell biology at the University of California at San Francisco (UCSF). He further expanded his research experience at the University of Southern California’s School of Medicine, where he obtained his medical degree.

At the USC School of Medicine, Dr. Navizadeh had the chance to work on innovative research projects in the fields of obstetrics, gynecology, endocrinology, infertility, and ultrasound imaging. He investigated the effects of seizure disorders and the treatment programs in pregnancy. Dr. Navizadeh was awarded the Pacific Coast Fertility Society’s award in Estrogen research.

Dr. Navizadeh completed an internship in Obstetrics at the Parkland Memorial Hospital in Dallas, Texas. He continued his residency at Mount Sinai-Maimonides Medical Center in New York. In obstetrics, his group’s work in ultrasonography to predicate preterm labor was published and received several awards. In the area of infertility and endocrinology, Dr. Navizadeh's works contributed to the understanding of the effects of an embryo’s size and quality in the process of in-vitro fertilization (IVF). Dr. Navizadeh completed the prestigious Galloway fellowship at the Memorial Sloan-Kettering Cancer Center in New York City. There, he had the opportunity to advance his surgical skills in complex gynecological operations in addition to learning the latest laparoscopic and endoscope techniques.

Dr. Navizadeh has also expanded his interest to urogynecology and pelvic surgery. In southern California, he pioneered the use of the new Transopturator Sling procedure for treating female urinary incontinence.

Valencia Center for Women’s Health and Dr. Navizadeh welcome all new patients to the practice and can work with most forms of medical insurance.

At Valencia Center for Women’s Health, Dr. Michelle Uaje is a leading provider of obstetrics and gynecological medicine for women throughout Santa Clarita Valley area. At the Valencia, California location patients can receive services such as genetic counseling, gynecological cancers screening, fetal testing, family planning, 4D/3D ultrasounds, laparoscopic surgery, minimally invasive procedures, hysteroscopy, and pelvic reconstruction as well as care for urinary incontinence, infertility, menopause, and osteoporosis.

Dr. Uaje obtained her medical degree from the University of California at Irvine, and she completed her residency in obstetrics and gynecology at Kaiser Permanente in Santa Clara, during which she served as chief resident. Dr. Uaje is a concerned and capable OB/GYN, who serves the community and provides the utmost care to each person. She is certified by the American Board of Obstetrics and Gynecology and holds memberships in the American College of Obstetricians and Gynecologists and the American Association of Gynecologic Laparoscopists. Dr. Uaje received awards from Kaiser Permanente and the University of California at Irvine for her mentorship efforts. She has also served as an Associate Physician at the Southern California Permanente Medical Group.

Dr. Uaje is devoted to ensuring that patients’ health continues to improve and maintain optimal states. She is also passionate about developing long-lasting relationships with each and every one of her patients. Dr. Uaje works to take her time with patients so she can fully understand their symptoms and give accurate diagnoses to ensure the ongoing health of all her patients. Patients can visit Dr. Uaje for a wide array of reasons including pregnancy, breast cancer screening, fibroids, pap smears, and abdominal pain.

Valencia Center for Women’s Health and Dr. Uaje welcome all new patients to the practice, where most major forms of insurance are accepted.

Dr. Simmi P. Dhaliwal is a board-certified OB/GYN physician at Femcare Medical Associates in Pomona and Ontario, California. As a Fellow of The American Congress of Obstetricians and Gynecologists, she's committed to ongoing professional education and provides patients with the highest quality health care.

Dr. Dhaliwal completed her undergraduate studies in biomedical sciences at the University of California, Riverside. She attended medical school at the University of California, Los Angeles School of Medicine from 1992-1996, and she completed her residency at Harbor UCLA Medical Center Department of OB/GYN from 1996-2000.

She was Chairman of the OB/GYN department at Pomona Valley Hospital from 2007-2008, 2009-2010, and 2015-2016. Dr. Dhaliwal has been board-certified by the American Board of OB/GYN since 2003.

Dr. Dhaliwal has lived in the area since she was 15-years-old and attended all local schools. In her spare time, she enjoys reading, bike riding at the beach, shuttling her three kids to soccer, and walking her Labrador puppy.

Board-certified OB/GYN Geeta Patel, MD, of Inland Women Care is an experienced physician providing exceptional services to women living in Rancho Cucamonga, California. She speaks Gujarati and Hindi as well as fluent English and welcomes women of all ages and nationalities to her practice.

Dr. Patel holds medical and surgical degrees from Sardar Patel University’s PramukhSwami Medical College in Gujarat, India, graduating in 1995. She furthered her education as a research fellow in nephrology at the Long Island Jewish Medical Center Department of Medicine in New Hyde Park, New York, and continued for her preliminary year as a general surgical resident.

Dr. Patel completed a four-year residency in obstetrics and gynecology at Detroit Medical Center and Hutzel Women’s Hospital, affiliated with Wayne State University in Detroit. She earned her board certification in 2010 by the American Board of Obstetrics and Gynecology.

Dr. Patel has extensive training in advanced gynecological surgery and specialized training in urogynecological treatment and urodynamic testing, as well as having considerable experience in obstetrics. She is committed to women’s health and providing the best care possible. Dr. Patel’s vision is to provide quality gynecological and obstetric care to women from puberty through maternity care, delivery, menopause, and beyond.

As a woman, Dr. Patel understands how important it is for women to have a comfortable, open environment to discuss their personal needs and concerns.

Dr. Obey is an award-winning physician and thought leader in women's health. She has been providing quality women’s health services for 20 years. Dr. Obey is recognized as a leader in her field. She is committed to providing compassionate care to patients. She believes in providing patients with all their options, and partners with patients to help them make the best-informed decision possible. Dr. Obey is a staunch advocate for women’s rights and empowerment. Dr. Obey completed a master’s degree in public health from one of the top public health institutions in the nation, the Milken Institute of Public Health at The George Washington University in Washington, D.C. Dr. Obey's vision is to intersect her vast clinical experience and social activism with the transdisciplinary public health sector. Her office also offers wellness, functional medicine, and aesthetics services. She looks forward to using her knowledge and expertise to provide you with the best care possible.

Donna A. Richey, MD, is a board-certified OB/GYN who’s been named as one of America’s Most Valuable Care Providers by Stanford University’s Clinical Excellence Research Center. Dr. Richey provides high-quality, low-cost, personalized care for women ages 12 and above at her private practice in Torrance, California. 

Dr. Richey is a fourth-generation Los Angeles native who worked at a nurse’s aide, unit secretary, and registered nurse throughout college and medical school. After earning her medical degree at the University of California, Los Angeles School of Medicine, Dr. Richey finished her internship and residency in obstetrics and gynecology at the LAC+USC Medical Center in Los Angeles. 

With a mission to guide her patients through the adventure of pregnancy, birth, and new parenthood, Dr. Richey works with her patients as partners in their own journey. She provides highly individualized prenatal care and emphasizes the natural childbirth experience. Dr. Richey has a goal of promoting natural childbirth in California and has the lowest Cesarean section rate at Providence Little Company of Mary Medical Center in Torrance, California. 

When she isn’t working with patients, Dr. Richey enjoys traveling, seeing music at Disney Concert Hall, and watching the Los Angeles Dodgers with her husband, Stuart, and daughter, Arielle.

Hello!
My name is Julie Oates and I am a Board Certified Nurse Midwife. I am passionate about providing integrative healthcare that meets the needs of each individual person. I believe pregnancy and birth are momentous events that have the ability to shape one’s life. It is my honor and privilege to be able to work with people in order to provide a space for everyone to move through these transitions with support, safety, and confidence in their healthcare choices.
I firmly believe in collaborative care that involves both the provider and the person receiving care. YOU are the expert of your own body and we are a team. Together we can make the best choices that will determine the trajectory of your overall health.
I am absolutely delighted to meet you!