Dr. Diane Clausen, MD, is a distinguished Hematologist serving the East Setauket, NY area with over 35 years of experience in the field. She is board certified in Hematology and graduated from the esteemed Stony Brook University Renaissance School of Medicine. Dr. Clausen is affiliated with several reputable institutions, including Stony Brook University Hospital, Mather Hospital, Long Island Community Hospital, and St Charles Hospital. She practices primarily at her office in East Setauket, with additional locations in Stony Brook and Port Jefferson Station, NY, where she welcomes new patients with a range of insurance plans.

Dedicated to providing comprehensive and compassionate care, Dr. Clausen’s approach to medicine is patient-centered, focusing on the unique needs and concerns of each individual she treats. Her high patient satisfaction rating reflects her commitment to excellence and her ability to form lasting, trust-based relationships with her patients. Dr. Clausen’s extensive experience in Hematology allows her to address complex blood disorders with both expertise and empathy, ensuring her patients receive the highest standard of care.

Beyond her clinical practice, Dr. Clausen is deeply committed to the well-being of her community. Her affiliations with multiple hospitals support her mission to improve patient outcomes across the region, and her openness to accepting a variety of insurance plans underscores her dedication to accessible healthcare. Her longstanding presence in the East Setauket area has made her a trusted resource for her patients and a valued member of the medical community.