About
Alan D. Warrington, DO has practiced family medicine in Wilmington, Delaware for more than three decades. He earned his Bachelor of Science in Pre-Med from Penn State University in 1983 and his Doctor of Osteopathic Medicine from Philadelphia College of Osteopathic Medicine in 1987. He completed both his internship and his family practice residency at Riverside Hospital in Wilmington. Dr. Warrington holds certification from the American College of Osteopathic Family Physicians.
Dr. Warrington has served as a staff physician at Christiana Care Hospital since 1991. He also serves as Medical Director at Goldey Beacon College and Gilpin Hall Nursing Home. His career includes a long tenure as team doctor for the Wilmington Blue Rocks, a role he has held with both Kansas City Royals and Boston Red Sox affiliates. He has served as a pre-season screening physician for Kansas City Royals Minor League teams since 2010. Dr. Warrington also instructs students from the University of Delaware, Hahnemann Physician Assistant Program, and Philadelphia College of Osteopathic Medicine. His peers recognized him as one of Delaware's best family doctors through the Top Docs designation multiple times between 2003 and 2010. Readers named him the number one family physician in Delaware in 2005.
Education & Training
Undergraduate
Penn State University, B.S. Pre-Med, Middletown, PA (1983)
Medical School
Philadelphia College of Osteopathic Medicine, Philadelphia, PA - Doctor of Osteopathic Medicine (1987)
Residency
Family Practice, Riverside Hospital, Wilmington, DE (1988-1989)
Additional Training
Internship: Riverside Hospital, Wilmington, DE (1987-1988)
Certifications
Who is Dr. Warrington right for?
Dr. Warrington serves patients who want a long-term relationship with a single, experienced physician. Adults managing chronic conditions benefit from his thorough, preventive approach. Patients who value direct access to their doctor, including after-hours availability, will find his practice a strong fit. Those who appreciate a physician who takes time to educate them on their health respond particularly well to his style.
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Frequently Asked Questions
Dr. Warrington specializes in family medicine. He takes an osteopathic approach and holds certification from the American College of Osteopathic Family Physicians. His focus includes comprehensive preventive care, chronic disease management, and patient education.
Dr. Warrington has practiced family medicine in Wilmington since completing his residency at Riverside Hospital in 1989. He has served as a staff physician at Christiana Care Hospital since 1991, giving him more than three decades of clinical experience in the Wilmington community.
Dr. Warrington earned his medical degree from Philadelphia College of Osteopathic Medicine in Philadelphia. He completed his internship and family practice residency at Riverside Hospital in Wilmington, Delaware.
Yes. Dr. Warrington holds certification from the American College of Osteopathic Family Physicians. He earned his Doctor of Osteopathic Medicine degree from Philadelphia College of Osteopathic Medicine.
Yes. Dr. Warrington serves as a clinical instructor for student rotations through the University of Delaware, the Hahnemann Physician Assistant Program, and Philadelphia College of Osteopathic Medicine.
Dr. Warrington holds affiliations with Christiana Hospital and Christiana Care Health System - Wilmington Hospital. He has served as a staff physician in the Department of Family Practice at Christiana Care Hospital since 1991.
Dr. Warrington has served as Medical Director at Goldey Beacon College since 1992 and at Gilpin Hall Nursing Home since 1995. He has also served as team doctor for the Wilmington Blue Rocks baseball team and as a pre-season screening physician for Kansas City Royals Minor League teams since 2010.
8 out of 5 rating based on 20 reviews. Many patients describe him as a trusted, long-term physician who takes time with each visit and remains accessible outside regular office hours.
Doctor profile last updated April 11, 2026