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-Koo 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 became a Fellow of the American Academy of Pediatrics (FAAP). She subsequently became a Certified Lactation Counselor (CLC) to further support families in their breastfeeding goals. Dr. Li-Koo was named a New York SuperDoctor Rising Star in 2018 .

Dr. Li-Koo has found it to be a joy and a privilege to take care of your family at Gramercy Pediatrics. In her free time, she loves living in and exploring the city with her husband, baby, and pup 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.


Michael J. Lee, MD FAAP

Michael J Lee, MD gramercy pediatricsDr. Michael Lee joins Gramercy Pediatrics with a diverse background. After growing up in Tennessee, he graduated magna cum laude from Emory University with a B.S. in Biology in 2003. For a year, he worked for a non-profit organization on immigration health at NYU. Dr. Lee then received his M.D. from the University of Tennessee Health Science Center College of Medicine in 2008.

In 2011, Dr. Lee completed his pediatric internship and residency at Jacobi Medical Center in the Bronx, NY. Following this, he worked in a small private pediatric practice in New Brunswick, NJ, and then a large NY Chinatown pediatric practice with offices in Manhattan, Brooklyn and Queens. In 2013, he was voted into the circle of New Jersey’s Favorite Kids Docs by NJ Family Magazine.

Board certified in pediatrics and a fellow of the American Academy of Pediatrics, Dr. Lee has experience and passion to bring optimal care to your children. Outside the office, he enjoys exploring the city, reading, training for full and half marathons, and spending quality time with his wife and 2-year-old daughter.


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.


Karen Jill Browner-Elhanan, MD FAAP

Dr. KJ Browner-Elhanan is a board-certified pediatrician, with board certification in the subspecialty of Adolescent medicine; she also completed a fellowship in Community pediatrics. She recently returned to her native NYC. Recently, she has been recognized as a forerunner of innovative educational programs at Memorial health university medical center in Savannah, Ga. and recently received funding from the March of Dimes for the establishment of the “teen-tot clinic “ at Memorial Health University Medical Center.

After completing a residency in Pediatrics, while serving as a Pediatric casualty emergency room attending at a large, rural hospital in Israel, Dr. KJBE became acutely aware of disparities in injury rates amongst different socio-economic groups. She began to research injury prevention, and was invited as a research and clinical fellow to the NY Health fund project, part of the division of Community Pediatrics at the Children’s hospital at Montefiore/Albert Einstein college of medicine. During the year-long fellowship, Dr. KJBEs interested focused further on adolescent injuries and sexual abuse examinations, which lead to a 3 year fellowship in Adolescent medicine at the same institution. Her clinical research interests since then have been in adolescent medicine and risk-taking prevention, with special emphasis on student and resident education for this population. She is an avid educator, researcher, presenter, and publisher in her field and has much experience in clinical practice, including development and establishment of community pediatric practices as a colleague and mentor to Dr. Dyan Hes, founder and owner of Gramercy pediatrics.