About Daniel Horn, MD

Daniel M. Horn, MD is the Director of Population Health for the Division of General Internal Medicine and an Associate Medical Director at the Massachusetts General Physician Organization. Dr. Horn is a primary care physician at Internal Medicine Associates, where he provides comprehensive preventive care, chronic disease management and urgent care to adult patients. Dr. Horn is board certified in Internal Medicine and is an instructor at Harvard Medical School. Dr. Horn is trained in various process improvement methodologies and is certified as an Improvement Advisor by the Institute for Healthcare Improvement.


Departments, Centers, & Programs:

Clinical Interests:




Internal Medicine Associates Team 1
15 Parkman Street
Boston, MA 02114-3117
Phone: 617-726-2374

Medical Education

  • MD, SUNY Downstate College of Medicine
  • Residency, Brigham and Women's Hospital

American Board Certifications

  • Internal Medicine, American Board of Internal Medicine

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.