About
Stephen Diamantoni, MD has practiced family medicine in Lancaster, PA for more than 40 years. He has cared for patients across every stage of life, from newborns to elderly adults. Over his career, he has delivered more than 2,000 babies and supported patients through hospitalizations and emergencies at all hours.
Dr. Diamantoni focuses on personalized, preventive care and manages chronic conditions including type 2 diabetes, high cholesterol, and hypertension. He gives patients direct access to his cellphone for after-hours concerns. He describes feeling blessed to be part of his patients' lives, a sentiment that reflects his deeply relationship-driven approach to medicine.
Conditions Treated
Who is Dr. Diamantoni right for?
Dr. Diamantoni is well suited for adults seeking a long-term relationship with an experienced family physician. Patients managing chronic conditions like type 2 diabetes, high cholesterol, or hypertension benefit from his preventive focus. He also serves patients who want direct physician access, including after-hours cellphone availability. Families across all age groups fit naturally into his practice given his career-long experience from infancy through old age.
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Frequently Asked Questions
Dr. Diamantoni specializes in family medicine with a strong focus on preventive care and chronic disease management. He regularly treats patients with type 2 diabetes, high cholesterol, and hypertension. His broad scope covers patients from infancy through old age.
Dr. Diamantoni has served the Lancaster, PA community as a family physician for more than 40 years. Over that time, he has delivered more than 2,000 babies and cared for patients through hospitalizations and emergencies.
Yes. Dr. Diamantoni gives patients direct access to his cellphone, including after hours and on weekends. He has built his practice around being available for emergencies of all types, day and night.
Yes. When you visit the office, you see Dr. Diamantoni directly, not a nurse practitioner or physician assistant. That dedicated access is a core part of how he practices medicine.
Dr. Diamantoni prioritizes prevention as the foundation of good health. He offers comprehensive health screenings and advanced diagnostic tests through the MDVIP Wellness Program. He uses those results to build a personalized wellness plan for each patient.
Yes. Dr. Diamantoni has cared for patients from infancy through old age throughout his 40-year career. He has delivered more than 2,000 babies and maintained long-term relationships with patients across every stage of life.
Dr. Diamantoni helps patients achieve better control of chronic conditions including type 2 diabetes, high cholesterol, and hypertension. His preventive approach and smaller practice size allow him to monitor these conditions closely over time.
Doctor profile last updated June 8, 2026