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The Valley Hospital
223 N. Van Dien Avenue
Ridgewood, NJ 07450



Ali Nasseri, M.D., Ph.D., Medical Director

Dr. Nasseri is the Medical Director of The Valley Hospital Fertility Center. He and his physician colleagues work as a team to provide unique treatment and care based on each patient’s singular needs.

Dr. Nasseri is a graduate of Emory University in Atlanta and the University of Maryland School of Medicine in Baltimore. He performed his residency in Obstetrics and Gynecology at Albert Einstein School of Medicine in New York City, and his fellowship was performed in Reproductive Endocrinology and Infertility at Mount Sinai Medical Center in New York City.

Dr. Nasseri is Board Certified from the American Board of Obstetrics and Gynecology, holding Diplomate status in Obstetrics and Gynecology and Reproductive Endocrinology and Infertility. He was formerly an Assistant Clinical Professor at New York University School of Medicine and has authored numerous articles and book chapters in reproductive endocrinology.

He is also the recipient of the Wyeth-Ayerst Reproductive Endocrine Fellow Award, a Serono Laboratories grant for scientific research, and the Parke-Davis Research Award to Advance the Management of Women’s Healthcare.

To reach Dr. Nasseri, please call 201-634-5400, or e-mail


Dehan Chen, M.D., Associate Clinical Director

Dehan Chen, M.D.

Dehan Chen, M.D., graduated from Harvard University receiving the Harvard College Scholar Award in 1989 and an A.B. degree in 1991. He received his medical degree from Albert Einstein College of Medicine in 1995. Dr. Chen completed his OB/GYN internship and residency at New York Presbyterian Hospital.

In 1999 he went on to a fellowship in reproductive endocrinology and infertility at the Center for Reproductive Medicine and Infertility at New York Presbyterian Hospital/Cornell Medical College in New York City completing his fellowship in June 2002. He is board certified in obstetrics and gynecology and reproductive endocrinology.

To reach Dr. Chen, please call 201-634-5400, or e-mail




Keri L. Greenseid, M.D., Staff Physiciangreenseid

Dr. Greenseid received her undergraduate degree from the State University of New York at Binghamton, and her medical degrees from the State University of New York Health Science Center at Brooklyn (SUNY Downstate Medical Center). She completed a residency in obstetrics and gynecology at New York University Medical Center and a fellowship in reproductive endocrinology and infertility at the Albert Einstein College of Medicine.

Dr. Greenseid is board certified in obstetrics and gynecology and in reproductive endocrinology and infertility. She is a member of the American College of Obstetricians and Gynecologists and the American Society for Reproductive Medicine.

“I chose reproductive endocrinology as my career because I find helping others build a family to be one of the most rewarding aspects of medicine,” Dr. Greenseid says. “I am dedicated to continuing to work to improve the science necessary to better the success of reproductive medicine while personalizing the care of each individual patient.”

Dr. Greenseid lives in Millburn, NJ, with her husband and two sons.

To make an appointment with Dr. Greenseid, please call 201-634-5400, or e-mail

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