Our Physicians

Alan L. Friedman, M.D., F.A.C.O.G.

Dr. Alan Friedman is a board-certified obstetrician/Gynecologist. He is a diplomate of the American Board of Obstetrics and Gynecology and a Fellow of the American College of Obstetrics and Gynecology.
Dr. Friedman earned his medical degree in 1982 from the prestigious University of Chicago-Pritzker School of Medicine. He then completed his internship and residency in Obstetrics and Gynecology at New York University-Bellevue Hospital in 1986.  Dr. Friedman has been in practice in Princeton, NJ since 1986. He is Chairman of the Department of Obstetrics and Gynecology and a senior attending physician at the University Medical Center at Princeton.

Jeffrey K. Gross, M.D., F.A.C.O.G.

Dr. Gross is board certified in Obstetrics and Gynecology. He is a diplomate of the American Board of Obstetrics and Gynecology as well as a Fellow of the American College of Obstetrics and Gynecology.  Dr. Gross attended the University of Pennsylvania, where he majored in American history. After earning his medical degree from New York University School of Medicine in 1982, Dr. Gross completed his internship and Ob/Gyn residency at NYU Medical Center-Bellevue Hospital.  Dr. Gross has been in practice in the Princeton-Plainsboro area since 1986. He is a senior attending physician at the University Medical Center of Princeton at Plainsboro.

Alison R. Petraske, M.D., F.A.C.O.G.

Dr. Petraske joined Drs. Friedman and Gross in 1997. She is board certified by the American Board of Obstetrics and Gynecology and has been named a Fellow of the American College of Obstetrics and Gynecology.  Dr. Petraske graduated from Tufts University, where she earned a degree in Human Factors Engineering. She earned her medical degree in 1993 from Tufts University School of Medicine. Her post-graduate training included an Obstetrics and Gynecology residency at Baystate Medical Center in Massachusetts, a Tufts affiliate hospital. Prior to medical school, she was a research associate at MIT and Beth Israel Hospital.  Dr. Petraske is an attending physician at the University Medical Center at Princeton.

Nicole Siems, D.O.

Dr. Siems graduated from Stevens Institute of Technology with a degree in Biomedical Engineering. After earning her medical degree from the New York College of Osteopathic Medicine, she completed her residency in Obstetrics and Gynecology at Jersey City Medical Center, a program sponsored by Mount Sinai School of Medicine.   Dr. Siems has a special interest in contraception, adolescent medicine and bone health. She is well trained in laparoscopic surgery. Having grown up in Somerset, New Jersey, Dr. Siems is happy to be serving the nearby community. Dr. Siems currently resides in Plainsboro with her husband.  Dr. Siems is an attending physician at the University Medical at Princeton.