Dyan Hes, MD FAAP

Dyan Hes MDNamed a 2013 Top Doctor by New York Magazine, Dr. Dyan Hes is Medical Director of Gramercy Pediatrics in New York City and a Director of the American Board of Obesity Medicine. She is Board Certified in both pediatrics and obesity medicine, and practices both in her New York office. In addition, she serves as Clinical Assistant Professor of Pediatrics at the Weill Medical College of Cornell University.

Dr. Hes completed her residency in Social Pediatrics at New York’s Albert Einstein School of Medicine, Montefiore Medical Center. Prior to founding Gramercy Pediatrics, she maintained a large primary care practice within Park Slope Pediatrics in Brooklyn, New York. . . more


Sarah Li-Koo, MD FAAP, CLC

Sara Li M.D.Dr. Sarah Li graduated with her M.D. from Stony Brook University School of Medicine in 2010 and completed her internship and residency training at Yale-New Haven Children’s Hospital in 2013.  Prior to this, she obtained her B.A. at Baruch College as a scholar of the CUNY Honors College (now known as the Macaulay Honors College).  After the completion of residency, she returned to her hometown of New York where she became board certified in pediatrics and practiced at a private office in Queens.

Dr. Li is excited to join Gramercy Pediatrics and to help take care of your children’s medical needs.  In her free time, she loves living in and exploring the city and hanging out with her dog Lana.


Daniel Wolloch, MD FAAP

Daniel Wolloch, M.D.Daniel Wolloch earned his MD from Albert Einstein College of Medicine. In 1991 he completed his residency at NYU Bellevue. He then spent several years working tirelessly with his son Zachary, who is autistic. Zachary was able to finally attend school, and Dr Wolloch then resumed his medical career, working for the Montefiore Medical Group and culminating in spending the past five-plus years at Pedimedica in Teaneck New Jersey. He was voted one of “NJ’s Favorite docs” in NJ Family Magazine in 2013, and has written several articles for Holy Name Hospital and 201 Family magazines.

“Dr. Dan” has a special interest in Developmental Pediatrics and asthma, and is very experienced in managing medically complex patients. Creating an atmosphere in which fun is combined with excellent care is a cornerstone of his approach to patient care.
He enjoys skiing, pilates, the theater and walking with his wife, Valerie.


Stephenie Shapoff, NP

Stephenie ShapoffStephenie Shapoff graduated with her M.S.N. as a pediatric nurse practitioner from Seton Hall University in 2013. She is board certified by the Pediatric Nursing Certification Board. Prior to this, she obtained a B.S. in nursing and a B.A. in psychology also from Seton Hall University.  Before joining Gramercy Pediatrics, she practiced at a foster care facility in Manhattan and a private office in Yonkers. She also worked as an RN in the burn intensive care unit at New York Presbyterian Weill Cornell Medical Center.

Stephenie is looking forward to getting to know the families and children at Gramercy Pediatrics. She resides in New Rochelle with her husband and son. She enjoys skiing, cooking, Bar Method and spending time with her family.