Family Medicine · Stony Brook Medicine
Family Medicine PhysicianClinical Assistant Professor, Renaissance School of Medicine at Stony Brook University
Innovative, evidence-based primary care, built on a lasting relationship with one physician who knows your history.
Book an Appointmentor call the office at (934) 213-6360
Philosophy of care
Dr. Dahl provides thorough, patient-centered care for individuals and families. The same physician follows your health from one year to the next, so each decision is made with your full history in view.
As a Doctor of Osteopathic Medicine, he is trained to weigh the whole person alongside the diagnosis: body, history and daily life.
Care plans begin with your goals, your circumstances and the current evidence, and they change as your life does.
Annual exams, screening and immunizations are planned deliberately, so problems are found early or avoided.
Plain-language explanations, time for your questions, and a practice that aims to respond promptly when you need care.
Clinical services
Family medicine for patients from school age through older adulthood, in one office in Holbrook.
Stay well
Scheduled care that keeps you ahead of illness.
Long term
Steady follow-up for conditions that need it, visit after visit.
When you are sick
Sick visits, with many results available during the appointment.
Whole person
Care that accounts for mind, body and stage of life, informed by osteopathic training and continuing study in integrative medicine.
Obstetric care is not provided; referrals are available. Full list of services
Credentials & training
Stony Brook Medicine · Holbrook, NY
Department of Family, Population and Preventive Medicine, Renaissance School of Medicine at Stony Brook University (voluntary faculty)
American Board of Family Medicine
Physician
Stony Brook Family Medicine Residency · Southampton, NY
Stony Brook Family Medicine Residency Program at Stony Brook Southampton Hospital
AAFP National Conference Scholarship Award, 2024
NYIT College of Osteopathic Medicine · Old Westbury, NY
Gold Humanism Honor Society · TOUCH Gold Award
Northeastern University · Boston, MA · Minor in Music
Tri Beta Biological Honor Society · Dean's List
Stony Brook Medicine
Renaissance School of Medicine at Stony Brook University
Preventive medicine and long-term management of chronic disease.
Integrative Medicine, Andrew Weil Center for Integrative Medicine, since 2024.
Point-of-Care Ultrasound, Stony Brook Medicine, since 2024.
Four peer-reviewed publications: Clinical Anatomy (2022, 2023), Nanomedicine Journal (2021) and International Journal of Nanomedicine (2018).
Earlier work in molecular genetics at Boston Children's Hospital / Harvard Medical School.
American Academy of Family Physicians · American College of Osteopathic Family Physicians · American Osteopathic Association
Biking, skiing, hiking, fitness, travel and music.