About
Dr. Joel Keenan is a board-certified internist who trained at Yale University School of Medicine and Greenwich Hospital, completing both his internship and internal medicine residency there from 2001 to 2004. During his residency, Yale honored him as Resident Teacher of the Year for 2003-2004. He earned his medical degree from the University of Vermont Medical School in 2001.
Dr. Keenan's educational background extends well beyond medicine. He graduated cum laude with a Bachelor of Arts in English from Tufts University in 1982 and later earned a Master of Education from Tufts University Graduate School in 1987. Most recently, he completed a Master of Applied Nutrition from the University of New England in 2024. That nutrition training directly informs his clinical philosophy: he believes whole, unprocessed food and daily exercise form the true foundation of long-term health. He is certified in the BaleDoneen Method for arterial wellness and cardiovascular and chronic disease prevention. He also gives talks in the community on food, exercise, and their roles in healing. Dr. Keenan holds hospital privileges at York Hospital and carries licensure in both Maine and New Hampshire. His wife Heidi runs the office, and their dog Q Tip is on hand to greet patients.
Education & Training
Undergraduate
Tufts University College of Arts and Sciences, B.A. English, Cum Laude, 1982
Medical School
University of Vermont Medical School, Doctorate of Medicine, 2001
Residency
Internal Medicine, Yale University School of Medicine / Greenwich Hospital, 2002-2004
Additional Training
Internship: Yale University School of Medicine / Greenwich Hospital, 2001-2002; Masters in Applied Nutrition, University of New England, 2021-2024; Masters in Education, Tufts University Graduate School, 1987
Certifications
Conditions Treated
Who is Dr. Keenan right for?
Dr. Keenan is a strong fit for adults who want a doctor deeply invested in nutrition and preventive care. Patients managing or trying to avoid cardiovascular disease, diabetes, or arterial conditions benefit from his BaleDoneen Method expertise. He works particularly well with patients ready to make real changes to diet and exercise habits. His calm, unhurried approach suits people who value a long-term relationship with their physician.
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Frequently Asked Questions
Dr. Keenan focuses on cardiovascular disease, arterial disease, diabetes, and chronic condition management. He also applies his nutrition training to help patients address root-cause factors behind many chronic illnesses. His BaleDoneen Method certification adds a specialized, evidence-based lens to arterial wellness and disease prevention.
Yes. Dr. Keenan holds board certification from the American Board of Internal Medicine. He also holds certification as a BaleDoneen Academy Member, which reflects advanced training in arterial wellness and cardiovascular risk reduction.
Dr. Keenan earned his medical degree from the University of Vermont Medical School in 2001. He then completed both his internship and internal medicine residency at Yale University School of Medicine and Greenwich Hospital, finishing in 2004. Yale named him Resident Teacher of the Year during his final year of residency.
Dr. Keenan centers his practice on the belief that food and exercise are the most powerful tools available for preventing and managing disease. He works with patients to build sustainable habits around whole, unprocessed foods and daily physical activity. He pairs that philosophy with comprehensive medical care and evidence-based diagnostics.
The BaleDoneen Method is an evidence-based approach to optimizing arterial wellness and reducing risk for cardiovascular disease, diabetes, and other chronic conditions. Dr. Keenan is a certified BaleDoneen Academy Member, which means he applies this structured methodology to evaluate and improve each patient's arterial health.
Yes. Dr. Keenan earned a Master of Applied Nutrition from the University of New England, completing the degree in 2024. He integrates that expertise directly into patient care, advising on diet as a clinical tool rather than a secondary concern.
Yes. Dr. Keenan holds licensure in both Maine and New Hampshire. He welcomes patients from Exeter through Kennebunkport and beyond, making his practice accessible to adults across the southern Maine and seacoast New Hampshire region.
Dr. Keenan describes his office as a peaceful and kind environment. Patients encounter minimal wait times and no paperwork to fill out on arrival. His wife Heidi manages the office, and their dog Q Tip is often there to greet patients who enjoy a friendly welcome.
Doctor profile last updated June 6, 2026