About
George P. D. D. PhD Program between 1985 and 1989. He then completed his residency and fellowship training in Family Medicine at the State University of New York at Stony Brook, finishing in 1993. The American Academy of Family Physicians Board re-certified him in 2016, and he holds Fellow status with that organization. Dr. Dempsey has held privileges at Southampton Hospital since 2002 and speaks English, French, and Spanish.
He serves as Medical Director of East Hampton Family Medicine. His clinical focus includes tick-borne disease, regenerative medicine, and individualized medicine. He has built 20 years of experience diagnosing and treating tick-borne illnesses, approaching each case with individualized treatment regimens. Since 2014, he has led the practice's collaboration with the Lyme Disease Biobank. The Bay Area Lyme Foundation recognized his research contributions, earning coverage in the East Hampton Star in 2021. Dr. Dempsey views family medicine as the only truly holistic model of care, examining every facet of a patient's life to guide long-term health decisions.
Education & Training
Medical School
Mayo Medical School, M.D. PhD Program (1985–1989)
Residency
Family Medicine, State University of New York at Stony Brook, Department of Family Medicine (1989–1993)
Fellowship
Family Medicine Fellowship, State University of New York at Stony Brook, Department of Family Medicine (completed 1993)
Certifications
Languages
English, French, Spanish
Conditions Treated
Who is Dr. Dempsey right for?
Dr. Dempsey is a strong fit for patients who want a long-term health partner rather than episodic care. Adults and families managing complex or chronic conditions benefit from his individualized approach. Patients concerned about tick-borne illnesses, including Lyme disease, will find deep clinical expertise here. His multilingual skills make him accessible to English, French, and Spanish speakers.
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Frequently Asked Questions
Dr. Dempsey focuses on tick-borne disease, regenerative medicine, and individualized preventive care. He has 20 years of experience diagnosing and treating Lyme disease and other tick-borne illnesses. He also manages chronic conditions including diabetes and cardiac concerns, with a whole-person approach to every case.
Yes. The American Academy of Family Physicians Board re-certified Dr. Dempsey in 2016. He also holds Fellow status with the American Academy of Family Physicians, recognizing his ongoing commitment to the field.
D. and PhD from Mayo Medical School between 1985 and 1989. He then completed his residency and fellowship in Family Medicine at the State University of New York at Stony Brook, finishing in 1993.
Yes, Lyme disease is one of Dr. Dempsey's primary clinical focuses. He has spent 20 years diagnosing and treating tick-borne illnesses. Since 2014, he has led the practice's research collaboration with the Lyme Disease Biobank through the Bay Area Lyme Foundation.
Dr. Dempsey speaks English, French, and Spanish, allowing him to serve a broader range of patients in the East Hampton community.
Dr. Dempsey serves as Medical Director of East Hampton Family Medicine. He leads the clinical team and oversees the practice's research partnership with the Lyme Disease Biobank. He also sets the practice's whole-person philosophy, approaching each visit as a step in a long-term health plan.
Yes. The Bay Area Lyme Foundation recognized Dr. Dempsey's contributions to tick-borne disease research. The East Hampton Star covered his work in 2021.
Doctor profile last updated March 21, 2026