About
Ian D. Kleinhen, MD is a board-certified internist who has practiced in Connecticut for over 25 years. He earned his Bachelor of Science in Biology from Villanova University in 1991, then his Doctorate of Medicine from Georgetown University School of Medicine in 1995. He completed his internship and first residency year at Thomas Jefferson University Hospital in Philadelphia, then finished his Internal Medicine residency at the University of Connecticut in Farmington.
Dr. Kleinhen holds a Diplomate certification from the American Board of Internal Medicine. He also earned designation as a BaleDoneen Method Endorsed Provider, focusing on cardiovascular disease, type 2 diabetes, dementia, and kidney disease. He served as Medical Director at The Loomis Chaffee School from 1998 to 2022. He currently advises the Town of Windsor Health Department and sits on the Hartford Healthcare Integrated Care Partners board. Dr. Kleinhen views the doctor-patient relationship as a genuine partnership. He approaches each visit as a teacher and coach, helping patients use knowledge about their own health to make informed decisions. His work centers on the concept of "health span" — aligning a patient's healthier, disease-free years with their overall lifespan. Outside of medicine, he enjoys hiking, tennis, and the outdoors.
Education & Training
Undergraduate
Villanova University, B.S. Biology 1991
Medical School
Georgetown University School of Medicine, Doctorate of Medicine 1995
Residency
Internal Medicine, Thomas Jefferson University Hospital 1996-1997; Internal Medicine, University of Connecticut 1997-1998
Additional Training
Internship, Thomas Jefferson University Hospital, Philadelphia, PA 1995-1996
Certifications
Conditions Treated
Who is Dr. Kleinhen right for?
Dr. Kleinhen is a strong fit for adults who want a physician deeply invested in prevention and long-term wellness. Patients managing cardiovascular disease, type 2 diabetes, kidney disease, or dementia risk benefit from his BaleDoneen training. He works well with patients who want a genuine partnership — not just a prescription. Those who value after-hours access and unhurried appointments will find his practice especially well suited to their needs.
Similar Doctors Nearby
Dr. Paul GuardinoM.D.
hypertension, diabetes, cardiovascular disease +2 more
Dr. Barbara PadillaMD
cardiovascular disease, women's health conditions, obesity +2 more
Dr. Diana RodriguezMD
mental health, chronic disease, preventive care +1 more
Frequently Asked Questions
Dr. Kleinhen specializes in internal medicine with a particular focus on cardiovascular disease, type 2 diabetes, dementia, and kidney disease. His BaleDoneen Method training gives him a structured, evidence-based framework for addressing these chronic conditions. He also provides comprehensive preventive care and chronic condition management for adult patients.
The BaleDoneen Method is an evidence-based approach to identifying and managing the root causes of cardiovascular disease and related conditions including type 2 diabetes, dementia, and kidney disease. Dr. Kleinhen pursued endorsement as a BaleDoneen provider to give patients a more precise and proactive strategy for reducing serious long-term health risks.
Yes. Dr. Kleinhen holds certification as a Diplomate of the American Board of Internal Medicine. He has practiced as a board-certified internist in Connecticut for over 25 years.
Dr. Kleinhen earned his medical degree from Georgetown University School of Medicine in 1995. He trained as an intern and first-year resident at Thomas Jefferson University Hospital in Philadelphia, then completed his Internal Medicine residency at the University of Connecticut in Farmington.
Dr. Kleinhen treats the doctor-patient relationship as a true partnership. He takes on the role of teacher, educator, and coach, equipping patients with knowledge about their current health and preventive options. That foundation helps patients make more informed decisions and pursue their health goals with a clear plan.
Dr. Kleinhen centers his practice around the concept of health span — the number of healthier, disease-free years a person can experience. His goal is to help each patient align that span as closely as possible with their overall lifespan through prevention, early detection, and proactive care.
Dr. Kleinhen served as Medical Director at The Loomis Chaffee School from 1998 to 2022. He currently advises the Town of Windsor Health Department and serves as a board member for Hartford Healthcare Integrated Care Partners. He previously sat on the Hartford Healthcare Accountable Care Organization board as well.
Dr. Kleinhen holds affiliations at Hartford Hospital and St. Francis Hospital, both in the greater Hartford area of Connecticut.
Doctor profile last updated April 11, 2026