Charmaine Chan, DO, Director of Osteopathic Education

Charmaine ChanDr. Chan graduated from Vassar College with a degree in anthropology-geography. She worked abroad in Indonesia for two years prior to returning to the U.S., where she worked in multiple healthcare related positions, including work with the intellectually disabled, quality improvement for Massachusetts Medicaid providers. 

She eventually entered medical training at the Philadelphia College of Osteopathic Medicine and did her Family Medicine residency at St. Joseph Medical Center in Reading, Pa. She was a National Health Service Scholar and did her service on the Navajo Nation in Shiprock, N.M. She also worked as a civilian physician in the military before returning to Philadelphia as family medicine faculty at the Philadelphia College of Osteopathic Medicine (PCOM). 

She currently serves as a rater for the Osteopathic Manipulative Medicine (OMM) portion of the COMLEX physical exam. Throughout her medical career, she has integrated OMM into her appointments with patients in both the outpatient and inpatient settings.


Joshua P Pregnar, DO, Critical Care

Dr. Pregnar graduated from Ursinus College with a major in Biology and minor in History.

He received a Master of Science with a research concentration from the Philadelphia College of Osteopathic Medicine. His Master’s Thesis was entitled “Small Intestine Submucosa Effects on Long-term Viability of Transplanted Pancreatic Cells.” He then attended the Philadelphia College of Osteopathic Medicine for Medical School.

Dr. Pregnar completed his Internship and Residency in Internal Medicine at Mercy Catholic Medical Center in Darby, Pa. He completed a Critical Care Fellowship at Inspira Health Network in Vineland, N.J., where he served as Chief Fellow. After completing his fellowship, he joined Sound Physicians as a staff intensivist, working at a number of hospitals in the Philadelphia Area. He now serves as the Medical Director of Critical Care at Nazareth Hospital. His research interests center around improving patient safety and outcomes.


Sonela Skenderi, DO, Cardiology

Sonela SkenderiDr. Skenderi received her doctorate degree from the Philadelphia College of Osteopathic Medicine, and completed a residency in internal medicine at Albert Einstein Medical Center in Philadelphia, Pa. She also completed a fellowship in cardiovascular disease at the University of Medicine and Dentistry of New Jersey School of Osteopathic Medicine in Stratford, N.J. Licensed in New Jersey and Pennsylvania, Dr. Skenderi is a Diplomate of American Board of Osteopathic Medicine in Internal Medicine and Cardiovascular Disease with Certification in Nuclear Medicine and Echocardiography. She is also a Fellow of the American College of Cardiology.