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Women's Health at Every Age

An OB/GYN, or Obstetrician-Gynecologist, is a doctor who specializes in female reproductive health, pregnancy and childbirth. However, the practice of OB/GYN isn’t limited to these areas alone. OB/GYNs can also act a woman’s primary health provider, or PCP. They can screen for diseases such as breast and female reproductive cancers, diabetes and high blood pressure (also known as hypertension). They can also help women who have trouble getting pregnant, as well as those who are considered at high risk for health problems during and after pregnancy. OB/GYNs can also help women with urinary tract disorders. Some OB/GYNs work with children and adolescents, while others focus on adults and/or senior women.
Regardless of the Ob/GYN doctor you see, every doctor here at Monsey Health Center will treat you with the utmost care and professionalism that you deserve.


Personalized Care and Guidance

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Dr. Chauhan’s medical education began in India, where she completed her MBBS at SP Medical College in 1998 as the top student for three years. During the three years she was employed as a field worker helping to immunize children from polio and organize blood drives, Dr. Chauhan also completed her residency in Obstetrics and Gynecology at SN Medical College in Agra, India in 2004. Following residency, she moved to the United Kingdom and was employed by both Queen Elizabeth Hospital and Queen Mary Hospital as a Senior House Officer. She is registered with the United Kingdom’s General Medical Council. After coming to the United States Dr. Chauhan completed another residency program in Obstetrics and Gynecology in 2010 at Flushing Hospital Medical Center, where she received an award in her second year as the best teaching resident. Following residency, she joined Blair Medical Center and then Hamilton Health Center in Pennsylvania as an OBGYN physician, and received Board Certification status.

Languages Spoken: English, Hindi

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Dr. Hilsenrath received her Doctor of Medicine at the American University of the Caribbean in Montserrat, British West Indies.  She completed her Residency at Stamford Hospital in Stamford, CT and went on to a Fellowship at Baylor College of Medicine where she practiced Reproductive Endocrinology and Infertility Medicine in Houston, Texas.  Dr. Hilsenrath’s areas of expertise include: PCOS, ovulation induction, contraception, menopausal medicine and general gynecology.  She is also a skilled Obstetrician providing antepartum and intrapartum obstetrical care, as well as labor and delivery.

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After receiving her medical degree from Ross University School of Medicine in Bridgetown, Barbados, Dr. Sonia Kim completed an internship at the SUNY Downstate Medical Center, Brooklyn, New York. She then completed her residency at Wayne State University/Detroit Medical Center, Detroit, Michigan.

Dr. Kim is a skilled and experienced OB/GYN who provides exceptional care for women at all stages of their lives. Dr. Kim helps women stay healthy and prepare for pregnancy. She offers prenatal, labor and delivery, and postnatal care, and guides women through the changes and challenges of menopause.

languages Spoken: English, Korean

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Heather (Chana) King, CNM, WHNP, received her BSN from Rutgers University in 2014. She continued her education at Georgetown University,  earning a dual Masters in Midwifery and Women's Health. Previously,  she worked for 9 years as a doula (labor coach) in the community, having received her doula certification from DONA (Doulas of North America).


Chana is dedicated to using her education,  as well as experience as a labor coach, to help women  to have positive,  empowering births that are respectful of their individual birth choices.  She also provides complete well woman exams, gynecological visits and contraceptive counseling. 


Chana lives with her husband and children in Passaic, NJ.



Miriam (Melissa) Cantor, LM, CM, MS is a midwife with over 7 years’ experience in the field of childbirth, first as a doula (labor coach) and then as a midwife.  Miriam graduated from the longstanding Midwifery Institute at Thomas Jefferson University. 

Miriam is proud to be able to provide woman-centered, holistic midwifery to the Rockland County community.  She sees women for gynecology and all aspects of pregnancy care.


Languages Spoken:  English, Hebrew, Yiddish & Spanish


Rebecca Birnbaum received her Masters of Science and Nursing at Chamberlain University in Chicago, IL.  She is a dedicated Family Nurse Practitioner, experienced in a range of sub-specialties such as cardiology, neurology, internal medicine and women’s health. 

Her previous experience includes: Staff Registered Nurse at NorthShore University Health System in Evanston & Skokie, IL, FNP at R & W Medical Center in Chicago, IL and FNP at Midtown Reproductive Medicine in New York City.

Rebecca is compassionate and dependable with a strong desire to provide optimal medical care to her patients.

Rebecca joined the CMADC team of providers in 2023. 

In addition to seeing women in OB/GYN, Rebecca also services adults in the Primary Care department.

languages Spoken:  English

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