Our Providers

Longwood Pediatrics is the medical home for all our patients. As a medical home we work as a team and collaborate with all our patients’ providers to deliver comprehensive care. We have an experienced staff of physicians and nurse practitioners. All of our physicians and nurse practitioners are Board Certified in Pediatrics.  All of our physicians hold faculty appointments at Harvard Medical School, and are actively involved in teaching Harvard Medical School students and Boston Children’s Hospital pediatric residents.

Our practice is completely open to newborns and transfer patients. Occasionally a provider will decrease their acceptance rate in order to maintain good access for existing patients. All providers accept new siblings of existing patients. Please call our office to schedule a new patient appointment or register your new baby.


John P. Cloherty, M.D.

Dr. Cloherty graduated from Boston University School of Medicine in 1962 and completed his pediatric residency training at Massachusetts General Hospital. He was a General Medical Officer in the United States Navy from 1963-1967. Dr. Cloherty joined Longwood Pediatrics in 1969 and also practices Neonatology at Children’s Hospital and Brigham and Women’s Hospital. Meet Dr. Cloherty!

Amy L. Ryan, M.D.

Dr. Ryan graduated from Harvard Medical School in 1984. She completed her pediatric residency training at Children’s Hospital Boston and also received fellowship training in Ambulatory Pediatrics. Dr. Ryan has practiced at Longwood Pediatrics since 1988.  Meet Dr. Ryan!

Robert S. Michaels, M.D.

Dr. Michaels graduated from Harvard Medical School in 1977 and completed his pediatric residency training at Children’s Hospital Boston. He has practiced at Longwood Pediatrics since 1990.  Meet Dr. Michaels!

Gregory J. F. Young, M.D.

Dr.Young graduated from Columbia University College of Physicians and Surgeons in 1987. He completed his pediatric residency training and served as Chief Resident at Children’s Hospital Boston in 1991. That year, he joined Longwood Pediatrics. Dr. Young is also President of the Pediatric Physicians’ Organization at Children’s Hospital.  Meet Dr. Young!

Louis Vernacchio, M.D., M.Sc.

Dr. Vernacchio graduated from Johns Hopkins University School of Medicine in 1993 and received his pediatric residency training at Children’s Hospital Boston. He also completed a research fellowship in Pediatric Epidemiology and currently spends a portion of his time performing clinical research. He has practiced at Longwood Pediatrics since 1996.  Meet Dr. Vernacchio!

Eleanor R. Menzin, M.D.

Dr. Menzin graduated from University of Pennsylvania School of Medicine in 1998. She completed her pediatric residency training at Children’s Hospital Boston and joined Longwood Pediatrics in 2001. Dr. Menzin speaks fluent Spanish.  Meet Dr. Menzin!

Kristie A. Koppenheffer, M.D.

Dr. Koppenheffer graduated from University of Rochester School of Medicine and Dentistry in 2003. She completed her pediatric residency training at Children’s Hospital Boston and Boston Medical Center through the Boston Combined Residency Program in Pediatrics. Dr. Koppenheffer joined Longwood Pediatrics in 2006.  Meet Dr. Koppenheffer!

Elizabeth H. Binney, M.D.

Dr. Binney graduated from George Washington School of Medicine in 1991. She completed her pediatric residency training at Children’s National Medical Center in Washington, D.C. Dr. Binney has practiced primary-care pediatrics in the Boston area since 1994 and joined Longwood Pediatrics in 2007.  Meet Dr. Binney!

Daniel F. O’Connor, M.D.

Dr. O’Connor graduated from Boston University School of Medicine in 2000. He completed his pediatric residency at Children’s Hospital Boston and Boston Medical Center and served as a Pediatrician in the United States Army in Texas and Iraq from 2003-2007. Dr. O’Connor joined Longwood Pediatrics in August 2007.  Meet Dr. O’Connor!

Margaret W. Manion, M.D.

Dr. Manion graduated from Mount Sinai School of Medicine, City University of New York in 1987. She completed her pediatric residency and served as Chief Resident at The Floating Hospital at New England Medical Center. Dr. Manion has practiced primary-care pediatrics in the Boston area since 1991 and came to Longwood Pediatrics in 2008.  Meet Dr. Manion!

Corinne Arrighini, P.C.P.N.P.

Mrs. Arrighini completed her pediatric nurse practitioner training at Boston College in 1995 and joined Longwood Pediatrics that same year. She is ANCC certified as a Pediatric Nurse Practitioner.

Joan McMenemy, P.C.P.N.P.

Ms. McMenemy completed her pediatric nurse practitioner training at Boston College in 1996 and joined Longwood Pediatrics in 1997. She also works part-time in the Neonatal Intensive Care Unit at the Brigham and Women’s Hospital. She is ANCC certified as a Pediatric Nurse Practitioner.

Damarys J. Caicedo, P.C.P.N.P.

Mrs. Caicedo completed her pediatric nurse practitioner training at MGH Institute of Health Professions in 1996 and joined Longwood Pediatrics in 1999. Mrs. Caicedo speaks fluent Spanish. Mrs Caicedo is the travel nurse at Longwood Pediatrics. She is ANCC certified as a Pediatric Nurse Practitioner.

Sarah Geary, C.P.N.P

Ms. Geary completed her pediatric nurse practitioner training at MGH Institute of Health Professions in 2009. She has worked at Longwood Pediatrics since 2008. She is PNCB certified as a Pediatric Nurse Practitioner. She completed the certification to become an Asthma Educator in 2012.

Photograph of Mary Mihovan, C.P.N.P

Mary Mihovan, C.P.N.P

Ms. Mihovan completed her pediatric nurse practitioner training at MGH Institute of Health Professions in 2014. She has worked at Longwood Pediatrics for two years as an RN. She is PNCB certified as a Pediatric Nurse Practitioner.

Tim Schuettge, L.I.C.S.W, M.P.H

Mr. Schuettge received his Masters in Social Work from Boston University in 1979 and also obtained a Masters in Public Health from Harvard University School of Public Health, with an emphasis on Maternal and Child Health. He joined Longwood Pediatrics in 2002 and provides integrated behavioral health services.

Photo of Jay Campbell

Jay D. Campbell, L.I.C.S.W

Mr. Campbell graduated from the Boston College Graduate School of Social Work in 2004 with a Master of Social Work, Clinical Program. He has practiced clinical social work in various settings to include in developmental pediatrics at a medical center, at a public school, and on a military installation. He joined Longwood Pediatrics in 2014 and provides integrated behavioral health services.