2101 Aspen Dr.
Mechanicsburg, PA 17055


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Meet Our Doctors



Trevor J. McGerr,D.D.S.

Dr. Trevor J.  McGerr was born and raised in Lincoln, Nebraska.  He received his Doctor of Dental Surgery degree from the University of Nebraska Medical Center.  During his time in school, Dr. McGerr received a Health Professions scholarship from the United States Air Force.  Immediately after graduation, he started serving as a Captain in the Air Force.  Dr McGerr was stationed at Joint Base MDL in central New Jersey for three years, where he provided care  to all branches of the military.  He is a member of the American Dental Association, American Academy of General Dentistry, and the American Academy of Implant Dentistry. As a new resident of the Harrisburg area, he is looking forward to getting outdoors to do some backpacking and biking. In addition to reading about the latest in dental products, Dr McGerr is a tech and science news fanatic.  He recently joined the Harrisburg Young Professionals and will be involved in networking and volunteering in the community.



Charles R. Fields, D.D.S., M.A.G.D.

Dr. Fields graduated from Temple University School of Dentistry in 1983. Prior to this, he received a Bachelor of Science degree in Psychology and Biology from the University of Pittsburgh and attended Temple University School of Pharmacy.

After working two years as an associate dentist in a small practice, Dr. Fields established Fields Family Dentistry in April 1985. Founded on the basic principles of high-quality care and excellent patient relations, 30 years later, the practice continues to thrive.

Dr. Fields is certified with the National Board of Dental Examinations and North East Regional Board of Examinations. He is a Master in the Academy of General Dentistry and received the LLSR (Life Long Service Recognition) Award. In addition, Dr. Fields is a member of the American Dental Association, Pennsylvania Dental Association, Harrisburg Area Dental Society and the Academy of General Dentistry. He serves as Co-Chairman of the Advocacy Committee for the PAGD, Board of Directors for Clinicians Report Foundation and a CRA dental products evaluator for over 25 years.  Dr. Fields was the former dentist for the Harrisburg Heat Professional Soccer Team, Northern York School District and the Dental Assistant Advisor for Cumberland Perry Vo-Technical School. Dr. Fields was formerly affiliated with Health South Hospital, and Lifecare Rehabilitation Center.

Dr. Fields has been married to his high school sweetheart Vickie Ollinger Fields for 36 years. They have two daughters, Carissa Rae and Caylene Rochelle.



Alex Frisbie, D.M.D.

Dr. Frisbie grew up in the Pocono mountains near Scranton, Pennsylvania. He received both his Bachelor’s in Biology and Doctorate of Dental Medicine from the University of Pittsburgh, and was recognized with several awards upon graduation from Dental School.

Upon graduation, Dr. Frisbie had the opportunity to care for America’s Veterans at the VA Healthcare System in Pittsburgh, where he received advanced training in all aspects of general dentistry.

Dr. Frisbie is active in the American Dental Association and is working towards his fellowship Academy of General Dentistry. His practice philosophy is to “treat every patient the same way I would treat my mother, father, or brother.” Dr. Frisbie loves the small town communities that make up Pennsylvania, and enjoys spending time outdoors.



Diana Yousef, D.M.D.

Dr. Diana Yousef received her Doctor of Medicine in Dentistry and Master’s in biomedical science degrees from the Midwestern University in Glendale, AZ. Dr. Yousef is currently an active member of the American Dental Association, Academy of General Dentistry and Arizona Dental Association. She is committed to continuing education in order to remain current with state-of-the-art technology, procedures and materials in dentistry. Her mission is to provide comprehensive, compassionate care while ensuring that her patients are involved and having a comfortable experience. When she isn’t practicing dentistry, Dr. Yousef enjoys spending outdoor time with her husband and children. Her hobbies include baking, cooking and gardening.