About
Dr. Kathleen Haggerty is a board-certified internal medicine physician with 37 years of clinical experience. She earned her Bachelor of Arts in Biology from Wellesley College in 1981. She then completed her Doctorate of Medicine at The Medical College of Pennsylvania in Philadelphia in 1985. Her internship and residency in Internal Medicine both took place at the University of Miami/Jackson Memorial Hospital, finishing in 1988. She holds board certification from the American Board of Internal Medicine and earned the Sigma Xi honor.
Dr. Haggerty is passionate about chronic fatigue, fibromyalgia, diabetes, hypertension, and lung and heart health. She operated a long COVID-19 clinic and continues to see patients managing post-COVID conditions. She holds affiliations with Lakeland Regional Health Medical Center and Orlando Health Lakeland Highlands Hospital. Outside medicine, she enjoys kayaking, painting pottery, and caring for her three guinea pigs.
Education & Training
Undergraduate
Wellesley College, B.A. Biology, 1981
Medical School
The Medical College of Pennsylvania, Doctorate of Medicine, 1985
Residency
Internal Medicine, University of Miami/Jackson Memorial Hospital, 1986-1988
Additional Training
Internship, University of Miami/Jackson Memorial Hospital, Miami, FL, 1985-1986
Certifications
Conditions Treated
Who is Dr. Haggerty right for?
Dr. Haggerty is a strong fit for adults managing chronic or complex conditions. Patients with diabetes, hypertension, heart or lung concerns benefit from her deep clinical experience. She also serves patients dealing with chronic fatigue, fibromyalgia, or long COVID. Adults who want a primary care physician they can reach after hours will find her practice accessible and responsive.
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Frequently Asked Questions
Dr. Haggerty focuses on diabetes, high blood pressure, lung and heart conditions, chronic fatigue, and fibromyalgia. She also sees patients managing long COVID-19 and operated a dedicated long COVID clinic. With 37 years in internal medicine, she is experienced with most health concerns affecting adult patients.
Yes, Dr. Haggerty holds board certification from the American Board of Internal Medicine. She completed her residency training at the University of Miami/Jackson Memorial Hospital and has practiced internal medicine for 37 years.
Dr. Haggerty earned her medical degree from The Medical College of Pennsylvania in 1985. She completed both her internship and internal medicine residency at the University of Miami/Jackson Memorial Hospital between 1985 and 1988.
Yes, Dr. Haggerty treats patients with long COVID-19. She previously operated a long COVID clinic and continues to manage post-COVID concerns, including chronic fatigue symptoms that persist after infection.
Yes. Dr. Haggerty sees every patient personally. The practice does not route patients to nurse practitioners or physician assistants for office visits.
Yes. Dr. Haggerty refers patients to Watson Clinic and other specialists when the need arises. She also holds affiliations with Lakeland Regional Health Medical Center and Orlando Health Lakeland Highlands Hospital for patients who need additional care.
Dr. Haggerty is reachable by phone after hours and on weekends. This 24/7 physician access is a core part of her MDVIP-affiliated practice.
Dr. Haggerty sees adult patients from Lakeland and a wide surrounding area. She serves patients from Polk, Orange, Hillsborough, Pasco, Osceola, Lake Sumter, Hardee, and Lee counties in Florida.
Doctor profile last updated June 9, 2026