Dr. William Sehee Jeong

Periodontist in Collegeville, PA

Dr. William Sehee Jeong is a periodontist trained at Temple University’s Kornberg School of Dentistry, where he developed advanced expertise in periodontal surgery and dental implant therapy. His clinical foundation is strengthened by extensive hospital-based training, including a General Practice Residency at Jacobi Medical Center—a Level 1 trauma center—where he gained experience managing complex surgical cases, infections, and medically compromised patients. He also completed a General Practice Residency at James J. Peters VA Medical Center, while simultaneously pursuing an Oral Surgery internship at Mount Sinai Hospital, further refining his surgical skillset in a highly regarded and competitive training environment.

Dr. Jeong is known for his thoughtful and meticulous approach. He combines surgical precision with a deep understanding of restorative and implant principles, allowing him to plan treatments that are both functional and natural-looking. He is committed to using evidence-based techniques and modern digital workflows to ensure predictable outcomes, while always prioritizing patient comfort and trust.  

What truly sets Dr. Jeong apart is his character. He is approachable, attentive, and genuinely invested in his patients’ well-being. He takes the time to listen, explain treatment options clearly, and make sure patients feel informed and confident in their care. His calm demeanor and strong communication skills help create a reassuring experience, even for those who may feel anxious about dental treatment.  

Outside of the office, Dr. Jeong enjoys spending time with his family, staying active in his church community, and relaxing with friends on the weekends. His values of faith, discipline, and meaningful relationships carry into his professional life, shaping the way he cares for each patient he meets.